./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:23:22,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:23:22,874 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:23:22,880 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:23:22,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:23:22,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:23:22,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:23:22,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:23:22,913 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:23:22,914 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:23:22,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:23:22,915 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:23:22,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:23:22,917 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:23:22,917 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:23:22,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:23:22,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:23:22,918 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:23:22,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:23:22,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:23:22,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:23:22,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:23:22,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:23:22,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:23:22,921 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:23:22,921 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:23:22,921 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:23:22,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:23:22,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:23:22,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:23:22,922 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:23:22,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:23:22,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:23:22,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:23:22,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:23:22,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:23:22,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:23:22,924 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:23:22,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:23:22,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:23:22,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:23:22,926 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:23:22,926 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:23:22,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:23:22,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2024-11-10 22:23:23,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:23:23,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:23:23,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:23:23,199 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:23:23,200 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:23:23,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2024-11-10 22:23:24,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:23:24,891 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:23:24,893 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2024-11-10 22:23:24,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f3b6595/694105f023764405998f3712bb8d3e23/FLAGa6912bfbd [2024-11-10 22:23:24,919 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66f3b6595/694105f023764405998f3712bb8d3e23 [2024-11-10 22:23:24,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:23:24,926 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:23:24,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:23:24,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:23:24,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:23:24,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74952bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:24, skipping insertion in model container [2024-11-10 22:23:24,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:23:24" (1/1) ... [2024-11-10 22:23:24,962 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:23:25,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:23:25,198 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:23:25,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:23:25,238 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:23:25,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25 WrapperNode [2024-11-10 22:23:25,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:23:25,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:23:25,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:23:25,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:23:25,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (1/1) ... [2024-11-10 22:23:25,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (1/1) ... [2024-11-10 22:23:25,280 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 202 [2024-11-10 22:23:25,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:23:25,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:23:25,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:23:25,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:23:25,315 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (1/1) ... [2024-11-10 22:23:25,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (1/1) ... [2024-11-10 22:23:25,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (1/1) ... [2024-11-10 22:23:25,367 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 9, 3]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 5, 1]. [2024-11-10 22:23:25,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (1/1) ... [2024-11-10 22:23:25,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (1/1) ... [2024-11-10 22:23:25,376 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (1/1) ... [2024-11-10 22:23:25,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (1/1) ... [2024-11-10 22:23:25,379 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (1/1) ... [2024-11-10 22:23:25,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (1/1) ... [2024-11-10 22:23:25,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:23:25,386 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:23:25,389 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:23:25,389 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:23:25,390 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (1/1) ... [2024-11-10 22:23:25,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:23:25,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:25,431 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:23:25,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:23:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 22:23:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 22:23:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 22:23:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:23:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:23:25,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:23:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:23:25,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:23:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:23:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:23:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 22:23:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 22:23:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 22:23:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 22:23:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:23:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:23:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 22:23:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:23:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:23:25,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:23:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:23:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:23:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 22:23:25,484 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:23:25,587 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:23:25,590 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:23:26,059 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:23:26,060 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:23:26,359 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:23:26,359 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:23:26,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:26 BoogieIcfgContainer [2024-11-10 22:23:26,360 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:23:26,362 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:23:26,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:23:26,367 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:23:26,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:23:24" (1/3) ... [2024-11-10 22:23:26,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e63ffa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:26, skipping insertion in model container [2024-11-10 22:23:26,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:23:25" (2/3) ... [2024-11-10 22:23:26,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e63ffa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:23:26, skipping insertion in model container [2024-11-10 22:23:26,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:23:26" (3/3) ... [2024-11-10 22:23:26,372 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2024-11-10 22:23:26,390 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:23:26,390 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-10 22:23:26,390 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:23:26,459 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 22:23:26,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 102 transitions, 218 flow [2024-11-10 22:23:26,552 INFO L124 PetriNetUnfolderBase]: 15/100 cut-off events. [2024-11-10 22:23:26,552 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 22:23:26,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 15/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 243 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2024-11-10 22:23:26,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 102 transitions, 218 flow [2024-11-10 22:23:26,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 99 transitions, 210 flow [2024-11-10 22:23:26,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:23:26,578 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;@5bc95744, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:23:26,579 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-10 22:23:26,582 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:23:26,582 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-10 22:23:26,582 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:23:26,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:26,583 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-10 22:23:26,583 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:26,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:26,587 INFO L85 PathProgramCache]: Analyzing trace with hash 699688, now seen corresponding path program 1 times [2024-11-10 22:23:26,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:26,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559050644] [2024-11-10 22:23:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:26,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 22:23:26,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412810693] [2024-11-10 22:23:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:26,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:26,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:26,718 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:23:26,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:23:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:26,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:26,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:26,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:26,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:23:26,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:26,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559050644] [2024-11-10 22:23:26,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 22:23:26,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412810693] [2024-11-10 22:23:26,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412810693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:26,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:26,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:26,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181847602] [2024-11-10 22:23:26,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:26,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:26,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:26,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:26,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:26,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-10 22:23:26,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:26,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:26,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-10 22:23:26,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:27,315 INFO L124 PetriNetUnfolderBase]: 226/613 cut-off events. [2024-11-10 22:23:27,317 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-10 22:23:27,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 613 events. 226/613 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3434 event pairs, 150 based on Foata normal form. 77/567 useless extension candidates. Maximal degree in co-relation 414. Up to 199 conditions per place. [2024-11-10 22:23:27,326 INFO L140 encePairwiseOnDemand]: 89/102 looper letters, 69 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-11-10 22:23:27,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 420 flow [2024-11-10 22:23:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:23:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:23:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 359 transitions. [2024-11-10 22:23:27,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703921568627451 [2024-11-10 22:23:27,345 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 210 flow. Second operand 5 states and 359 transitions. [2024-11-10 22:23:27,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 420 flow [2024-11-10 22:23:27,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 125 transitions, 404 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:23:27,354 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 199 flow [2024-11-10 22:23:27,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=90, PETRI_TRANSITIONS=91} [2024-11-10 22:23:27,361 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -1 predicate places. [2024-11-10 22:23:27,362 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 199 flow [2024-11-10 22:23:27,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:27,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:27,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:23:27,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:23:27,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-10 22:23:27,564 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:27,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:27,564 INFO L85 PathProgramCache]: Analyzing trace with hash 21691868, now seen corresponding path program 1 times [2024-11-10 22:23:27,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:27,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113760439] [2024-11-10 22:23:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:27,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 22:23:27,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679228976] [2024-11-10 22:23:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:27,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:27,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:27,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:23:27,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:23:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:27,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:23:27,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:27,729 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:23:27,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:27,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113760439] [2024-11-10 22:23:27,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 22:23:27,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679228976] [2024-11-10 22:23:27,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679228976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:27,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:27,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:27,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224350130] [2024-11-10 22:23:27,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:27,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:27,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:27,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:27,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:27,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-10 22:23:27,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:27,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:27,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-10 22:23:27,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:27,948 INFO L124 PetriNetUnfolderBase]: 226/603 cut-off events. [2024-11-10 22:23:27,949 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 22:23:27,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 603 events. 226/603 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3357 event pairs, 150 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 508. Up to 200 conditions per place. [2024-11-10 22:23:27,953 INFO L140 encePairwiseOnDemand]: 95/102 looper letters, 65 selfloop transitions, 4 changer transitions 1/122 dead transitions. [2024-11-10 22:23:27,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 405 flow [2024-11-10 22:23:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:23:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:23:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 343 transitions. [2024-11-10 22:23:27,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6725490196078432 [2024-11-10 22:23:27,957 INFO L175 Difference]: Start difference. First operand has 90 places, 91 transitions, 199 flow. Second operand 5 states and 343 transitions. [2024-11-10 22:23:27,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 405 flow [2024-11-10 22:23:27,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 122 transitions, 401 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:27,960 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 210 flow [2024-11-10 22:23:27,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2024-11-10 22:23:27,961 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2024-11-10 22:23:27,961 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 210 flow [2024-11-10 22:23:27,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:27,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:27,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 22:23:27,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:23:28,165 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,SelfDestructingSolverStorable1 [2024-11-10 22:23:28,166 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:28,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:28,167 INFO L85 PathProgramCache]: Analyzing trace with hash -629776655, now seen corresponding path program 1 times [2024-11-10 22:23:28,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:28,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721500364] [2024-11-10 22:23:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 22:23:28,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121423425] [2024-11-10 22:23:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:28,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:28,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:28,204 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:23:28,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:23:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:28,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:23:28,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:28,372 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:23:28,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721500364] [2024-11-10 22:23:28,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 22:23:28,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121423425] [2024-11-10 22:23:28,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121423425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:28,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:28,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:23:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911538561] [2024-11-10 22:23:28,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:28,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:28,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:28,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:28,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:28,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-10 22:23:28,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:28,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:28,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-10 22:23:28,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:28,734 INFO L124 PetriNetUnfolderBase]: 226/602 cut-off events. [2024-11-10 22:23:28,734 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-10 22:23:28,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 602 events. 226/602 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3343 event pairs, 150 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 509. Up to 198 conditions per place. [2024-11-10 22:23:28,739 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 64 selfloop transitions, 4 changer transitions 1/121 dead transitions. [2024-11-10 22:23:28,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 121 transitions, 410 flow [2024-11-10 22:23:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:23:28,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:23:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 340 transitions. [2024-11-10 22:23:28,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 22:23:28,743 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 210 flow. Second operand 5 states and 340 transitions. [2024-11-10 22:23:28,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 121 transitions, 410 flow [2024-11-10 22:23:28,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 121 transitions, 402 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:28,748 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 206 flow [2024-11-10 22:23:28,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-11-10 22:23:28,750 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2024-11-10 22:23:28,751 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 206 flow [2024-11-10 22:23:28,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:28,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:28,752 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:28,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:23:28,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:28,956 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:28,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:28,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1951760771, now seen corresponding path program 1 times [2024-11-10 22:23:28,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:28,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387551450] [2024-11-10 22:23:28,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:28,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 22:23:28,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [606071891] [2024-11-10 22:23:28,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:28,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:28,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:28,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:23:28,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:23:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:29,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:23:29,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:29,193 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:23:29,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:29,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387551450] [2024-11-10 22:23:29,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 22:23:29,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606071891] [2024-11-10 22:23:29,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606071891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:29,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:29,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:23:29,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51547208] [2024-11-10 22:23:29,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:29,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:23:29,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:29,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:23:29,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 22:23:29,436 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-10 22:23:29,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:29,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:29,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-10 22:23:29,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:29,680 INFO L124 PetriNetUnfolderBase]: 226/601 cut-off events. [2024-11-10 22:23:29,680 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 22:23:29,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 601 events. 226/601 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3338 event pairs, 150 based on Foata normal form. 1/484 useless extension candidates. Maximal degree in co-relation 510. Up to 196 conditions per place. [2024-11-10 22:23:29,685 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 63 selfloop transitions, 5 changer transitions 1/120 dead transitions. [2024-11-10 22:23:29,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 120 transitions, 406 flow [2024-11-10 22:23:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:29,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:29,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 388 transitions. [2024-11-10 22:23:29,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2024-11-10 22:23:29,687 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 206 flow. Second operand 6 states and 388 transitions. [2024-11-10 22:23:29,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 120 transitions, 406 flow [2024-11-10 22:23:29,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 120 transitions, 399 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:29,693 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 205 flow [2024-11-10 22:23:29,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2024-11-10 22:23:29,695 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2024-11-10 22:23:29,695 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 205 flow [2024-11-10 22:23:29,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:29,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:29,699 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:29,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 22:23:29,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:29,900 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:29,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:29,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1186565072, now seen corresponding path program 1 times [2024-11-10 22:23:29,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:29,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304468357] [2024-11-10 22:23:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:29,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:30,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:30,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304468357] [2024-11-10 22:23:30,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304468357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:30,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:30,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:30,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928579319] [2024-11-10 22:23:30,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:30,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:30,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:30,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:30,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:30,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-10 22:23:30,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:30,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:30,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-10 22:23:30,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:30,205 INFO L124 PetriNetUnfolderBase]: 232/637 cut-off events. [2024-11-10 22:23:30,205 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 22:23:30,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 637 events. 232/637 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3606 event pairs, 150 based on Foata normal form. 6/516 useless extension candidates. Maximal degree in co-relation 543. Up to 410 conditions per place. [2024-11-10 22:23:30,208 INFO L140 encePairwiseOnDemand]: 85/102 looper letters, 40 selfloop transitions, 11 changer transitions 0/98 dead transitions. [2024-11-10 22:23:30,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 325 flow [2024-11-10 22:23:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2024-11-10 22:23:30,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-11-10 22:23:30,210 INFO L175 Difference]: Start difference. First operand has 94 places, 89 transitions, 205 flow. Second operand 4 states and 268 transitions. [2024-11-10 22:23:30,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 325 flow [2024-11-10 22:23:30,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 98 transitions, 309 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-10 22:23:30,213 INFO L231 Difference]: Finished difference. Result has 95 places, 98 transitions, 281 flow [2024-11-10 22:23:30,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=95, PETRI_TRANSITIONS=98} [2024-11-10 22:23:30,214 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 4 predicate places. [2024-11-10 22:23:30,214 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 98 transitions, 281 flow [2024-11-10 22:23:30,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:30,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:30,215 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:30,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:23:30,215 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:30,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:30,216 INFO L85 PathProgramCache]: Analyzing trace with hash -175845077, now seen corresponding path program 1 times [2024-11-10 22:23:30,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:30,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388435771] [2024-11-10 22:23:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:30,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:30,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:30,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388435771] [2024-11-10 22:23:30,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388435771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:30,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615333873] [2024-11-10 22:23:30,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:30,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:30,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:30,343 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:23:30,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 22:23:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:30,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:30,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:30,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:23:30,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615333873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:30,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:23:30,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:23:30,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946178842] [2024-11-10 22:23:30,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:30,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:23:30,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:30,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:23:30,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:23:30,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-10 22:23:30,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 98 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:30,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:30,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-10 22:23:30,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:30,680 INFO L124 PetriNetUnfolderBase]: 232/631 cut-off events. [2024-11-10 22:23:30,680 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-10 22:23:30,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 631 events. 232/631 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3519 event pairs, 150 based on Foata normal form. 6/509 useless extension candidates. Maximal degree in co-relation 985. Up to 380 conditions per place. [2024-11-10 22:23:30,683 INFO L140 encePairwiseOnDemand]: 88/102 looper letters, 29 selfloop transitions, 19 changer transitions 0/95 dead transitions. [2024-11-10 22:23:30,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 365 flow [2024-11-10 22:23:30,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:30,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 368 transitions. [2024-11-10 22:23:30,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2024-11-10 22:23:30,686 INFO L175 Difference]: Start difference. First operand has 95 places, 98 transitions, 281 flow. Second operand 6 states and 368 transitions. [2024-11-10 22:23:30,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 365 flow [2024-11-10 22:23:30,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 95 transitions, 365 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:23:30,689 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 307 flow [2024-11-10 22:23:30,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2024-11-10 22:23:30,690 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 6 predicate places. [2024-11-10 22:23:30,691 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 307 flow [2024-11-10 22:23:30,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:30,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:30,692 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:30,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 22:23:30,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:30,898 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:30,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1156229502, now seen corresponding path program 1 times [2024-11-10 22:23:30,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:30,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365758245] [2024-11-10 22:23:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:30,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:30,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:30,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365758245] [2024-11-10 22:23:30,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365758245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:30,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129565520] [2024-11-10 22:23:30,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:30,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:30,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:30,997 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:23:30,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 22:23:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:31,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:31,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:31,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:31,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129565520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:31,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:31,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:23:31,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131348843] [2024-11-10 22:23:31,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:31,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:23:31,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:31,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:23:31,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:23:31,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-10 22:23:31,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 307 flow. Second operand has 12 states, 12 states have (on average 54.25) internal successors, (651), 12 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:31,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:31,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-10 22:23:31,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:31,471 INFO L124 PetriNetUnfolderBase]: 250/739 cut-off events. [2024-11-10 22:23:31,472 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-11-10 22:23:31,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 739 events. 250/739 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4487 event pairs, 150 based on Foata normal form. 18/635 useless extension candidates. Maximal degree in co-relation 993. Up to 416 conditions per place. [2024-11-10 22:23:31,476 INFO L140 encePairwiseOnDemand]: 88/102 looper letters, 37 selfloop transitions, 38 changer transitions 0/122 dead transitions. [2024-11-10 22:23:31,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 122 transitions, 625 flow [2024-11-10 22:23:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:23:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:23:31,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 613 transitions. [2024-11-10 22:23:31,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6009803921568627 [2024-11-10 22:23:31,478 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 307 flow. Second operand 10 states and 613 transitions. [2024-11-10 22:23:31,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 122 transitions, 625 flow [2024-11-10 22:23:31,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 122 transitions, 534 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-11-10 22:23:31,485 INFO L231 Difference]: Finished difference. Result has 104 places, 122 transitions, 512 flow [2024-11-10 22:23:31,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=512, PETRI_PLACES=104, PETRI_TRANSITIONS=122} [2024-11-10 22:23:31,486 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2024-11-10 22:23:31,486 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 122 transitions, 512 flow [2024-11-10 22:23:31,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.25) internal successors, (651), 12 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:31,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:31,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:31,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 22:23:31,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:31,688 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:31,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash 622223265, now seen corresponding path program 1 times [2024-11-10 22:23:31,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:31,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480795506] [2024-11-10 22:23:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:31,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:31,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:31,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480795506] [2024-11-10 22:23:31,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480795506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:31,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:31,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:23:31,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500620935] [2024-11-10 22:23:31,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:31,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:31,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:31,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:31,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:31,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 102 [2024-11-10 22:23:31,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 122 transitions, 512 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:31,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:31,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 102 [2024-11-10 22:23:31,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:32,013 INFO L124 PetriNetUnfolderBase]: 244/703 cut-off events. [2024-11-10 22:23:32,013 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2024-11-10 22:23:32,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 703 events. 244/703 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4169 event pairs, 150 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 1219. Up to 234 conditions per place. [2024-11-10 22:23:32,016 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 114 selfloop transitions, 9 changer transitions 1/172 dead transitions. [2024-11-10 22:23:32,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 172 transitions, 1020 flow [2024-11-10 22:23:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:23:32,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:23:32,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 340 transitions. [2024-11-10 22:23:32,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 22:23:32,018 INFO L175 Difference]: Start difference. First operand has 104 places, 122 transitions, 512 flow. Second operand 5 states and 340 transitions. [2024-11-10 22:23:32,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 172 transitions, 1020 flow [2024-11-10 22:23:32,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 172 transitions, 961 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:32,025 INFO L231 Difference]: Finished difference. Result has 108 places, 128 transitions, 549 flow [2024-11-10 22:23:32,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=549, PETRI_PLACES=108, PETRI_TRANSITIONS=128} [2024-11-10 22:23:32,027 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 17 predicate places. [2024-11-10 22:23:32,027 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 128 transitions, 549 flow [2024-11-10 22:23:32,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:32,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:32,028 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:32,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 22:23:32,028 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:32,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:32,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2000911521, now seen corresponding path program 1 times [2024-11-10 22:23:32,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:32,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040876563] [2024-11-10 22:23:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:32,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:32,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:32,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040876563] [2024-11-10 22:23:32,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040876563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:32,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:32,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:32,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544302980] [2024-11-10 22:23:32,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:32,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:32,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:32,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:32,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:32,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-11-10 22:23:32,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 128 transitions, 549 flow. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:32,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:32,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-11-10 22:23:32,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:32,297 INFO L124 PetriNetUnfolderBase]: 476/1185 cut-off events. [2024-11-10 22:23:32,298 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2024-11-10 22:23:32,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2228 conditions, 1185 events. 476/1185 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7558 event pairs, 234 based on Foata normal form. 32/1023 useless extension candidates. Maximal degree in co-relation 2062. Up to 645 conditions per place. [2024-11-10 22:23:32,304 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 101 selfloop transitions, 4 changer transitions 0/153 dead transitions. [2024-11-10 22:23:32,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 153 transitions, 811 flow [2024-11-10 22:23:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:32,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2024-11-10 22:23:32,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2024-11-10 22:23:32,305 INFO L175 Difference]: Start difference. First operand has 108 places, 128 transitions, 549 flow. Second operand 4 states and 292 transitions. [2024-11-10 22:23:32,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 153 transitions, 811 flow [2024-11-10 22:23:32,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 153 transitions, 806 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:32,309 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 573 flow [2024-11-10 22:23:32,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=573, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2024-11-10 22:23:32,310 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2024-11-10 22:23:32,310 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 573 flow [2024-11-10 22:23:32,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:32,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:32,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:32,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:23:32,311 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:32,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:32,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1516382380, now seen corresponding path program 1 times [2024-11-10 22:23:32,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:32,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705410810] [2024-11-10 22:23:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:32,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:32,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:32,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705410810] [2024-11-10 22:23:32,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705410810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:32,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:32,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:32,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6347816] [2024-11-10 22:23:32,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:32,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:32,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:32,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:32,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:32,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-11-10 22:23:32,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 573 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:32,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:32,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-11-10 22:23:32,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:32,547 INFO L124 PetriNetUnfolderBase]: 382/1016 cut-off events. [2024-11-10 22:23:32,548 INFO L125 PetriNetUnfolderBase]: For 786/834 co-relation queries the response was YES. [2024-11-10 22:23:32,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 1016 events. 382/1016 cut-off events. For 786/834 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6501 event pairs, 234 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 2078. Up to 639 conditions per place. [2024-11-10 22:23:32,553 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 83 selfloop transitions, 18 changer transitions 0/149 dead transitions. [2024-11-10 22:23:32,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 149 transitions, 881 flow [2024-11-10 22:23:32,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:32,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2024-11-10 22:23:32,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6691176470588235 [2024-11-10 22:23:32,555 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 573 flow. Second operand 4 states and 273 transitions. [2024-11-10 22:23:32,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 149 transitions, 881 flow [2024-11-10 22:23:32,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 149 transitions, 878 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:23:32,559 INFO L231 Difference]: Finished difference. Result has 115 places, 138 transitions, 678 flow [2024-11-10 22:23:32,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=678, PETRI_PLACES=115, PETRI_TRANSITIONS=138} [2024-11-10 22:23:32,560 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 24 predicate places. [2024-11-10 22:23:32,560 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 138 transitions, 678 flow [2024-11-10 22:23:32,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:32,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:32,561 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:32,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:23:32,561 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:32,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:32,562 INFO L85 PathProgramCache]: Analyzing trace with hash 662657985, now seen corresponding path program 1 times [2024-11-10 22:23:32,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:32,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106282009] [2024-11-10 22:23:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:32,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:32,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:32,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106282009] [2024-11-10 22:23:32,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106282009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:32,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:32,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:23:32,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665777971] [2024-11-10 22:23:32,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:32,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:32,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:32,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:32,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:32,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-10 22:23:32,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 138 transitions, 678 flow. Second operand has 5 states, 5 states have (on average 55.8) internal successors, (279), 5 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:32,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:32,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-10 22:23:32,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:32,856 INFO L124 PetriNetUnfolderBase]: 314/834 cut-off events. [2024-11-10 22:23:32,856 INFO L125 PetriNetUnfolderBase]: For 848/888 co-relation queries the response was YES. [2024-11-10 22:23:32,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1941 conditions, 834 events. 314/834 cut-off events. For 848/888 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4881 event pairs, 183 based on Foata normal form. 13/770 useless extension candidates. Maximal degree in co-relation 1793. Up to 418 conditions per place. [2024-11-10 22:23:32,860 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 130 selfloop transitions, 5 changer transitions 7/188 dead transitions. [2024-11-10 22:23:32,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 188 transitions, 1216 flow [2024-11-10 22:23:32,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:23:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:23:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 332 transitions. [2024-11-10 22:23:32,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6509803921568628 [2024-11-10 22:23:32,863 INFO L175 Difference]: Start difference. First operand has 115 places, 138 transitions, 678 flow. Second operand 5 states and 332 transitions. [2024-11-10 22:23:32,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 188 transitions, 1216 flow [2024-11-10 22:23:32,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 188 transitions, 1203 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:23:32,868 INFO L231 Difference]: Finished difference. Result has 120 places, 140 transitions, 690 flow [2024-11-10 22:23:32,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=690, PETRI_PLACES=120, PETRI_TRANSITIONS=140} [2024-11-10 22:23:32,869 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 29 predicate places. [2024-11-10 22:23:32,869 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 140 transitions, 690 flow [2024-11-10 22:23:32,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.8) internal successors, (279), 5 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:32,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:32,871 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:32,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 22:23:32,871 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:32,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash -79681861, now seen corresponding path program 1 times [2024-11-10 22:23:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:32,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80525160] [2024-11-10 22:23:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:32,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 22:23:32,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:32,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80525160] [2024-11-10 22:23:32,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80525160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:32,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:32,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:23:32,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490099888] [2024-11-10 22:23:32,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:32,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:32,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:33,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-11-10 22:23:33,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 140 transitions, 690 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:33,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:33,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-11-10 22:23:33,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:33,295 INFO L124 PetriNetUnfolderBase]: 382/1338 cut-off events. [2024-11-10 22:23:33,296 INFO L125 PetriNetUnfolderBase]: For 1268/1300 co-relation queries the response was YES. [2024-11-10 22:23:33,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 1338 events. 382/1338 cut-off events. For 1268/1300 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9330 event pairs, 197 based on Foata normal form. 24/1247 useless extension candidates. Maximal degree in co-relation 2723. Up to 505 conditions per place. [2024-11-10 22:23:33,302 INFO L140 encePairwiseOnDemand]: 88/102 looper letters, 147 selfloop transitions, 18 changer transitions 10/222 dead transitions. [2024-11-10 22:23:33,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 222 transitions, 1486 flow [2024-11-10 22:23:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:33,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:33,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2024-11-10 22:23:33,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7009803921568627 [2024-11-10 22:23:33,304 INFO L175 Difference]: Start difference. First operand has 120 places, 140 transitions, 690 flow. Second operand 6 states and 429 transitions. [2024-11-10 22:23:33,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 222 transitions, 1486 flow [2024-11-10 22:23:33,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 222 transitions, 1481 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:33,311 INFO L231 Difference]: Finished difference. Result has 127 places, 148 transitions, 806 flow [2024-11-10 22:23:33,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=806, PETRI_PLACES=127, PETRI_TRANSITIONS=148} [2024-11-10 22:23:33,312 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 36 predicate places. [2024-11-10 22:23:33,312 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 148 transitions, 806 flow [2024-11-10 22:23:33,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:33,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:33,313 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] [2024-11-10 22:23:33,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 22:23:33,313 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:33,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:33,313 INFO L85 PathProgramCache]: Analyzing trace with hash 49606796, now seen corresponding path program 1 times [2024-11-10 22:23:33,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:33,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288852348] [2024-11-10 22:23:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:33,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:33,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:33,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288852348] [2024-11-10 22:23:33,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288852348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:33,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:33,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:23:33,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953798599] [2024-11-10 22:23:33,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:33,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:33,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:33,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-10 22:23:33,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 148 transitions, 806 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:33,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:33,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-10 22:23:33,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:33,663 INFO L124 PetriNetUnfolderBase]: 379/1218 cut-off events. [2024-11-10 22:23:33,663 INFO L125 PetriNetUnfolderBase]: For 1879/1879 co-relation queries the response was YES. [2024-11-10 22:23:33,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3128 conditions, 1218 events. 379/1218 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7710 event pairs, 242 based on Foata normal form. 2/1153 useless extension candidates. Maximal degree in co-relation 2781. Up to 484 conditions per place. [2024-11-10 22:23:33,670 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 139 selfloop transitions, 9 changer transitions 6/203 dead transitions. [2024-11-10 22:23:33,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 203 transitions, 1481 flow [2024-11-10 22:23:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:23:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:23:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 336 transitions. [2024-11-10 22:23:33,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6588235294117647 [2024-11-10 22:23:33,673 INFO L175 Difference]: Start difference. First operand has 127 places, 148 transitions, 806 flow. Second operand 5 states and 336 transitions. [2024-11-10 22:23:33,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 203 transitions, 1481 flow [2024-11-10 22:23:33,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 203 transitions, 1481 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:23:33,683 INFO L231 Difference]: Finished difference. Result has 132 places, 147 transitions, 826 flow [2024-11-10 22:23:33,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=826, PETRI_PLACES=132, PETRI_TRANSITIONS=147} [2024-11-10 22:23:33,685 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 41 predicate places. [2024-11-10 22:23:33,685 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 147 transitions, 826 flow [2024-11-10 22:23:33,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:33,686 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:33,686 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:33,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-10 22:23:33,686 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:33,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:33,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1481066897, now seen corresponding path program 2 times [2024-11-10 22:23:33,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:33,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352130206] [2024-11-10 22:23:33,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:33,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:33,893 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:33,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:33,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352130206] [2024-11-10 22:23:33,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352130206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:33,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300819595] [2024-11-10 22:23:33,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:23:33,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:33,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:33,897 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:23:33,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 22:23:33,982 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:23:33,982 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:23:33,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 22:23:33,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:44,439 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post26#1| 1) .cse0)))) is different from true [2024-11-10 22:23:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 8 not checked. [2024-11-10 22:23:44,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:23:46,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300819595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:46,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:46,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 15 [2024-11-10 22:23:46,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292642225] [2024-11-10 22:23:46,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:46,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 22:23:46,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:46,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 22:23:46,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=146, Unknown=13, NotChecked=26, Total=240 [2024-11-10 22:23:46,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 102 [2024-11-10 22:23:46,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 147 transitions, 826 flow. Second operand has 16 states, 16 states have (on average 49.0) internal successors, (784), 16 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:46,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:46,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 102 [2024-11-10 22:23:46,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:53,448 INFO L124 PetriNetUnfolderBase]: 389/1452 cut-off events. [2024-11-10 22:23:53,448 INFO L125 PetriNetUnfolderBase]: For 1923/1943 co-relation queries the response was YES. [2024-11-10 22:23:53,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3592 conditions, 1452 events. 389/1452 cut-off events. For 1923/1943 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 10025 event pairs, 242 based on Foata normal form. 12/1345 useless extension candidates. Maximal degree in co-relation 3015. Up to 678 conditions per place. [2024-11-10 22:23:53,458 INFO L140 encePairwiseOnDemand]: 86/102 looper letters, 70 selfloop transitions, 75 changer transitions 0/186 dead transitions. [2024-11-10 22:23:53,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 186 transitions, 1272 flow [2024-11-10 22:23:53,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 22:23:53,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 22:23:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1250 transitions. [2024-11-10 22:23:53,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5106209150326797 [2024-11-10 22:23:53,463 INFO L175 Difference]: Start difference. First operand has 132 places, 147 transitions, 826 flow. Second operand 24 states and 1250 transitions. [2024-11-10 22:23:53,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 186 transitions, 1272 flow [2024-11-10 22:23:53,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 186 transitions, 1241 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-10 22:23:53,473 INFO L231 Difference]: Finished difference. Result has 153 places, 167 transitions, 1098 flow [2024-11-10 22:23:53,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1098, PETRI_PLACES=153, PETRI_TRANSITIONS=167} [2024-11-10 22:23:53,474 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 62 predicate places. [2024-11-10 22:23:53,474 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 167 transitions, 1098 flow [2024-11-10 22:23:53,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 49.0) internal successors, (784), 16 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:53,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:53,475 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:53,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 22:23:53,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:53,676 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:53,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:53,676 INFO L85 PathProgramCache]: Analyzing trace with hash -726758453, now seen corresponding path program 1 times [2024-11-10 22:23:53,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:53,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923665495] [2024-11-10 22:23:53,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:53,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:53,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:53,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923665495] [2024-11-10 22:23:53,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923665495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:53,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316343223] [2024-11-10 22:23:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:53,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:53,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:53,789 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:23:53,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 22:23:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:53,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:53,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:53,927 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:23:53,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316343223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:53,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:23:53,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-10 22:23:53,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031269339] [2024-11-10 22:23:53,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:53,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:23:53,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:53,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:23:53,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:23:53,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-11-10 22:23:53,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 167 transitions, 1098 flow. Second operand has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:53,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:53,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-11-10 22:23:53,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:54,192 INFO L124 PetriNetUnfolderBase]: 389/1416 cut-off events. [2024-11-10 22:23:54,192 INFO L125 PetriNetUnfolderBase]: For 2802/2822 co-relation queries the response was YES. [2024-11-10 22:23:54,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3671 conditions, 1416 events. 389/1416 cut-off events. For 2802/2822 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9687 event pairs, 242 based on Foata normal form. 2/1291 useless extension candidates. Maximal degree in co-relation 3422. Up to 667 conditions per place. [2024-11-10 22:23:54,202 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 93 selfloop transitions, 29 changer transitions 0/181 dead transitions. [2024-11-10 22:23:54,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 181 transitions, 1487 flow [2024-11-10 22:23:54,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:54,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:54,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 385 transitions. [2024-11-10 22:23:54,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6290849673202614 [2024-11-10 22:23:54,204 INFO L175 Difference]: Start difference. First operand has 153 places, 167 transitions, 1098 flow. Second operand 6 states and 385 transitions. [2024-11-10 22:23:54,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 181 transitions, 1487 flow [2024-11-10 22:23:54,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 181 transitions, 1319 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-11-10 22:23:54,216 INFO L231 Difference]: Finished difference. Result has 148 places, 166 transitions, 1013 flow [2024-11-10 22:23:54,216 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1013, PETRI_PLACES=148, PETRI_TRANSITIONS=166} [2024-11-10 22:23:54,217 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 57 predicate places. [2024-11-10 22:23:54,217 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 166 transitions, 1013 flow [2024-11-10 22:23:54,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:54,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:54,217 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] [2024-11-10 22:23:54,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 22:23:54,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-10 22:23:54,418 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:54,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:54,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1054674917, now seen corresponding path program 1 times [2024-11-10 22:23:54,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:54,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253452024] [2024-11-10 22:23:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:54,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:54,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:54,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253452024] [2024-11-10 22:23:54,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253452024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:54,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204193328] [2024-11-10 22:23:54,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:54,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:54,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:54,516 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:23:54,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 22:23:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:54,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:23:54,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:54,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:54,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204193328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:54,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:54,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:23:54,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498192220] [2024-11-10 22:23:54,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:54,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:23:54,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:54,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:23:54,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:23:54,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-11-10 22:23:54,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 166 transitions, 1013 flow. Second operand has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 12 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:54,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:54,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-11-10 22:23:54,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:55,099 INFO L124 PetriNetUnfolderBase]: 431/1674 cut-off events. [2024-11-10 22:23:55,100 INFO L125 PetriNetUnfolderBase]: For 3197/3217 co-relation queries the response was YES. [2024-11-10 22:23:55,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4430 conditions, 1674 events. 431/1674 cut-off events. For 3197/3217 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 11506 event pairs, 242 based on Foata normal form. 6/1555 useless extension candidates. Maximal degree in co-relation 4106. Up to 717 conditions per place. [2024-11-10 22:23:55,112 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 147 selfloop transitions, 47 changer transitions 0/253 dead transitions. [2024-11-10 22:23:55,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 253 transitions, 2148 flow [2024-11-10 22:23:55,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:23:55,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:23:55,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2024-11-10 22:23:55,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6205882352941177 [2024-11-10 22:23:55,115 INFO L175 Difference]: Start difference. First operand has 148 places, 166 transitions, 1013 flow. Second operand 10 states and 633 transitions. [2024-11-10 22:23:55,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 253 transitions, 2148 flow [2024-11-10 22:23:55,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 253 transitions, 2022 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-10 22:23:55,129 INFO L231 Difference]: Finished difference. Result has 156 places, 193 transitions, 1296 flow [2024-11-10 22:23:55,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1296, PETRI_PLACES=156, PETRI_TRANSITIONS=193} [2024-11-10 22:23:55,130 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 65 predicate places. [2024-11-10 22:23:55,130 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 193 transitions, 1296 flow [2024-11-10 22:23:55,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 12 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:55,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:55,131 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:55,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 22:23:55,331 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,SelfDestructingSolverStorable15 [2024-11-10 22:23:55,331 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:55,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1964670438, now seen corresponding path program 1 times [2024-11-10 22:23:55,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:55,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967215074] [2024-11-10 22:23:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:55,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:55,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:23:55,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:55,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967215074] [2024-11-10 22:23:55,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967215074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:23:55,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76836521] [2024-11-10 22:23:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:55,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:23:55,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:23:55,470 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:23:55,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 22:23:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:55,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:23:55,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:23:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:23:55,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:23:55,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:23:55,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76836521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:23:55,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:23:55,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-10 22:23:55,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761157383] [2024-11-10 22:23:55,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:23:55,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:23:55,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:55,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:23:55,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-10 22:23:55,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 102 [2024-11-10 22:23:55,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 193 transitions, 1296 flow. Second operand has 19 states, 19 states have (on average 49.21052631578947) internal successors, (935), 19 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:55,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:55,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 102 [2024-11-10 22:23:55,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:56,938 INFO L124 PetriNetUnfolderBase]: 827/2563 cut-off events. [2024-11-10 22:23:56,938 INFO L125 PetriNetUnfolderBase]: For 4368/4368 co-relation queries the response was YES. [2024-11-10 22:23:56,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7102 conditions, 2563 events. 827/2563 cut-off events. For 4368/4368 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 17802 event pairs, 138 based on Foata normal form. 48/2501 useless extension candidates. Maximal degree in co-relation 6648. Up to 619 conditions per place. [2024-11-10 22:23:56,959 INFO L140 encePairwiseOnDemand]: 84/102 looper letters, 296 selfloop transitions, 67 changer transitions 18/421 dead transitions. [2024-11-10 22:23:56,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 421 transitions, 3287 flow [2024-11-10 22:23:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 22:23:56,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 22:23:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1096 transitions. [2024-11-10 22:23:56,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5655314757481941 [2024-11-10 22:23:56,962 INFO L175 Difference]: Start difference. First operand has 156 places, 193 transitions, 1296 flow. Second operand 19 states and 1096 transitions. [2024-11-10 22:23:56,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 421 transitions, 3287 flow [2024-11-10 22:23:56,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 421 transitions, 3226 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-10 22:23:56,989 INFO L231 Difference]: Finished difference. Result has 175 places, 224 transitions, 1728 flow [2024-11-10 22:23:56,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1728, PETRI_PLACES=175, PETRI_TRANSITIONS=224} [2024-11-10 22:23:56,990 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 84 predicate places. [2024-11-10 22:23:56,991 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 224 transitions, 1728 flow [2024-11-10 22:23:56,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 49.21052631578947) internal successors, (935), 19 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:56,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:56,991 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:57,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 22:23:57,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-10 22:23:57,192 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:57,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:57,192 INFO L85 PathProgramCache]: Analyzing trace with hash 84689003, now seen corresponding path program 1 times [2024-11-10 22:23:57,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:57,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015770081] [2024-11-10 22:23:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:57,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:23:57,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:57,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015770081] [2024-11-10 22:23:57,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015770081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:57,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:57,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:23:57,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973825543] [2024-11-10 22:23:57,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:57,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:57,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:57,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:57,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:57,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-11-10 22:23:57,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 224 transitions, 1728 flow. Second operand has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:57,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:57,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-11-10 22:23:57,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:58,003 INFO L124 PetriNetUnfolderBase]: 990/3553 cut-off events. [2024-11-10 22:23:58,003 INFO L125 PetriNetUnfolderBase]: For 9922/9934 co-relation queries the response was YES. [2024-11-10 22:23:58,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10976 conditions, 3553 events. 990/3553 cut-off events. For 9922/9934 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 27779 event pairs, 528 based on Foata normal form. 34/3423 useless extension candidates. Maximal degree in co-relation 10312. Up to 1410 conditions per place. [2024-11-10 22:23:58,022 INFO L140 encePairwiseOnDemand]: 94/102 looper letters, 254 selfloop transitions, 23 changer transitions 1/325 dead transitions. [2024-11-10 22:23:58,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 325 transitions, 3117 flow [2024-11-10 22:23:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 411 transitions. [2024-11-10 22:23:58,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6715686274509803 [2024-11-10 22:23:58,024 INFO L175 Difference]: Start difference. First operand has 175 places, 224 transitions, 1728 flow. Second operand 6 states and 411 transitions. [2024-11-10 22:23:58,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 325 transitions, 3117 flow [2024-11-10 22:23:58,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 325 transitions, 3033 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-11-10 22:23:58,059 INFO L231 Difference]: Finished difference. Result has 180 places, 232 transitions, 1839 flow [2024-11-10 22:23:58,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1839, PETRI_PLACES=180, PETRI_TRANSITIONS=232} [2024-11-10 22:23:58,060 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 89 predicate places. [2024-11-10 22:23:58,060 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 232 transitions, 1839 flow [2024-11-10 22:23:58,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:58,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:58,061 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:58,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 22:23:58,061 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:58,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1826983649, now seen corresponding path program 1 times [2024-11-10 22:23:58,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:58,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786054] [2024-11-10 22:23:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:58,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 22:23:58,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:58,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786054] [2024-11-10 22:23:58,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:58,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:58,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 22:23:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066416321] [2024-11-10 22:23:58,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:58,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:23:58,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:58,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:23:58,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:23:58,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-11-10 22:23:58,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 232 transitions, 1839 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:58,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:58,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-11-10 22:23:58,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:58,796 INFO L124 PetriNetUnfolderBase]: 960/3454 cut-off events. [2024-11-10 22:23:58,797 INFO L125 PetriNetUnfolderBase]: For 9209/9252 co-relation queries the response was YES. [2024-11-10 22:23:58,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10388 conditions, 3454 events. 960/3454 cut-off events. For 9209/9252 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 27164 event pairs, 545 based on Foata normal form. 2/3223 useless extension candidates. Maximal degree in co-relation 9751. Up to 1655 conditions per place. [2024-11-10 22:23:58,817 INFO L140 encePairwiseOnDemand]: 89/102 looper letters, 228 selfloop transitions, 25 changer transitions 0/300 dead transitions. [2024-11-10 22:23:58,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 300 transitions, 2866 flow [2024-11-10 22:23:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:23:58,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:23:58,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 412 transitions. [2024-11-10 22:23:58,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.673202614379085 [2024-11-10 22:23:58,819 INFO L175 Difference]: Start difference. First operand has 180 places, 232 transitions, 1839 flow. Second operand 6 states and 412 transitions. [2024-11-10 22:23:58,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 300 transitions, 2866 flow [2024-11-10 22:23:58,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 300 transitions, 2857 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:23:58,856 INFO L231 Difference]: Finished difference. Result has 186 places, 233 transitions, 1904 flow [2024-11-10 22:23:58,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1904, PETRI_PLACES=186, PETRI_TRANSITIONS=233} [2024-11-10 22:23:58,857 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 95 predicate places. [2024-11-10 22:23:58,858 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 233 transitions, 1904 flow [2024-11-10 22:23:58,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:58,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:58,858 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:58,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 22:23:58,859 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:58,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:58,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1669608504, now seen corresponding path program 1 times [2024-11-10 22:23:58,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:58,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12735276] [2024-11-10 22:23:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:58,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:23:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:23:59,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:23:59,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12735276] [2024-11-10 22:23:59,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12735276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:23:59,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:23:59,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:23:59,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981758943] [2024-11-10 22:23:59,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:23:59,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:23:59,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:23:59,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:23:59,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:23:59,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 102 [2024-11-10 22:23:59,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 233 transitions, 1904 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:59,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:23:59,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 102 [2024-11-10 22:23:59,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:23:59,729 INFO L124 PetriNetUnfolderBase]: 1659/4955 cut-off events. [2024-11-10 22:23:59,730 INFO L125 PetriNetUnfolderBase]: For 11458/11484 co-relation queries the response was YES. [2024-11-10 22:23:59,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14009 conditions, 4955 events. 1659/4955 cut-off events. For 11458/11484 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 40206 event pairs, 748 based on Foata normal form. 124/4818 useless extension candidates. Maximal degree in co-relation 13401. Up to 2358 conditions per place. [2024-11-10 22:23:59,757 INFO L140 encePairwiseOnDemand]: 94/102 looper letters, 201 selfloop transitions, 7 changer transitions 0/272 dead transitions. [2024-11-10 22:23:59,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 272 transitions, 2520 flow [2024-11-10 22:23:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:23:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:23:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2024-11-10 22:23:59,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6911764705882353 [2024-11-10 22:23:59,759 INFO L175 Difference]: Start difference. First operand has 186 places, 233 transitions, 1904 flow. Second operand 4 states and 282 transitions. [2024-11-10 22:23:59,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 272 transitions, 2520 flow [2024-11-10 22:23:59,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 272 transitions, 2474 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 22:23:59,800 INFO L231 Difference]: Finished difference. Result has 187 places, 237 transitions, 1913 flow [2024-11-10 22:23:59,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1913, PETRI_PLACES=187, PETRI_TRANSITIONS=237} [2024-11-10 22:23:59,801 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 96 predicate places. [2024-11-10 22:23:59,801 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 237 transitions, 1913 flow [2024-11-10 22:23:59,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:23:59,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:23:59,802 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:23:59,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 22:23:59,802 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:23:59,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:23:59,803 INFO L85 PathProgramCache]: Analyzing trace with hash 748499772, now seen corresponding path program 1 times [2024-11-10 22:23:59,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:23:59,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077268257] [2024-11-10 22:23:59,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:23:59,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:23:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:24:00,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:00,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077268257] [2024-11-10 22:24:00,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077268257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:00,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233836809] [2024-11-10 22:24:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:00,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:00,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:00,081 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:00,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 22:24:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:00,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 22:24:00,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:24:00,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:24:00,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233836809] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:00,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:00,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-10 22:24:00,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550732340] [2024-11-10 22:24:00,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:00,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 22:24:00,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 22:24:00,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-10 22:24:00,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 102 [2024-11-10 22:24:00,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 237 transitions, 1913 flow. Second operand has 20 states, 20 states have (on average 51.4) internal successors, (1028), 20 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:00,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:00,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 102 [2024-11-10 22:24:00,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:01,592 INFO L124 PetriNetUnfolderBase]: 1410/4516 cut-off events. [2024-11-10 22:24:01,592 INFO L125 PetriNetUnfolderBase]: For 11768/11837 co-relation queries the response was YES. [2024-11-10 22:24:01,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13765 conditions, 4516 events. 1410/4516 cut-off events. For 11768/11837 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 37377 event pairs, 906 based on Foata normal form. 2/4282 useless extension candidates. Maximal degree in co-relation 13154. Up to 1233 conditions per place. [2024-11-10 22:24:01,625 INFO L140 encePairwiseOnDemand]: 87/102 looper letters, 91 selfloop transitions, 164 changer transitions 0/300 dead transitions. [2024-11-10 22:24:01,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 300 transitions, 2935 flow [2024-11-10 22:24:01,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 22:24:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 22:24:01,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 893 transitions. [2024-11-10 22:24:01,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5471813725490197 [2024-11-10 22:24:01,629 INFO L175 Difference]: Start difference. First operand has 187 places, 237 transitions, 1913 flow. Second operand 16 states and 893 transitions. [2024-11-10 22:24:01,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 300 transitions, 2935 flow [2024-11-10 22:24:01,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 300 transitions, 2927 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:01,761 INFO L231 Difference]: Finished difference. Result has 203 places, 268 transitions, 2631 flow [2024-11-10 22:24:01,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2631, PETRI_PLACES=203, PETRI_TRANSITIONS=268} [2024-11-10 22:24:01,764 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 112 predicate places. [2024-11-10 22:24:01,764 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 268 transitions, 2631 flow [2024-11-10 22:24:01,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.4) internal successors, (1028), 20 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:01,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:01,766 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:01,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 22:24:01,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-10 22:24:01,970 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:24:01,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:01,970 INFO L85 PathProgramCache]: Analyzing trace with hash -791493679, now seen corresponding path program 1 times [2024-11-10 22:24:01,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:01,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818903116] [2024-11-10 22:24:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:01,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:24:02,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:02,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818903116] [2024-11-10 22:24:02,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818903116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:02,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:02,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:24:02,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996477556] [2024-11-10 22:24:02,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:02,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:24:02,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:24:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:24:02,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-10 22:24:02,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 268 transitions, 2631 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:02,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:02,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-10 22:24:02,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:03,091 INFO L124 PetriNetUnfolderBase]: 2606/6906 cut-off events. [2024-11-10 22:24:03,092 INFO L125 PetriNetUnfolderBase]: For 17316/17486 co-relation queries the response was YES. [2024-11-10 22:24:03,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20418 conditions, 6906 events. 2606/6906 cut-off events. For 17316/17486 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 56887 event pairs, 1250 based on Foata normal form. 0/6468 useless extension candidates. Maximal degree in co-relation 19715. Up to 3376 conditions per place. [2024-11-10 22:24:03,154 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 231 selfloop transitions, 8 changer transitions 0/308 dead transitions. [2024-11-10 22:24:03,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 308 transitions, 3307 flow [2024-11-10 22:24:03,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:24:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:24:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2024-11-10 22:24:03,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6740196078431373 [2024-11-10 22:24:03,156 INFO L175 Difference]: Start difference. First operand has 203 places, 268 transitions, 2631 flow. Second operand 4 states and 275 transitions. [2024-11-10 22:24:03,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 308 transitions, 3307 flow [2024-11-10 22:24:03,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 308 transitions, 3139 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-11-10 22:24:03,220 INFO L231 Difference]: Finished difference. Result has 197 places, 272 transitions, 2516 flow [2024-11-10 22:24:03,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2516, PETRI_PLACES=197, PETRI_TRANSITIONS=272} [2024-11-10 22:24:03,221 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 106 predicate places. [2024-11-10 22:24:03,221 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 272 transitions, 2516 flow [2024-11-10 22:24:03,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:03,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:03,222 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:03,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 22:24:03,222 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:24:03,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:03,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1233500425, now seen corresponding path program 1 times [2024-11-10 22:24:03,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:03,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225402952] [2024-11-10 22:24:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:03,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:24:03,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:03,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225402952] [2024-11-10 22:24:03,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225402952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:03,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:03,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:24:03,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232629712] [2024-11-10 22:24:03,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:03,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:24:03,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:24:03,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:24:03,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-10 22:24:03,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 272 transitions, 2516 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:03,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:03,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-10 22:24:03,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:04,632 INFO L124 PetriNetUnfolderBase]: 2324/6484 cut-off events. [2024-11-10 22:24:04,632 INFO L125 PetriNetUnfolderBase]: For 16690/16808 co-relation queries the response was YES. [2024-11-10 22:24:04,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19739 conditions, 6484 events. 2324/6484 cut-off events. For 16690/16808 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 54177 event pairs, 1164 based on Foata normal form. 0/6195 useless extension candidates. Maximal degree in co-relation 19062. Up to 3214 conditions per place. [2024-11-10 22:24:04,665 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 227 selfloop transitions, 9 changer transitions 0/307 dead transitions. [2024-11-10 22:24:04,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 307 transitions, 3166 flow [2024-11-10 22:24:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:24:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:24:04,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2024-11-10 22:24:04,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-11-10 22:24:04,667 INFO L175 Difference]: Start difference. First operand has 197 places, 272 transitions, 2516 flow. Second operand 4 states and 276 transitions. [2024-11-10 22:24:04,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 307 transitions, 3166 flow [2024-11-10 22:24:04,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 307 transitions, 3159 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:04,726 INFO L231 Difference]: Finished difference. Result has 201 places, 274 transitions, 2550 flow [2024-11-10 22:24:04,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2509, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2550, PETRI_PLACES=201, PETRI_TRANSITIONS=274} [2024-11-10 22:24:04,727 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 110 predicate places. [2024-11-10 22:24:04,727 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 274 transitions, 2550 flow [2024-11-10 22:24:04,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:04,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:04,727 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:04,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-10 22:24:04,728 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:24:04,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:04,728 INFO L85 PathProgramCache]: Analyzing trace with hash -375395688, now seen corresponding path program 1 times [2024-11-10 22:24:04,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:04,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668550178] [2024-11-10 22:24:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:04,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:04,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:04,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668550178] [2024-11-10 22:24:04,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668550178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:04,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240384432] [2024-11-10 22:24:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:04,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:04,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:04,940 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:04,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 22:24:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:05,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 22:24:05,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:05,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:05,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240384432] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:05,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:05,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-10 22:24:05,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510109390] [2024-11-10 22:24:05,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:05,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-10 22:24:05,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:05,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-10 22:24:05,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-10 22:24:05,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-10 22:24:05,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 274 transitions, 2550 flow. Second operand has 28 states, 28 states have (on average 54.25) internal successors, (1519), 28 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:05,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:05,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-10 22:24:05,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:06,721 INFO L124 PetriNetUnfolderBase]: 1977/6574 cut-off events. [2024-11-10 22:24:06,722 INFO L125 PetriNetUnfolderBase]: For 31467/31545 co-relation queries the response was YES. [2024-11-10 22:24:06,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22925 conditions, 6574 events. 1977/6574 cut-off events. For 31467/31545 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 56231 event pairs, 1164 based on Foata normal form. 203/6587 useless extension candidates. Maximal degree in co-relation 21671. Up to 3122 conditions per place. [2024-11-10 22:24:06,763 INFO L140 encePairwiseOnDemand]: 89/102 looper letters, 76 selfloop transitions, 269 changer transitions 0/421 dead transitions. [2024-11-10 22:24:06,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 421 transitions, 5151 flow [2024-11-10 22:24:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-10 22:24:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-10 22:24:06,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1537 transitions. [2024-11-10 22:24:06,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5795625942684767 [2024-11-10 22:24:06,768 INFO L175 Difference]: Start difference. First operand has 201 places, 274 transitions, 2550 flow. Second operand 26 states and 1537 transitions. [2024-11-10 22:24:06,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 421 transitions, 5151 flow [2024-11-10 22:24:06,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 421 transitions, 5144 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:24:06,879 INFO L231 Difference]: Finished difference. Result has 232 places, 421 transitions, 5116 flow [2024-11-10 22:24:06,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5116, PETRI_PLACES=232, PETRI_TRANSITIONS=421} [2024-11-10 22:24:06,880 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 141 predicate places. [2024-11-10 22:24:06,880 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 421 transitions, 5116 flow [2024-11-10 22:24:06,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 54.25) internal successors, (1519), 28 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:06,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:06,881 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:06,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 22:24:07,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-10 22:24:07,086 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:24:07,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:07,087 INFO L85 PathProgramCache]: Analyzing trace with hash -416191726, now seen corresponding path program 1 times [2024-11-10 22:24:07,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:07,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273485288] [2024-11-10 22:24:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:07,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:24:07,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:07,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273485288] [2024-11-10 22:24:07,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273485288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:07,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:07,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:24:07,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25702007] [2024-11-10 22:24:07,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:07,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:24:07,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:07,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:24:07,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:24:07,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-11-10 22:24:07,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 421 transitions, 5116 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:07,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:07,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-11-10 22:24:07,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:08,475 INFO L124 PetriNetUnfolderBase]: 2165/7106 cut-off events. [2024-11-10 22:24:08,476 INFO L125 PetriNetUnfolderBase]: For 38408/38510 co-relation queries the response was YES. [2024-11-10 22:24:08,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25646 conditions, 7106 events. 2165/7106 cut-off events. For 38408/38510 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 60907 event pairs, 992 based on Foata normal form. 136/7114 useless extension candidates. Maximal degree in co-relation 24287. Up to 3541 conditions per place. [2024-11-10 22:24:08,521 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 369 selfloop transitions, 8 changer transitions 0/453 dead transitions. [2024-11-10 22:24:08,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 453 transitions, 6038 flow [2024-11-10 22:24:08,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:24:08,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:24:08,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 283 transitions. [2024-11-10 22:24:08,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6936274509803921 [2024-11-10 22:24:08,523 INFO L175 Difference]: Start difference. First operand has 232 places, 421 transitions, 5116 flow. Second operand 4 states and 283 transitions. [2024-11-10 22:24:08,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 453 transitions, 6038 flow [2024-11-10 22:24:08,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 453 transitions, 5152 flow, removed 306 selfloop flow, removed 13 redundant places. [2024-11-10 22:24:08,663 INFO L231 Difference]: Finished difference. Result has 224 places, 422 transitions, 4263 flow [2024-11-10 22:24:08,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=4230, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4263, PETRI_PLACES=224, PETRI_TRANSITIONS=422} [2024-11-10 22:24:08,663 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 133 predicate places. [2024-11-10 22:24:08,664 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 422 transitions, 4263 flow [2024-11-10 22:24:08,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:08,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:08,664 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:08,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-10 22:24:08,664 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:24:08,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:08,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1458800040, now seen corresponding path program 1 times [2024-11-10 22:24:08,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:08,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751979549] [2024-11-10 22:24:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:08,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:24:08,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:08,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751979549] [2024-11-10 22:24:08,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751979549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:08,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221878822] [2024-11-10 22:24:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:08,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:08,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:08,751 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:08,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 22:24:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:08,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 22:24:08,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:08,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:09,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221878822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:09,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:09,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 16 [2024-11-10 22:24:09,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669206188] [2024-11-10 22:24:09,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:09,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 22:24:09,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:09,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 22:24:09,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-10 22:24:09,404 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 102 [2024-11-10 22:24:09,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 422 transitions, 4263 flow. Second operand has 16 states, 16 states have (on average 51.625) internal successors, (826), 16 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:09,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:09,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 102 [2024-11-10 22:24:09,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:11,259 INFO L124 PetriNetUnfolderBase]: 3487/10508 cut-off events. [2024-11-10 22:24:11,260 INFO L125 PetriNetUnfolderBase]: For 37605/37781 co-relation queries the response was YES. [2024-11-10 22:24:11,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33862 conditions, 10508 events. 3487/10508 cut-off events. For 37605/37781 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 96020 event pairs, 355 based on Foata normal form. 136/10546 useless extension candidates. Maximal degree in co-relation 32512. Up to 1308 conditions per place. [2024-11-10 22:24:11,351 INFO L140 encePairwiseOnDemand]: 90/102 looper letters, 569 selfloop transitions, 80 changer transitions 0/719 dead transitions. [2024-11-10 22:24:11,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 719 transitions, 7891 flow [2024-11-10 22:24:11,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 22:24:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 22:24:11,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 973 transitions. [2024-11-10 22:24:11,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5611303344867359 [2024-11-10 22:24:11,354 INFO L175 Difference]: Start difference. First operand has 224 places, 422 transitions, 4263 flow. Second operand 17 states and 973 transitions. [2024-11-10 22:24:11,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 719 transitions, 7891 flow [2024-11-10 22:24:11,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 719 transitions, 7867 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 22:24:11,511 INFO L231 Difference]: Finished difference. Result has 237 places, 432 transitions, 4487 flow [2024-11-10 22:24:11,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=4247, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4487, PETRI_PLACES=237, PETRI_TRANSITIONS=432} [2024-11-10 22:24:11,512 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 146 predicate places. [2024-11-10 22:24:11,512 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 432 transitions, 4487 flow [2024-11-10 22:24:11,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 51.625) internal successors, (826), 16 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:11,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:11,513 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2024-11-10 22:24:11,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-10 22:24:11,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-10 22:24:11,714 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:24:11,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:11,714 INFO L85 PathProgramCache]: Analyzing trace with hash 886350026, now seen corresponding path program 1 times [2024-11-10 22:24:11,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:11,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236143412] [2024-11-10 22:24:11,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:11,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 22:24:11,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:11,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236143412] [2024-11-10 22:24:11,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236143412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:11,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755789166] [2024-11-10 22:24:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:11,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:11,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:11,821 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:11,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 22:24:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:11,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:24:11,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 22:24:11,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-10 22:24:12,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755789166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:12,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:12,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:24:12,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593778129] [2024-11-10 22:24:12,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:12,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:24:12,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:12,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:24:12,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:24:12,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-11-10 22:24:12,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 432 transitions, 4487 flow. Second operand has 12 states, 12 states have (on average 59.0) internal successors, (708), 12 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:12,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:12,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-11-10 22:24:12,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:14,363 INFO L124 PetriNetUnfolderBase]: 4292/12515 cut-off events. [2024-11-10 22:24:14,364 INFO L125 PetriNetUnfolderBase]: For 46574/46676 co-relation queries the response was YES. [2024-11-10 22:24:14,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41169 conditions, 12515 events. 4292/12515 cut-off events. For 46574/46676 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 116523 event pairs, 1227 based on Foata normal form. 306/12766 useless extension candidates. Maximal degree in co-relation 39549. Up to 4482 conditions per place. [2024-11-10 22:24:14,467 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 573 selfloop transitions, 19 changer transitions 0/673 dead transitions. [2024-11-10 22:24:14,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 673 transitions, 7900 flow [2024-11-10 22:24:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:24:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:24:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 709 transitions. [2024-11-10 22:24:14,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6950980392156862 [2024-11-10 22:24:14,469 INFO L175 Difference]: Start difference. First operand has 237 places, 432 transitions, 4487 flow. Second operand 10 states and 709 transitions. [2024-11-10 22:24:14,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 673 transitions, 7900 flow [2024-11-10 22:24:14,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 673 transitions, 7558 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-11-10 22:24:14,584 INFO L231 Difference]: Finished difference. Result has 244 places, 441 transitions, 4462 flow [2024-11-10 22:24:14,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=4361, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4462, PETRI_PLACES=244, PETRI_TRANSITIONS=441} [2024-11-10 22:24:14,584 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 153 predicate places. [2024-11-10 22:24:14,584 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 441 transitions, 4462 flow [2024-11-10 22:24:14,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 59.0) internal successors, (708), 12 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:14,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:14,585 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:14,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-10 22:24:14,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:14,786 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:24:14,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:14,786 INFO L85 PathProgramCache]: Analyzing trace with hash 477229148, now seen corresponding path program 1 times [2024-11-10 22:24:14,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:14,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336336345] [2024-11-10 22:24:14,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:14,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:14,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:24:14,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:14,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336336345] [2024-11-10 22:24:14,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336336345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:24:14,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:24:14,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 22:24:14,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724002397] [2024-11-10 22:24:14,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:14,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:24:14,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:14,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:24:14,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 22:24:14,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 102 [2024-11-10 22:24:14,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 441 transitions, 4462 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:14,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:14,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 102 [2024-11-10 22:24:14,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:17,527 INFO L124 PetriNetUnfolderBase]: 4609/13208 cut-off events. [2024-11-10 22:24:17,527 INFO L125 PetriNetUnfolderBase]: For 52208/52419 co-relation queries the response was YES. [2024-11-10 22:24:17,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44925 conditions, 13208 events. 4609/13208 cut-off events. For 52208/52419 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 124205 event pairs, 1894 based on Foata normal form. 208/13310 useless extension candidates. Maximal degree in co-relation 43307. Up to 4988 conditions per place. [2024-11-10 22:24:17,600 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 469 selfloop transitions, 7 changer transitions 11/560 dead transitions. [2024-11-10 22:24:17,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 560 transitions, 6541 flow [2024-11-10 22:24:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:24:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:24:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 335 transitions. [2024-11-10 22:24:17,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-11-10 22:24:17,602 INFO L175 Difference]: Start difference. First operand has 244 places, 441 transitions, 4462 flow. Second operand 5 states and 335 transitions. [2024-11-10 22:24:17,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 560 transitions, 6541 flow [2024-11-10 22:24:17,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 560 transitions, 6490 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-10 22:24:17,757 INFO L231 Difference]: Finished difference. Result has 246 places, 439 transitions, 4450 flow [2024-11-10 22:24:17,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=4430, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4450, PETRI_PLACES=246, PETRI_TRANSITIONS=439} [2024-11-10 22:24:17,758 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 155 predicate places. [2024-11-10 22:24:17,758 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 439 transitions, 4450 flow [2024-11-10 22:24:17,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:17,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:17,759 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:17,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-10 22:24:17,759 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:24:17,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:17,760 INFO L85 PathProgramCache]: Analyzing trace with hash -912092284, now seen corresponding path program 1 times [2024-11-10 22:24:17,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:17,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756017899] [2024-11-10 22:24:17,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:17,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 22:24:17,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:17,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756017899] [2024-11-10 22:24:17,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756017899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:17,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766007738] [2024-11-10 22:24:17,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:17,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:17,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:17,893 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:17,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 22:24:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:18,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 22:24:18,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:18,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:18,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766007738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:18,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:18,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-10 22:24:18,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288180652] [2024-11-10 22:24:18,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:18,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 22:24:18,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:18,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 22:24:18,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-10 22:24:19,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 102 [2024-11-10 22:24:19,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 439 transitions, 4450 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:19,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:19,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 102 [2024-11-10 22:24:19,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:24,108 INFO L124 PetriNetUnfolderBase]: 11509/25447 cut-off events. [2024-11-10 22:24:24,108 INFO L125 PetriNetUnfolderBase]: For 81254/81824 co-relation queries the response was YES. [2024-11-10 22:24:24,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87219 conditions, 25447 events. 11509/25447 cut-off events. For 81254/81824 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 226100 event pairs, 3671 based on Foata normal form. 276/25582 useless extension candidates. Maximal degree in co-relation 85305. Up to 5723 conditions per place. [2024-11-10 22:24:24,489 INFO L140 encePairwiseOnDemand]: 83/102 looper letters, 759 selfloop transitions, 186 changer transitions 0/985 dead transitions. [2024-11-10 22:24:24,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 985 transitions, 10711 flow [2024-11-10 22:24:24,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 22:24:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 22:24:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1140 transitions. [2024-11-10 22:24:24,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4859335038363171 [2024-11-10 22:24:24,492 INFO L175 Difference]: Start difference. First operand has 246 places, 439 transitions, 4450 flow. Second operand 23 states and 1140 transitions. [2024-11-10 22:24:24,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 985 transitions, 10711 flow [2024-11-10 22:24:24,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 985 transitions, 10687 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-10 22:24:24,830 INFO L231 Difference]: Finished difference. Result has 272 places, 516 transitions, 5914 flow [2024-11-10 22:24:24,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=4434, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5914, PETRI_PLACES=272, PETRI_TRANSITIONS=516} [2024-11-10 22:24:24,833 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 181 predicate places. [2024-11-10 22:24:24,833 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 516 transitions, 5914 flow [2024-11-10 22:24:24,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:24,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:24,834 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:24,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-10 22:24:25,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-10 22:24:25,035 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:24:25,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:25,035 INFO L85 PathProgramCache]: Analyzing trace with hash 467833114, now seen corresponding path program 2 times [2024-11-10 22:24:25,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:25,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945211863] [2024-11-10 22:24:25,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:25,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:25,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:25,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945211863] [2024-11-10 22:24:25,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945211863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:25,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889624930] [2024-11-10 22:24:25,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:24:25,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:25,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:25,328 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:25,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 22:24:25,461 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:24:25,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:24:25,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:24:25,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 22:24:25,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-10 22:24:25,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889624930] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:25,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:25,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-10 22:24:25,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725286315] [2024-11-10 22:24:25,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:25,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 22:24:25,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:25,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 22:24:25,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-10 22:24:25,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-10 22:24:25,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 516 transitions, 5914 flow. Second operand has 15 states, 15 states have (on average 56.2) internal successors, (843), 15 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:25,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:25,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-10 22:24:25,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:29,687 INFO L124 PetriNetUnfolderBase]: 6957/21055 cut-off events. [2024-11-10 22:24:29,687 INFO L125 PetriNetUnfolderBase]: For 95733/96019 co-relation queries the response was YES. [2024-11-10 22:24:29,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75724 conditions, 21055 events. 6957/21055 cut-off events. For 95733/96019 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 212545 event pairs, 4647 based on Foata normal form. 18/20797 useless extension candidates. Maximal degree in co-relation 73697. Up to 10108 conditions per place. [2024-11-10 22:24:29,850 INFO L140 encePairwiseOnDemand]: 95/102 looper letters, 779 selfloop transitions, 209 changer transitions 0/1078 dead transitions. [2024-11-10 22:24:29,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 1078 transitions, 15795 flow [2024-11-10 22:24:29,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 22:24:29,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 22:24:29,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 886 transitions. [2024-11-10 22:24:29,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5790849673202615 [2024-11-10 22:24:29,852 INFO L175 Difference]: Start difference. First operand has 272 places, 516 transitions, 5914 flow. Second operand 15 states and 886 transitions. [2024-11-10 22:24:29,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 1078 transitions, 15795 flow [2024-11-10 22:24:30,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 1078 transitions, 15611 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-11-10 22:24:30,359 INFO L231 Difference]: Finished difference. Result has 279 places, 554 transitions, 6731 flow [2024-11-10 22:24:30,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=5722, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6731, PETRI_PLACES=279, PETRI_TRANSITIONS=554} [2024-11-10 22:24:30,360 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 188 predicate places. [2024-11-10 22:24:30,360 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 554 transitions, 6731 flow [2024-11-10 22:24:30,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 56.2) internal successors, (843), 15 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:30,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:30,360 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-10 22:24:30,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-10 22:24:30,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:30,561 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:24:30,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:30,562 INFO L85 PathProgramCache]: Analyzing trace with hash 471106877, now seen corresponding path program 1 times [2024-11-10 22:24:30,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:30,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292515616] [2024-11-10 22:24:30,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:30,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-10 22:24:30,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:30,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292515616] [2024-11-10 22:24:30,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292515616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:30,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381742574] [2024-11-10 22:24:30,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:30,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:30,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:30,643 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:30,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-10 22:24:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:30,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:24:30,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-10 22:24:30,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-10 22:24:30,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381742574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:24:30,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:24:30,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 22:24:30,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357354876] [2024-11-10 22:24:30,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:24:30,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:24:30,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:30,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:24:30,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:24:30,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 102 [2024-11-10 22:24:30,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 554 transitions, 6731 flow. Second operand has 12 states, 12 states have (on average 57.583333333333336) internal successors, (691), 12 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:30,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:30,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 102 [2024-11-10 22:24:30,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:38,277 INFO L124 PetriNetUnfolderBase]: 14878/39290 cut-off events. [2024-11-10 22:24:38,277 INFO L125 PetriNetUnfolderBase]: For 135678/136300 co-relation queries the response was YES. [2024-11-10 22:24:38,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133390 conditions, 39290 events. 14878/39290 cut-off events. For 135678/136300 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 394930 event pairs, 2656 based on Foata normal form. 414/39643 useless extension candidates. Maximal degree in co-relation 131342. Up to 8373 conditions per place. [2024-11-10 22:24:38,780 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 701 selfloop transitions, 38 changer transitions 0/826 dead transitions. [2024-11-10 22:24:38,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 826 transitions, 10159 flow [2024-11-10 22:24:38,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:24:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:24:38,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 673 transitions. [2024-11-10 22:24:38,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6598039215686274 [2024-11-10 22:24:38,782 INFO L175 Difference]: Start difference. First operand has 279 places, 554 transitions, 6731 flow. Second operand 10 states and 673 transitions. [2024-11-10 22:24:38,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 826 transitions, 10159 flow [2024-11-10 22:24:39,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 826 transitions, 9598 flow, removed 69 selfloop flow, removed 11 redundant places. [2024-11-10 22:24:39,274 INFO L231 Difference]: Finished difference. Result has 280 places, 575 transitions, 6485 flow [2024-11-10 22:24:39,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=6170, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6485, PETRI_PLACES=280, PETRI_TRANSITIONS=575} [2024-11-10 22:24:39,275 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 189 predicate places. [2024-11-10 22:24:39,275 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 575 transitions, 6485 flow [2024-11-10 22:24:39,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 57.583333333333336) internal successors, (691), 12 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:39,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:24:39,275 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:24:39,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-10 22:24:39,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:39,476 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-10 22:24:39,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:24:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash 347342098, now seen corresponding path program 1 times [2024-11-10 22:24:39,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:24:39,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945198206] [2024-11-10 22:24:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:39,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:24:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:39,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:24:39,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945198206] [2024-11-10 22:24:39,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945198206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:39,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900234418] [2024-11-10 22:24:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:24:39,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:24:39,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:24:39,585 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:24:39,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-10 22:24:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:24:39,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:24:39,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:24:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:39,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:24:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:24:39,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900234418] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 22:24:39,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 22:24:39,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2024-11-10 22:24:39,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321315195] [2024-11-10 22:24:39,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:24:39,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 22:24:39,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:24:39,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 22:24:39,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-10 22:24:39,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 102 [2024-11-10 22:24:39,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 575 transitions, 6485 flow. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:24:39,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:24:39,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 102 [2024-11-10 22:24:39,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:24:47,484 INFO L124 PetriNetUnfolderBase]: 13785/38635 cut-off events. [2024-11-10 22:24:47,484 INFO L125 PetriNetUnfolderBase]: For 138960/139499 co-relation queries the response was YES.