./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:06:14,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:06:14,897 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:06:14,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:06:14,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:06:14,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:06:14,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:06:14,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:06:14,927 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:06:14,927 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:06:14,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:06:14,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:06:14,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:06:14,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:06:14,929 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:06:14,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:06:14,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:06:14,930 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:06:14,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:06:14,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:06:14,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:06:14,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:06:14,935 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:06:14,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:06:14,936 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:06:14,937 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:06:14,937 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:06:14,937 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:06:14,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:06:14,938 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:06:14,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:06:14,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:06:14,939 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:06:14,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:06:14,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:06:14,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:06:14,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:06:14,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:06:14,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:06:14,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:06:14,941 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:06:14,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:06:14,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:06:14,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:06:14,943 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 [2024-10-12 00:06:15,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:06:15,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:06:15,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:06:15,267 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:06:15,267 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:06:15,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-10-12 00:06:16,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:06:16,948 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:06:16,949 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-10-12 00:06:16,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f4a7ad4ee/ff0b572ab152421e95bd2eb7ebfc2f18/FLAGbf090f53c [2024-10-12 00:06:17,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f4a7ad4ee/ff0b572ab152421e95bd2eb7ebfc2f18 [2024-10-12 00:06:17,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:06:17,326 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:06:17,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:06:17,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:06:17,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:06:17,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c66f8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17, skipping insertion in model container [2024-10-12 00:06:17,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,370 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:06:17,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:06:17,590 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:06:17,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:06:17,645 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:06:17,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17 WrapperNode [2024-10-12 00:06:17,646 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:06:17,647 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:06:17,647 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:06:17,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:06:17,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,694 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 162 [2024-10-12 00:06:17,695 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:06:17,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:06:17,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:06:17,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:06:17,709 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,717 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,742 INFO L175 MemorySlicer]: Split 15 memory accesses to 2 slices as follows [2, 13]. 87 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-12 00:06:17,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,765 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:06:17,775 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:06:17,776 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:06:17,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:06:17,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (1/1) ... [2024-10-12 00:06:17,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:06:17,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:17,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:06:17,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:06:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:06:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:06:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:06:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:06:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:06:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:06:17,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:06:17,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:06:17,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:06:17,881 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:06:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:06:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-12 00:06:17,882 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-12 00:06:17,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:06:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:06:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-10-12 00:06:17,883 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-10-12 00:06:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:06:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:06:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:06:17,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:06:17,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:06:17,887 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:06:18,046 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:06:18,048 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:06:18,476 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:06:18,477 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:06:18,787 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:06:18,788 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-12 00:06:18,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:06:18 BoogieIcfgContainer [2024-10-12 00:06:18,788 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:06:18,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:06:18,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:06:18,794 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:06:18,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:06:17" (1/3) ... [2024-10-12 00:06:18,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375baeae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:06:18, skipping insertion in model container [2024-10-12 00:06:18,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:06:17" (2/3) ... [2024-10-12 00:06:18,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375baeae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:06:18, skipping insertion in model container [2024-10-12 00:06:18,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:06:18" (3/3) ... [2024-10-12 00:06:18,798 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-10-12 00:06:18,812 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:06:18,813 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-12 00:06:18,813 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:06:18,902 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-10-12 00:06:18,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 79 transitions, 193 flow [2024-10-12 00:06:18,995 INFO L124 PetriNetUnfolderBase]: 5/74 cut-off events. [2024-10-12 00:06:18,996 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-12 00:06:19,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 74 events. 5/74 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 235 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-10-12 00:06:19,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 79 transitions, 193 flow [2024-10-12 00:06:19,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 72 transitions, 171 flow [2024-10-12 00:06:19,023 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:06:19,032 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;@4a456464, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:06:19,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2024-10-12 00:06:19,038 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:06:19,039 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:06:19,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:06:19,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:19,041 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:06:19,041 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-12 00:06:19,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:19,047 INFO L85 PathProgramCache]: Analyzing trace with hash 625751, now seen corresponding path program 1 times [2024-10-12 00:06:19,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:19,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597476956] [2024-10-12 00:06:19,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:19,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:19,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:19,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597476956] [2024-10-12 00:06:19,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597476956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:19,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:19,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:06:19,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781429363] [2024-10-12 00:06:19,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:19,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:19,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:19,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:19,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:19,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-12 00:06:19,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2024-10-12 00:06:19,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:19,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-12 00:06:19,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:24,630 INFO L124 PetriNetUnfolderBase]: 32005/40621 cut-off events. [2024-10-12 00:06:24,631 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2024-10-12 00:06:24,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82004 conditions, 40621 events. 32005/40621 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 236056 event pairs, 23773 based on Foata normal form. 1/35759 useless extension candidates. Maximal degree in co-relation 75525. Up to 39189 conditions per place. [2024-10-12 00:06:25,133 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 40 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-10-12 00:06:25,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 72 transitions, 259 flow [2024-10-12 00:06:25,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:25,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2024-10-12 00:06:25,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5727848101265823 [2024-10-12 00:06:25,152 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 171 flow. Second operand 4 states and 181 transitions. [2024-10-12 00:06:25,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 72 transitions, 259 flow [2024-10-12 00:06:25,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 242 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-10-12 00:06:25,363 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 177 flow [2024-10-12 00:06:25,369 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2024-10-12 00:06:25,373 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -7 predicate places. [2024-10-12 00:06:25,374 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 177 flow [2024-10-12 00:06:25,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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) [2024-10-12 00:06:25,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:25,375 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:06:25,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:06:25,376 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-12 00:06:25,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:25,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1462517101, now seen corresponding path program 1 times [2024-10-12 00:06:25,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:25,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053598984] [2024-10-12 00:06:25,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:25,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:25,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:25,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053598984] [2024-10-12 00:06:25,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053598984] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:25,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:25,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:06:25,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693788615] [2024-10-12 00:06:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:25,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:06:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:25,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:06:25,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:06:25,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-12 00:06:25,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2024-10-12 00:06:25,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:25,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-12 00:06:25,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:29,013 INFO L124 PetriNetUnfolderBase]: 32005/40620 cut-off events. [2024-10-12 00:06:29,014 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-10-12 00:06:29,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81231 conditions, 40620 events. 32005/40620 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 235862 event pairs, 23773 based on Foata normal form. 1/35759 useless extension candidates. Maximal degree in co-relation 81204. Up to 39184 conditions per place. [2024-10-12 00:06:29,528 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 36 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2024-10-12 00:06:29,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 259 flow [2024-10-12 00:06:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:06:29,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:06:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 242 transitions. [2024-10-12 00:06:29,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.510548523206751 [2024-10-12 00:06:29,532 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 177 flow. Second operand 6 states and 242 transitions. [2024-10-12 00:06:29,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 259 flow [2024-10-12 00:06:29,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 71 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:29,535 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 184 flow [2024-10-12 00:06:29,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-10-12 00:06:29,536 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2024-10-12 00:06:29,536 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 184 flow [2024-10-12 00:06:29,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 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) [2024-10-12 00:06:29,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:29,537 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:06:29,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:06:29,537 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-12 00:06:29,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:29,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1906609483, now seen corresponding path program 1 times [2024-10-12 00:06:29,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:29,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986123489] [2024-10-12 00:06:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:29,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:29,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:29,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986123489] [2024-10-12 00:06:29,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986123489] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:29,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207932918] [2024-10-12 00:06:29,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:29,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:29,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:29,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:29,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 00:06:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:29,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:06:29,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:29,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:29,823 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:29,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207932918] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:29,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:29,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-10-12 00:06:29,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916868718] [2024-10-12 00:06:29,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:29,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 00:06:29,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:29,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 00:06:29,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:06:29,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 79 [2024-10-12 00:06:29,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 184 flow. Second operand has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 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) [2024-10-12 00:06:29,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:29,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 79 [2024-10-12 00:06:29,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:33,010 INFO L124 PetriNetUnfolderBase]: 32008/40632 cut-off events. [2024-10-12 00:06:33,010 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-10-12 00:06:33,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81275 conditions, 40632 events. 32008/40632 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 236308 event pairs, 23773 based on Foata normal form. 3/35771 useless extension candidates. Maximal degree in co-relation 81205. Up to 39191 conditions per place. [2024-10-12 00:06:33,319 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 39 selfloop transitions, 13 changer transitions 0/80 dead transitions. [2024-10-12 00:06:33,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 80 transitions, 342 flow [2024-10-12 00:06:33,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:06:33,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:06:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 385 transitions. [2024-10-12 00:06:33,322 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4873417721518987 [2024-10-12 00:06:33,323 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 184 flow. Second operand 10 states and 385 transitions. [2024-10-12 00:06:33,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 80 transitions, 342 flow [2024-10-12 00:06:33,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 296 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-10-12 00:06:33,326 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 236 flow [2024-10-12 00:06:33,326 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=236, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2024-10-12 00:06:33,327 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2024-10-12 00:06:33,328 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 236 flow [2024-10-12 00:06:33,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.0) internal successors, (340), 10 states have internal predecessors, (340), 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) [2024-10-12 00:06:33,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:33,329 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:33,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:06:33,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:33,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-12 00:06:33,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:33,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1343238740, now seen corresponding path program 1 times [2024-10-12 00:06:33,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:33,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049897879] [2024-10-12 00:06:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:33,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:33,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:33,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049897879] [2024-10-12 00:06:33,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049897879] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:33,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:33,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:06:33,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465070867] [2024-10-12 00:06:33,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:33,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:06:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:33,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:06:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:06:33,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2024-10-12 00:06:33,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-10-12 00:06:33,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:33,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2024-10-12 00:06:33,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:36,610 INFO L124 PetriNetUnfolderBase]: 32007/40631 cut-off events. [2024-10-12 00:06:36,611 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-10-12 00:06:36,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81272 conditions, 40631 events. 32007/40631 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 235882 event pairs, 23773 based on Foata normal form. 1/35771 useless extension candidates. Maximal degree in co-relation 81238. Up to 39195 conditions per place. [2024-10-12 00:06:36,932 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 48 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-10-12 00:06:36,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 79 transitions, 332 flow [2024-10-12 00:06:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:06:36,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:06:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-10-12 00:06:36,934 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.620253164556962 [2024-10-12 00:06:36,934 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 236 flow. Second operand 3 states and 147 transitions. [2024-10-12 00:06:36,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 79 transitions, 332 flow [2024-10-12 00:06:36,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 79 transitions, 322 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:36,937 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 226 flow [2024-10-12 00:06:36,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2024-10-12 00:06:36,938 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2024-10-12 00:06:36,939 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 226 flow [2024-10-12 00:06:36,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-10-12 00:06:36,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:36,939 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:36,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:06:36,940 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-12 00:06:36,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:36,940 INFO L85 PathProgramCache]: Analyzing trace with hash 200136662, now seen corresponding path program 1 times [2024-10-12 00:06:36,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:36,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089211858] [2024-10-12 00:06:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:36,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:37,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089211858] [2024-10-12 00:06:37,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089211858] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160654062] [2024-10-12 00:06:37,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:37,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:37,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:37,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:37,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 00:06:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:37,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 00:06:37,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:37,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-12 00:06:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:37,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:37,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-12 00:06:37,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-12 00:06:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:37,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160654062] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:37,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:37,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-12 00:06:37,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17755274] [2024-10-12 00:06:37,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:37,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 00:06:37,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 00:06:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-12 00:06:37,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2024-10-12 00:06:37,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 226 flow. Second operand has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 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) [2024-10-12 00:06:37,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:37,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2024-10-12 00:06:37,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:43,295 INFO L124 PetriNetUnfolderBase]: 46167/70061 cut-off events. [2024-10-12 00:06:43,295 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-10-12 00:06:43,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128250 conditions, 70061 events. 46167/70061 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 3024. Compared 585376 event pairs, 18757 based on Foata normal form. 0/61407 useless extension candidates. Maximal degree in co-relation 128230. Up to 32815 conditions per place. [2024-10-12 00:06:43,896 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 87 selfloop transitions, 12 changer transitions 0/128 dead transitions. [2024-10-12 00:06:43,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 128 transitions, 532 flow [2024-10-12 00:06:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 00:06:43,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-12 00:06:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 371 transitions. [2024-10-12 00:06:43,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5870253164556962 [2024-10-12 00:06:43,898 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 226 flow. Second operand 8 states and 371 transitions. [2024-10-12 00:06:43,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 128 transitions, 532 flow [2024-10-12 00:06:43,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 128 transitions, 528 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:06:43,901 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 270 flow [2024-10-12 00:06:43,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=270, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2024-10-12 00:06:43,902 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 10 predicate places. [2024-10-12 00:06:43,903 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 270 flow [2024-10-12 00:06:43,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 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) [2024-10-12 00:06:43,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:43,903 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:43,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 00:06:44,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:44,108 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-12 00:06:44,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:44,109 INFO L85 PathProgramCache]: Analyzing trace with hash 728860106, now seen corresponding path program 1 times [2024-10-12 00:06:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:44,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9062637] [2024-10-12 00:06:44,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:44,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:44,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:44,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:44,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9062637] [2024-10-12 00:06:44,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9062637] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:06:44,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:06:44,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:06:44,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108859683] [2024-10-12 00:06:44,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:06:44,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:06:44,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:06:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:06:44,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 79 [2024-10-12 00:06:44,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-10-12 00:06:44,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:44,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 79 [2024-10-12 00:06:44,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:54,224 INFO L124 PetriNetUnfolderBase]: 95418/124241 cut-off events. [2024-10-12 00:06:54,224 INFO L125 PetriNetUnfolderBase]: For 47632/47632 co-relation queries the response was YES. [2024-10-12 00:06:54,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280787 conditions, 124241 events. 95418/124241 cut-off events. For 47632/47632 co-relation queries the response was YES. Maximal size of possible extension queue 4081. Compared 808320 event pairs, 53624 based on Foata normal form. 1832/114965 useless extension candidates. Maximal degree in co-relation 280755. Up to 86322 conditions per place. [2024-10-12 00:06:55,677 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 115 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2024-10-12 00:06:55,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 144 transitions, 690 flow [2024-10-12 00:06:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:06:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:06:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2024-10-12 00:06:55,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7120253164556962 [2024-10-12 00:06:55,680 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 270 flow. Second operand 4 states and 225 transitions. [2024-10-12 00:06:55,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 144 transitions, 690 flow [2024-10-12 00:06:55,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 144 transitions, 680 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:06:55,727 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 289 flow [2024-10-12 00:06:55,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2024-10-12 00:06:55,728 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2024-10-12 00:06:55,728 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 289 flow [2024-10-12 00:06:55,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2024-10-12 00:06:55,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:55,729 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:55,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:06:55,729 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2024-10-12 00:06:55,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:55,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1027190265, now seen corresponding path program 1 times [2024-10-12 00:06:55,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:55,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897661009] [2024-10-12 00:06:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:55,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:56,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:56,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897661009] [2024-10-12 00:06:56,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897661009] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:56,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148083069] [2024-10-12 00:06:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:56,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:56,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:56,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:06:56,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 00:06:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:56,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-12 00:06:56,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:56,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-12 00:06:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:56,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:56,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-12 00:06:56,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-12 00:06:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:06:56,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148083069] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:56,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:56,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-12 00:06:56,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636759224] [2024-10-12 00:06:56,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:56,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 00:06:56,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 00:06:56,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-12 00:06:56,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 79 [2024-10-12 00:06:56,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 289 flow. Second operand has 11 states, 11 states have (on average 37.54545454545455) internal successors, (413), 11 states have internal predecessors, (413), 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) [2024-10-12 00:06:56,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:56,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 79 [2024-10-12 00:06:56,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand