./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c7c6ca5d 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/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -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 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 15:06:07,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:06:07,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:06:07,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:06:07,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:06:07,752 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:06:07,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:06:07,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:06:07,754 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:06:07,756 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:06:07,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:06:07,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:06:07,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:06:07,759 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:06:07,759 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:06:07,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:06:07,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:06:07,760 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:06:07,762 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:06:07,762 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:06:07,762 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:06:07,765 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:06:07,765 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:06:07,766 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:06:07,766 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:06:07,766 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:06:07,766 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:06:07,766 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:06:07,767 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:06:07,767 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:06:07,767 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:06:07,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:06:07,767 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:06:07,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:06:07,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:06:07,768 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:06:07,768 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:06:07,769 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:06:07,769 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:06:07,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:06:07,770 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:06:07,771 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:06:07,771 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:06:07,771 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:06:07,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 [2024-11-09 15:06:08,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:06:08,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:06:08,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:06:08,078 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:06:08,079 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:06:08,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2024-11-09 15:06:09,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:06:09,888 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:06:09,889 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2024-11-09 15:06:09,916 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0252b1ac1/dd522f1088e6417dbffff19af1871ba0/FLAGcd9667572 [2024-11-09 15:06:09,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0252b1ac1/dd522f1088e6417dbffff19af1871ba0 [2024-11-09 15:06:09,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:06:09,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:06:09,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:06:09,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:06:09,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:06:09,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:06:09" (1/1) ... [2024-11-09 15:06:09,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dfec8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:09, skipping insertion in model container [2024-11-09 15:06:09,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:06:09" (1/1) ... [2024-11-09 15:06:09,999 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:06:10,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:06:10,550 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:06:10,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:06:10,680 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:06:10,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10 WrapperNode [2024-11-09 15:06:10,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:06:10,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:06:10,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:06:10,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:06:10,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (1/1) ... [2024-11-09 15:06:10,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (1/1) ... [2024-11-09 15:06:10,766 INFO L138 Inliner]: procedures = 271, calls = 110, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 290 [2024-11-09 15:06:10,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:06:10,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:06:10,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:06:10,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:06:10,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (1/1) ... [2024-11-09 15:06:10,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (1/1) ... [2024-11-09 15:06:10,790 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (1/1) ... [2024-11-09 15:06:10,824 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 70, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 5 writes are split as follows [0, 0, 4, 1]. [2024-11-09 15:06:10,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (1/1) ... [2024-11-09 15:06:10,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (1/1) ... [2024-11-09 15:06:10,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (1/1) ... [2024-11-09 15:06:10,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (1/1) ... [2024-11-09 15:06:10,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (1/1) ... [2024-11-09 15:06:10,854 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (1/1) ... [2024-11-09 15:06:10,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:06:10,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:06:10,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:06:10,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:06:10,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (1/1) ... [2024-11-09 15:06:10,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:06:10,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:10,902 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) [2024-11-09 15:06:10,906 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 [2024-11-09 15:06:10,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 15:06:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 15:06:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 15:06:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 15:06:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 15:06:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 15:06:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 15:06:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:06:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:06:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 15:06:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 15:06:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 15:06:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:06:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 15:06:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 15:06:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:06:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:06:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 15:06:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 15:06:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:06:10,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:06:10,964 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:06:11,107 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:06:11,108 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:06:11,568 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:06:11,569 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:06:12,116 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:06:12,116 INFO L316 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-09 15:06:12,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:06:12 BoogieIcfgContainer [2024-11-09 15:06:12,117 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:06:12,119 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:06:12,119 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:06:12,124 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:06:12,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:06:09" (1/3) ... [2024-11-09 15:06:12,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776b1977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:06:12, skipping insertion in model container [2024-11-09 15:06:12,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:06:10" (2/3) ... [2024-11-09 15:06:12,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776b1977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:06:12, skipping insertion in model container [2024-11-09 15:06:12,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:06:12" (3/3) ... [2024-11-09 15:06:12,127 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2024-11-09 15:06:12,147 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:06:12,148 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-11-09 15:06:12,148 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:06:12,203 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 15:06:12,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 111 transitions, 229 flow [2024-11-09 15:06:12,305 INFO L124 PetriNetUnfolderBase]: 35/158 cut-off events. [2024-11-09 15:06:12,305 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 15:06:12,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 158 events. 35/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 600 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 96. Up to 8 conditions per place. [2024-11-09 15:06:12,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 111 transitions, 229 flow [2024-11-09 15:06:12,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 110 transitions, 227 flow [2024-11-09 15:06:12,331 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:06:12,339 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;@7148da9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:06:12,340 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-09 15:06:12,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:06:12,344 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:06:12,345 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:06:12,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:12,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:06:12,346 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:06:12,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:12,352 INFO L85 PathProgramCache]: Analyzing trace with hash 757606, now seen corresponding path program 1 times [2024-11-09 15:06:12,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:12,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124391993] [2024-11-09 15:06:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:12,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:12,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:12,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124391993] [2024-11-09 15:06:12,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124391993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:12,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:12,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:12,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670162022] [2024-11-09 15:06:12,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:12,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:12,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:12,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-11-09 15:06:12,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 110 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:12,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:12,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-11-09 15:06:12,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:13,284 INFO L124 PetriNetUnfolderBase]: 440/1383 cut-off events. [2024-11-09 15:06:13,285 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 15:06:13,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 1383 events. 440/1383 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9273 event pairs, 396 based on Foata normal form. 269/1483 useless extension candidates. Maximal degree in co-relation 2180. Up to 881 conditions per place. [2024-11-09 15:06:13,300 INFO L140 encePairwiseOnDemand]: 85/111 looper letters, 47 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-09 15:06:13,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 291 flow [2024-11-09 15:06:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:13,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:13,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2024-11-09 15:06:13,313 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5427927927927928 [2024-11-09 15:06:13,315 INFO L175 Difference]: Start difference. First operand has 90 places, 110 transitions, 227 flow. Second operand 4 states and 241 transitions. [2024-11-09 15:06:13,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 291 flow [2024-11-09 15:06:13,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:06:13,346 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 211 flow [2024-11-09 15:06:13,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2024-11-09 15:06:13,352 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2024-11-09 15:06:13,354 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 211 flow [2024-11-09 15:06:13,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:13,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:13,359 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:06:13,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:06:13,359 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:06:13,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:13,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1095767238, now seen corresponding path program 1 times [2024-11-09 15:06:13,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:13,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480126428] [2024-11-09 15:06:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:13,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:13,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:13,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480126428] [2024-11-09 15:06:13,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480126428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:13,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256887204] [2024-11-09 15:06:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:13,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:13,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:13,546 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) [2024-11-09 15:06:13,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:06:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:13,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:06:13,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:13,719 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:06:13,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256887204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:13,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:06:13,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:06:13,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136520477] [2024-11-09 15:06:13,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:13,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:06:13,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:13,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:06:13,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:06:13,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-11-09 15:06:13,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 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) [2024-11-09 15:06:13,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:13,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-11-09 15:06:13,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:14,059 INFO L124 PetriNetUnfolderBase]: 440/1382 cut-off events. [2024-11-09 15:06:14,059 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 15:06:14,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 1382 events. 440/1382 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9288 event pairs, 396 based on Foata normal form. 1/1214 useless extension candidates. Maximal degree in co-relation 2263. Up to 876 conditions per place. [2024-11-09 15:06:14,069 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 43 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-11-09 15:06:14,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 91 transitions, 305 flow [2024-11-09 15:06:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:06:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:06:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 302 transitions. [2024-11-09 15:06:14,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-11-09 15:06:14,073 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 211 flow. Second operand 6 states and 302 transitions. [2024-11-09 15:06:14,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 91 transitions, 305 flow [2024-11-09 15:06:14,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:06:14,076 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 217 flow [2024-11-09 15:06:14,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-11-09 15:06:14,077 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 8 predicate places. [2024-11-09 15:06:14,077 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 217 flow [2024-11-09 15:06:14,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 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) [2024-11-09 15:06:14,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:14,078 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:06:14,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 15:06:14,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:14,283 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:06:14,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:14,284 INFO L85 PathProgramCache]: Analyzing trace with hash -390953220, now seen corresponding path program 1 times [2024-11-09 15:06:14,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:14,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333551680] [2024-11-09 15:06:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:14,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:06:14,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:14,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333551680] [2024-11-09 15:06:14,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333551680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:14,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:14,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:14,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611846694] [2024-11-09 15:06:14,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:14,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:06:14,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:14,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:06:14,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:06:14,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-11-09 15:06:14,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 217 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:14,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:14,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-11-09 15:06:14,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:14,568 INFO L124 PetriNetUnfolderBase]: 440/1381 cut-off events. [2024-11-09 15:06:14,569 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-09 15:06:14,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 1381 events. 440/1381 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9260 event pairs, 396 based on Foata normal form. 1/1214 useless extension candidates. Maximal degree in co-relation 2259. Up to 879 conditions per place. [2024-11-09 15:06:14,577 INFO L140 encePairwiseOnDemand]: 108/111 looper letters, 44 selfloop transitions, 4 changer transitions 0/90 dead transitions. [2024-11-09 15:06:14,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 309 flow [2024-11-09 15:06:14,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:06:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:06:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-11-09 15:06:14,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5195195195195195 [2024-11-09 15:06:14,581 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 217 flow. Second operand 3 states and 173 transitions. [2024-11-09 15:06:14,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 309 flow [2024-11-09 15:06:14,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 90 transitions, 287 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-09 15:06:14,585 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 199 flow [2024-11-09 15:06:14,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=91, 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=3, PETRI_FLOW=199, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-11-09 15:06:14,587 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 3 predicate places. [2024-11-09 15:06:14,587 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 199 flow [2024-11-09 15:06:14,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:14,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:14,588 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:14,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:06:14,589 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:06:14,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:14,589 INFO L85 PathProgramCache]: Analyzing trace with hash -2043921111, now seen corresponding path program 1 times [2024-11-09 15:06:14,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:14,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38712817] [2024-11-09 15:06:14,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:14,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:14,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:14,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38712817] [2024-11-09 15:06:14,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38712817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:14,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109234927] [2024-11-09 15:06:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:14,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:14,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:14,689 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) [2024-11-09 15:06:14,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:06:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:14,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:06:14,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:14,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:14,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:14,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109234927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:14,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:14,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:06:14,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042955183] [2024-11-09 15:06:14,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:14,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:06:14,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:14,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:06:14,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:06:14,871 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-11-09 15:06:14,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 199 flow. Second operand has 10 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 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) [2024-11-09 15:06:14,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:14,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-11-09 15:06:14,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:15,188 INFO L124 PetriNetUnfolderBase]: 440/1385 cut-off events. [2024-11-09 15:06:15,188 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-09 15:06:15,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 1385 events. 440/1385 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9247 event pairs, 396 based on Foata normal form. 2/1220 useless extension candidates. Maximal degree in co-relation 2252. Up to 877 conditions per place. [2024-11-09 15:06:15,196 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 44 selfloop transitions, 7 changer transitions 0/93 dead transitions. [2024-11-09 15:06:15,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 316 flow [2024-11-09 15:06:15,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:06:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:06:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 347 transitions. [2024-11-09 15:06:15,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4465894465894466 [2024-11-09 15:06:15,199 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 199 flow. Second operand 7 states and 347 transitions. [2024-11-09 15:06:15,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 316 flow [2024-11-09 15:06:15,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:15,204 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 225 flow [2024-11-09 15:06:15,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2024-11-09 15:06:15,206 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2024-11-09 15:06:15,207 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 225 flow [2024-11-09 15:06:15,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.3) internal successors, (433), 10 states have internal predecessors, (433), 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) [2024-11-09 15:06:15,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:15,207 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:15,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:06:15,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 15:06:15,409 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:06:15,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:15,410 INFO L85 PathProgramCache]: Analyzing trace with hash -434454231, now seen corresponding path program 2 times [2024-11-09 15:06:15,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:15,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122045281] [2024-11-09 15:06:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:15,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:06:15,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:15,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122045281] [2024-11-09 15:06:15,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122045281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:15,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:15,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:06:15,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199700023] [2024-11-09 15:06:15,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:15,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:15,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:15,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:15,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:15,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 111 [2024-11-09 15:06:15,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:15,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:15,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 111 [2024-11-09 15:06:15,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:15,748 INFO L124 PetriNetUnfolderBase]: 436/1245 cut-off events. [2024-11-09 15:06:15,748 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 15:06:15,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2151 conditions, 1245 events. 436/1245 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8142 event pairs, 0 based on Foata normal form. 19/1138 useless extension candidates. Maximal degree in co-relation 2112. Up to 824 conditions per place. [2024-11-09 15:06:15,755 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 86 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2024-11-09 15:06:15,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 128 transitions, 473 flow [2024-11-09 15:06:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:15,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-11-09 15:06:15,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5653153153153153 [2024-11-09 15:06:15,757 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 225 flow. Second operand 4 states and 251 transitions. [2024-11-09 15:06:15,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 128 transitions, 473 flow [2024-11-09 15:06:15,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 128 transitions, 469 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:15,761 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 227 flow [2024-11-09 15:06:15,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2024-11-09 15:06:15,765 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 9 predicate places. [2024-11-09 15:06:15,765 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 227 flow [2024-11-09 15:06:15,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 15:06:15,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:15,765 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:15,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:06:15,766 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:06:15,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2088788441, now seen corresponding path program 1 times [2024-11-09 15:06:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:15,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200329826] [2024-11-09 15:06:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:06:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200329826] [2024-11-09 15:06:15,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200329826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:15,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949852734] [2024-11-09 15:06:15,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:15,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:15,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:15,943 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) [2024-11-09 15:06:15,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:06:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:16,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 15:06:16,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:06:16,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:06:16,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949852734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:16,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:16,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 15:06:16,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159902916] [2024-11-09 15:06:16,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:16,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:06:16,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:16,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:06:16,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:06:16,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-11-09 15:06:16,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 227 flow. Second operand has 18 states, 18 states have (on average 43.22222222222222) internal successors, (778), 18 states have internal predecessors, (778), 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) [2024-11-09 15:06:16,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:16,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-11-09 15:06:16,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:16,558 INFO L124 PetriNetUnfolderBase]: 439/1337 cut-off events. [2024-11-09 15:06:16,558 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-09 15:06:16,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2292 conditions, 1337 events. 439/1337 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8729 event pairs, 396 based on Foata normal form. 4/1204 useless extension candidates. Maximal degree in co-relation 2217. Up to 859 conditions per place. [2024-11-09 15:06:16,566 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 44 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2024-11-09 15:06:16,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 99 transitions, 393 flow [2024-11-09 15:06:16,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:06:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:06:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 693 transitions. [2024-11-09 15:06:16,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-11-09 15:06:16,569 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 227 flow. Second operand 15 states and 693 transitions. [2024-11-09 15:06:16,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 99 transitions, 393 flow [2024-11-09 15:06:16,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 99 transitions, 387 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:06:16,574 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 318 flow [2024-11-09 15:06:16,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=318, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-11-09 15:06:16,576 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 24 predicate places. [2024-11-09 15:06:16,576 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 318 flow [2024-11-09 15:06:16,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 43.22222222222222) internal successors, (778), 18 states have internal predecessors, (778), 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) [2024-11-09 15:06:16,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:16,577 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:16,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 15:06:16,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:16,779 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:06:16,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:16,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1247712807, now seen corresponding path program 2 times [2024-11-09 15:06:16,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:16,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200935145] [2024-11-09 15:06:16,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:16,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:06:17,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:17,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200935145] [2024-11-09 15:06:17,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200935145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:17,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378624770] [2024-11-09 15:06:17,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:06:17,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:17,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:17,163 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) [2024-11-09 15:06:17,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:06:17,278 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:06:17,278 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:06:17,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 15:06:17,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:06:17,339 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 15:06:17,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378624770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:17,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:17,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-09 15:06:17,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927249233] [2024-11-09 15:06:17,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:17,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 15:06:17,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:17,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 15:06:17,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-09 15:06:17,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 111 [2024-11-09 15:06:17,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 318 flow. Second operand has 23 states, 23 states have (on average 43.21739130434783) internal successors, (994), 23 states have internal predecessors, (994), 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) [2024-11-09 15:06:17,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:17,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 111 [2024-11-09 15:06:17,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:18,032 INFO L124 PetriNetUnfolderBase]: 439/1346 cut-off events. [2024-11-09 15:06:18,032 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-11-09 15:06:18,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2335 conditions, 1346 events. 439/1346 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8737 event pairs, 396 based on Foata normal form. 3/1212 useless extension candidates. Maximal degree in co-relation 2200. Up to 859 conditions per place. [2024-11-09 15:06:18,041 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 44 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-11-09 15:06:18,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 105 transitions, 502 flow [2024-11-09 15:06:18,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 15:06:18,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 15:06:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 950 transitions. [2024-11-09 15:06:18,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40755040755040756 [2024-11-09 15:06:18,045 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 318 flow. Second operand 21 states and 950 transitions. [2024-11-09 15:06:18,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 105 transitions, 502 flow [2024-11-09 15:06:18,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 105 transitions, 492 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 15:06:18,049 INFO L231 Difference]: Finished difference. Result has 133 places, 105 transitions, 419 flow [2024-11-09 15:06:18,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=419, PETRI_PLACES=133, PETRI_TRANSITIONS=105} [2024-11-09 15:06:18,069 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 43 predicate places. [2024-11-09 15:06:18,069 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 105 transitions, 419 flow [2024-11-09 15:06:18,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 43.21739130434783) internal successors, (994), 23 states have internal predecessors, (994), 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) [2024-11-09 15:06:18,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:18,072 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:18,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:06:18,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:18,272 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-09 15:06:18,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:18,273 INFO L85 PathProgramCache]: Analyzing trace with hash 594819271, now seen corresponding path program 3 times [2024-11-09 15:06:18,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:18,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936462044] [2024-11-09 15:06:18,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:18,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:06:18,314 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:06:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:06:18,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:06:18,368 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:06:18,369 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-11-09 15:06:18,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2024-11-09 15:06:18,371 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2024-11-09 15:06:18,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2024-11-09 15:06:18,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2024-11-09 15:06:18,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2024-11-09 15:06:18,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2024-11-09 15:06:18,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2024-11-09 15:06:18,372 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2024-11-09 15:06:18,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2024-11-09 15:06:18,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2024-11-09 15:06:18,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2024-11-09 15:06:18,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2024-11-09 15:06:18,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2024-11-09 15:06:18,373 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2024-11-09 15:06:18,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2024-11-09 15:06:18,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2024-11-09 15:06:18,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2024-11-09 15:06:18,374 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2024-11-09 15:06:18,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 15:06:18,375 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-11-09 15:06:18,378 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:06:18,378 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 15:06:18,416 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:06:18,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 157 transitions, 330 flow [2024-11-09 15:06:18,445 INFO L124 PetriNetUnfolderBase]: 59/270 cut-off events. [2024-11-09 15:06:18,445 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 15:06:18,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 270 events. 59/270 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1213 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 160. Up to 12 conditions per place. [2024-11-09 15:06:18,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 157 transitions, 330 flow [2024-11-09 15:06:18,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 157 transitions, 330 flow [2024-11-09 15:06:18,453 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:06:18,457 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;@7148da9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:06:18,458 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-09 15:06:18,460 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:06:18,460 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:06:18,461 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:06:18,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:18,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:06:18,461 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:06:18,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:18,462 INFO L85 PathProgramCache]: Analyzing trace with hash 913507, now seen corresponding path program 1 times [2024-11-09 15:06:18,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:18,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337058006] [2024-11-09 15:06:18,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:18,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:18,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:18,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337058006] [2024-11-09 15:06:18,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337058006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:18,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:18,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:18,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094457944] [2024-11-09 15:06:18,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:18,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:18,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:18,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:18,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:18,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-09 15:06:18,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 157 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2024-11-09 15:06:18,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:18,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-09 15:06:18,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:22,185 INFO L124 PetriNetUnfolderBase]: 17181/36817 cut-off events. [2024-11-09 15:06:22,186 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-11-09 15:06:22,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62565 conditions, 36817 events. 17181/36817 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 375319 event pairs, 15876 based on Foata normal form. 8193/40952 useless extension candidates. Maximal degree in co-relation 50867. Up to 25644 conditions per place. [2024-11-09 15:06:22,450 INFO L140 encePairwiseOnDemand]: 121/157 looper letters, 68 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2024-11-09 15:06:22,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 129 transitions, 416 flow [2024-11-09 15:06:22,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2024-11-09 15:06:22,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.535031847133758 [2024-11-09 15:06:22,452 INFO L175 Difference]: Start difference. First operand has 126 places, 157 transitions, 330 flow. Second operand 4 states and 336 transitions. [2024-11-09 15:06:22,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 129 transitions, 416 flow [2024-11-09 15:06:22,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 129 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:06:22,455 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 294 flow [2024-11-09 15:06:22,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2024-11-09 15:06:22,456 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 5 predicate places. [2024-11-09 15:06:22,457 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 294 flow [2024-11-09 15:06:22,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2024-11-09 15:06:22,457 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:22,457 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 15:06:22,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:06:22,457 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:06:22,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:22,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1445402534, now seen corresponding path program 1 times [2024-11-09 15:06:22,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:22,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640083565] [2024-11-09 15:06:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:22,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:22,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:22,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640083565] [2024-11-09 15:06:22,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640083565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:22,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345439630] [2024-11-09 15:06:22,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:22,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:22,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:22,513 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) [2024-11-09 15:06:22,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:06:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:22,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:06:22,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:22,624 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:06:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345439630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:22,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:06:22,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:06:22,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719037048] [2024-11-09 15:06:22,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:22,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:06:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:22,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:06:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:06:22,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-09 15:06:22,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 58.833333333333336) internal successors, (353), 6 states have internal predecessors, (353), 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) [2024-11-09 15:06:22,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:22,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-09 15:06:22,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:25,516 INFO L124 PetriNetUnfolderBase]: 17181/36816 cut-off events. [2024-11-09 15:06:25,516 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-09 15:06:25,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62575 conditions, 36816 events. 17181/36816 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 375386 event pairs, 15876 based on Foata normal form. 1/32759 useless extension candidates. Maximal degree in co-relation 62556. Up to 25639 conditions per place. [2024-11-09 15:06:25,789 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 64 selfloop transitions, 6 changer transitions 0/128 dead transitions. [2024-11-09 15:06:25,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 430 flow [2024-11-09 15:06:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:06:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:06:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 419 transitions. [2024-11-09 15:06:25,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4447983014861996 [2024-11-09 15:06:25,791 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 294 flow. Second operand 6 states and 419 transitions. [2024-11-09 15:06:25,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 430 flow [2024-11-09 15:06:25,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:06:25,795 INFO L231 Difference]: Finished difference. Result has 134 places, 128 transitions, 300 flow [2024-11-09 15:06:25,796 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=134, PETRI_TRANSITIONS=128} [2024-11-09 15:06:25,797 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 8 predicate places. [2024-11-09 15:06:25,797 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 128 transitions, 300 flow [2024-11-09 15:06:25,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.833333333333336) internal successors, (353), 6 states have internal predecessors, (353), 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) [2024-11-09 15:06:25,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:25,798 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 15:06:25,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:06:25,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 15:06:26,000 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:06:26,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:26,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1857806521, now seen corresponding path program 1 times [2024-11-09 15:06:26,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:26,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296938120] [2024-11-09 15:06:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:26,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:06:26,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:26,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296938120] [2024-11-09 15:06:26,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296938120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:26,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:26,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:26,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899458655] [2024-11-09 15:06:26,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:26,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:06:26,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:26,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:06:26,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:06:26,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-09 15:06:26,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 128 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-11-09 15:06:26,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:26,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-09 15:06:26,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:28,693 INFO L124 PetriNetUnfolderBase]: 17181/36815 cut-off events. [2024-11-09 15:06:28,694 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-11-09 15:06:28,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62577 conditions, 36815 events. 17181/36815 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 375379 event pairs, 15876 based on Foata normal form. 1/32759 useless extension candidates. Maximal degree in co-relation 62552. Up to 25642 conditions per place. [2024-11-09 15:06:28,917 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 65 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-11-09 15:06:28,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 127 transitions, 434 flow [2024-11-09 15:06:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:06:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:06:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-11-09 15:06:28,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5138004246284501 [2024-11-09 15:06:28,918 INFO L175 Difference]: Start difference. First operand has 134 places, 128 transitions, 300 flow. Second operand 3 states and 242 transitions. [2024-11-09 15:06:28,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 127 transitions, 434 flow [2024-11-09 15:06:28,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 412 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-09 15:06:28,922 INFO L231 Difference]: Finished difference. Result has 129 places, 127 transitions, 282 flow [2024-11-09 15:06:28,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=129, PETRI_TRANSITIONS=127} [2024-11-09 15:06:28,923 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 3 predicate places. [2024-11-09 15:06:28,923 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 127 transitions, 282 flow [2024-11-09 15:06:28,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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) [2024-11-09 15:06:28,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:28,924 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:28,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 15:06:28,924 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:06:28,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:28,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1354312590, now seen corresponding path program 1 times [2024-11-09 15:06:28,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:28,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142559776] [2024-11-09 15:06:28,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:28,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:28,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:28,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142559776] [2024-11-09 15:06:28,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142559776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:28,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535579003] [2024-11-09 15:06:28,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:28,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:28,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:28,983 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) [2024-11-09 15:06:28,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:06:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:29,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:06:29,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:29,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:29,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535579003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:29,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:29,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-09 15:06:29,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359516334] [2024-11-09 15:06:29,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:29,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 15:06:29,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:29,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 15:06:29,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 15:06:29,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-09 15:06:29,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 127 transitions, 282 flow. Second operand has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 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) [2024-11-09 15:06:29,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:29,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-09 15:06:29,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:31,847 INFO L124 PetriNetUnfolderBase]: 17181/36819 cut-off events. [2024-11-09 15:06:31,847 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-09 15:06:31,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62580 conditions, 36819 events. 17181/36819 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 375315 event pairs, 15876 based on Foata normal form. 2/32765 useless extension candidates. Maximal degree in co-relation 62545. Up to 25640 conditions per place. [2024-11-09 15:06:32,045 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 65 selfloop transitions, 7 changer transitions 0/130 dead transitions. [2024-11-09 15:06:32,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 441 flow [2024-11-09 15:06:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:06:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:06:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 480 transitions. [2024-11-09 15:06:32,048 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4367606915377616 [2024-11-09 15:06:32,048 INFO L175 Difference]: Start difference. First operand has 129 places, 127 transitions, 282 flow. Second operand 7 states and 480 transitions. [2024-11-09 15:06:32,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 441 flow [2024-11-09 15:06:32,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 427 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:32,051 INFO L231 Difference]: Finished difference. Result has 135 places, 130 transitions, 308 flow [2024-11-09 15:06:32,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=135, PETRI_TRANSITIONS=130} [2024-11-09 15:06:32,052 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 9 predicate places. [2024-11-09 15:06:32,052 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 130 transitions, 308 flow [2024-11-09 15:06:32,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.3) internal successors, (593), 10 states have internal predecessors, (593), 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) [2024-11-09 15:06:32,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:32,053 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:32,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 15:06:32,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:32,254 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:06:32,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:32,254 INFO L85 PathProgramCache]: Analyzing trace with hash -815558254, now seen corresponding path program 2 times [2024-11-09 15:06:32,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:32,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210981036] [2024-11-09 15:06:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:32,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 15:06:32,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:32,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210981036] [2024-11-09 15:06:32,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210981036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:32,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:32,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:06:32,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18814516] [2024-11-09 15:06:32,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:32,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:32,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:32,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:32,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:32,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 157 [2024-11-09 15:06:32,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 130 transitions, 308 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) [2024-11-09 15:06:32,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:32,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 157 [2024-11-09 15:06:32,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:35,248 INFO L124 PetriNetUnfolderBase]: 19364/41344 cut-off events. [2024-11-09 15:06:35,253 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-09 15:06:35,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70373 conditions, 41344 events. 19364/41344 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 427115 event pairs, 11718 based on Foata normal form. 19/36807 useless extension candidates. Maximal degree in co-relation 70333. Up to 28850 conditions per place. [2024-11-09 15:06:35,537 INFO L140 encePairwiseOnDemand]: 151/157 looper letters, 111 selfloop transitions, 3 changer transitions 0/169 dead transitions. [2024-11-09 15:06:35,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 169 transitions, 614 flow [2024-11-09 15:06:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:35,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2024-11-09 15:06:35,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5414012738853503 [2024-11-09 15:06:35,539 INFO L175 Difference]: Start difference. First operand has 135 places, 130 transitions, 308 flow. Second operand 4 states and 340 transitions. [2024-11-09 15:06:35,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 169 transitions, 614 flow [2024-11-09 15:06:35,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 169 transitions, 610 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:35,542 INFO L231 Difference]: Finished difference. Result has 138 places, 132 transitions, 328 flow [2024-11-09 15:06:35,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=328, PETRI_PLACES=138, PETRI_TRANSITIONS=132} [2024-11-09 15:06:35,543 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 12 predicate places. [2024-11-09 15:06:35,543 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 132 transitions, 328 flow [2024-11-09 15:06:35,543 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) [2024-11-09 15:06:35,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:35,544 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:35,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 15:06:35,544 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:06:35,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:35,545 INFO L85 PathProgramCache]: Analyzing trace with hash -236589424, now seen corresponding path program 1 times [2024-11-09 15:06:35,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:35,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416430792] [2024-11-09 15:06:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:35,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:06:35,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:35,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416430792] [2024-11-09 15:06:35,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416430792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:35,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116631396] [2024-11-09 15:06:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:35,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:35,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:35,663 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) [2024-11-09 15:06:35,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:06:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:35,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 15:06:35,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:06:35,805 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:06:35,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116631396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:35,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:35,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 15:06:35,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917051980] [2024-11-09 15:06:35,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:35,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 15:06:35,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:35,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 15:06:35,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-09 15:06:35,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-09 15:06:35,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 132 transitions, 328 flow. Second operand has 18 states, 18 states have (on average 59.27777777777778) internal successors, (1067), 18 states have internal predecessors, (1067), 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) [2024-11-09 15:06:35,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:35,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-09 15:06:35,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:38,882 INFO L124 PetriNetUnfolderBase]: 17179/36918 cut-off events. [2024-11-09 15:06:38,882 INFO L125 PetriNetUnfolderBase]: For 904/1609 co-relation queries the response was YES. [2024-11-09 15:06:39,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63499 conditions, 36918 events. 17179/36918 cut-off events. For 904/1609 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 376348 event pairs, 15876 based on Foata normal form. 21/33232 useless extension candidates. Maximal degree in co-relation 63422. Up to 25634 conditions per place. [2024-11-09 15:06:39,131 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 66 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2024-11-09 15:06:39,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 140 transitions, 538 flow [2024-11-09 15:06:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 15:06:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 15:06:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 954 transitions. [2024-11-09 15:06:39,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4050955414012739 [2024-11-09 15:06:39,134 INFO L175 Difference]: Start difference. First operand has 138 places, 132 transitions, 328 flow. Second operand 15 states and 954 transitions. [2024-11-09 15:06:39,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 140 transitions, 538 flow [2024-11-09 15:06:39,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 140 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:06:39,140 INFO L231 Difference]: Finished difference. Result has 155 places, 140 transitions, 423 flow [2024-11-09 15:06:39,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=423, PETRI_PLACES=155, PETRI_TRANSITIONS=140} [2024-11-09 15:06:39,141 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 29 predicate places. [2024-11-09 15:06:39,141 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 140 transitions, 423 flow [2024-11-09 15:06:39,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 59.27777777777778) internal successors, (1067), 18 states have internal predecessors, (1067), 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) [2024-11-09 15:06:39,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:39,142 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:39,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 15:06:39,343 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 [2024-11-09 15:06:39,343 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:06:39,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:39,344 INFO L85 PathProgramCache]: Analyzing trace with hash -416881584, now seen corresponding path program 2 times [2024-11-09 15:06:39,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:39,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364674153] [2024-11-09 15:06:39,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:39,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:06:39,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:39,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364674153] [2024-11-09 15:06:39,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364674153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:39,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188852648] [2024-11-09 15:06:39,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:06:39,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:39,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:39,719 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) [2024-11-09 15:06:39,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:06:39,849 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:06:39,849 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:06:39,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 15:06:39,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:06:39,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:06:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 15:06:40,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188852648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:06:40,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:06:40,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-11-09 15:06:40,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479865300] [2024-11-09 15:06:40,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:06:40,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 15:06:40,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:40,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 15:06:40,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-09 15:06:40,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-09 15:06:40,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 140 transitions, 423 flow. Second operand has 23 states, 23 states have (on average 59.26086956521739) internal successors, (1363), 23 states have internal predecessors, (1363), 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) [2024-11-09 15:06:40,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:40,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-09 15:06:40,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:43,376 INFO L124 PetriNetUnfolderBase]: 17179/36927 cut-off events. [2024-11-09 15:06:43,376 INFO L125 PetriNetUnfolderBase]: For 985/1690 co-relation queries the response was YES. [2024-11-09 15:06:43,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63544 conditions, 36927 events. 17179/36927 cut-off events. For 985/1690 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 376398 event pairs, 15876 based on Foata normal form. 20/33240 useless extension candidates. Maximal degree in co-relation 63407. Up to 25634 conditions per place. [2024-11-09 15:06:43,652 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 66 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2024-11-09 15:06:43,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 146 transitions, 651 flow [2024-11-09 15:06:43,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 15:06:43,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 15:06:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1307 transitions. [2024-11-09 15:06:43,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3964209887776767 [2024-11-09 15:06:43,656 INFO L175 Difference]: Start difference. First operand has 155 places, 140 transitions, 423 flow. Second operand 21 states and 1307 transitions. [2024-11-09 15:06:43,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 146 transitions, 651 flow [2024-11-09 15:06:43,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 146 transitions, 641 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 15:06:43,661 INFO L231 Difference]: Finished difference. Result has 174 places, 146 transitions, 524 flow [2024-11-09 15:06:43,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=524, PETRI_PLACES=174, PETRI_TRANSITIONS=146} [2024-11-09 15:06:43,662 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 48 predicate places. [2024-11-09 15:06:43,662 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 146 transitions, 524 flow [2024-11-09 15:06:43,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.26086956521739) internal successors, (1363), 23 states have internal predecessors, (1363), 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) [2024-11-09 15:06:43,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:43,663 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:43,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 15:06:43,864 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 [2024-11-09 15:06:43,864 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:06:43,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:43,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2019517171, now seen corresponding path program 3 times [2024-11-09 15:06:43,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:43,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372276301] [2024-11-09 15:06:43,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:43,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 15:06:43,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:43,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372276301] [2024-11-09 15:06:43,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372276301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:06:43,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516432787] [2024-11-09 15:06:43,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 15:06:43,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:06:43,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:06:43,989 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) [2024-11-09 15:06:43,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 15:06:44,104 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 15:06:44,104 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:06:44,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 15:06:44,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:06:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 15:06:44,149 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:06:44,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516432787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:44,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:06:44,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-09 15:06:44,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795204182] [2024-11-09 15:06:44,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:44,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:06:44,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:44,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:06:44,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 15:06:44,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2024-11-09 15:06:44,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 146 transitions, 524 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) [2024-11-09 15:06:44,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:44,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2024-11-09 15:06:44,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:47,490 INFO L124 PetriNetUnfolderBase]: 18924/35988 cut-off events. [2024-11-09 15:06:47,491 INFO L125 PetriNetUnfolderBase]: For 1038/1038 co-relation queries the response was YES. [2024-11-09 15:06:47,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66191 conditions, 35988 events. 18924/35988 cut-off events. For 1038/1038 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 338444 event pairs, 1746 based on Foata normal form. 361/32981 useless extension candidates. Maximal degree in co-relation 66030. Up to 22257 conditions per place. [2024-11-09 15:06:47,803 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 157 selfloop transitions, 6 changer transitions 0/217 dead transitions. [2024-11-09 15:06:47,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 217 transitions, 990 flow [2024-11-09 15:06:47,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:47,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:47,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2024-11-09 15:06:47,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5843949044585988 [2024-11-09 15:06:47,805 INFO L175 Difference]: Start difference. First operand has 174 places, 146 transitions, 524 flow. Second operand 4 states and 367 transitions. [2024-11-09 15:06:47,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 217 transitions, 990 flow [2024-11-09 15:06:47,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 217 transitions, 947 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-09 15:06:47,814 INFO L231 Difference]: Finished difference. Result has 163 places, 145 transitions, 489 flow [2024-11-09 15:06:47,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=489, PETRI_PLACES=163, PETRI_TRANSITIONS=145} [2024-11-09 15:06:47,815 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 37 predicate places. [2024-11-09 15:06:47,815 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 145 transitions, 489 flow [2024-11-09 15:06:47,816 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) [2024-11-09 15:06:47,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:47,816 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:47,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 15:06:48,016 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 [2024-11-09 15:06:48,017 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:06:48,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:48,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1819478046, now seen corresponding path program 1 times [2024-11-09 15:06:48,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:48,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455691573] [2024-11-09 15:06:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:48,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-09 15:06:48,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:48,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455691573] [2024-11-09 15:06:48,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455691573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:48,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:48,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:06:48,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757300360] [2024-11-09 15:06:48,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:48,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:48,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:48,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:48,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:48,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 157 [2024-11-09 15:06:48,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 145 transitions, 489 flow. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2024-11-09 15:06:48,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:48,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 157 [2024-11-09 15:06:48,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:51,240 INFO L124 PetriNetUnfolderBase]: 17454/33299 cut-off events. [2024-11-09 15:06:51,240 INFO L125 PetriNetUnfolderBase]: For 3110/3110 co-relation queries the response was YES. [2024-11-09 15:06:51,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62125 conditions, 33299 events. 17454/33299 cut-off events. For 3110/3110 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 308835 event pairs, 2174 based on Foata normal form. 361/31054 useless extension candidates. Maximal degree in co-relation 61985. Up to 23390 conditions per place. [2024-11-09 15:06:51,490 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 156 selfloop transitions, 6 changer transitions 0/217 dead transitions. [2024-11-09 15:06:51,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 217 transitions, 955 flow [2024-11-09 15:06:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:06:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:06:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2024-11-09 15:06:51,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.589171974522293 [2024-11-09 15:06:51,492 INFO L175 Difference]: Start difference. First operand has 163 places, 145 transitions, 489 flow. Second operand 4 states and 370 transitions. [2024-11-09 15:06:51,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 217 transitions, 955 flow [2024-11-09 15:06:51,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 217 transitions, 943 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:06:51,499 INFO L231 Difference]: Finished difference. Result has 163 places, 145 transitions, 493 flow [2024-11-09 15:06:51,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=493, PETRI_PLACES=163, PETRI_TRANSITIONS=145} [2024-11-09 15:06:51,500 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 37 predicate places. [2024-11-09 15:06:51,500 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 145 transitions, 493 flow [2024-11-09 15:06:51,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 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) [2024-11-09 15:06:51,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:51,501 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:51,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 15:06:51,501 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:06:51,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:51,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2020833460, now seen corresponding path program 1 times [2024-11-09 15:06:51,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:51,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130648339] [2024-11-09 15:06:51,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:51,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 15:06:52,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:52,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130648339] [2024-11-09 15:06:52,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130648339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:52,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:52,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:06:52,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830349636] [2024-11-09 15:06:52,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:52,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 15:06:52,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:52,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 15:06:52,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 15:06:52,446 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 157 [2024-11-09 15:06:52,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 145 transitions, 493 flow. Second operand has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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) [2024-11-09 15:06:52,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:52,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 157 [2024-11-09 15:06:52,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:06:56,850 INFO L124 PetriNetUnfolderBase]: 23304/47747 cut-off events. [2024-11-09 15:06:56,851 INFO L125 PetriNetUnfolderBase]: For 4238/4257 co-relation queries the response was YES. [2024-11-09 15:06:57,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86270 conditions, 47747 events. 23304/47747 cut-off events. For 4238/4257 co-relation queries the response was YES. Maximal size of possible extension queue 1452. Compared 495866 event pairs, 2820 based on Foata normal form. 563/44284 useless extension candidates. Maximal degree in co-relation 86130. Up to 23197 conditions per place. [2024-11-09 15:06:57,253 INFO L140 encePairwiseOnDemand]: 146/157 looper letters, 279 selfloop transitions, 16 changer transitions 0/350 dead transitions. [2024-11-09 15:06:57,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 350 transitions, 1594 flow [2024-11-09 15:06:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 15:06:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 15:06:57,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 681 transitions. [2024-11-09 15:06:57,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6196542311191993 [2024-11-09 15:06:57,254 INFO L175 Difference]: Start difference. First operand has 163 places, 145 transitions, 493 flow. Second operand 7 states and 681 transitions. [2024-11-09 15:06:57,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 350 transitions, 1594 flow [2024-11-09 15:06:57,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 350 transitions, 1573 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:06:57,260 INFO L231 Difference]: Finished difference. Result has 173 places, 162 transitions, 611 flow [2024-11-09 15:06:57,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=611, PETRI_PLACES=173, PETRI_TRANSITIONS=162} [2024-11-09 15:06:57,261 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, 47 predicate places. [2024-11-09 15:06:57,261 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 162 transitions, 611 flow [2024-11-09 15:06:57,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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) [2024-11-09 15:06:57,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:57,261 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 15:06:57,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 15:06:57,262 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-09 15:06:57,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:57,262 INFO L85 PathProgramCache]: Analyzing trace with hash 466741484, now seen corresponding path program 1 times [2024-11-09 15:06:57,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:57,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919296678] [2024-11-09 15:06:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:57,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:06:57,286 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 15:06:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 15:06:57,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 15:06:57,310 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 15:06:57,310 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-11-09 15:06:57,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2024-11-09 15:06:57,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2024-11-09 15:06:57,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2024-11-09 15:06:57,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2024-11-09 15:06:57,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2024-11-09 15:06:57,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2024-11-09 15:06:57,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2024-11-09 15:06:57,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2024-11-09 15:06:57,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2024-11-09 15:06:57,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2024-11-09 15:06:57,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2024-11-09 15:06:57,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2024-11-09 15:06:57,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2024-11-09 15:06:57,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2024-11-09 15:06:57,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2024-11-09 15:06:57,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2024-11-09 15:06:57,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2024-11-09 15:06:57,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2024-11-09 15:06:57,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2024-11-09 15:06:57,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2024-11-09 15:06:57,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2024-11-09 15:06:57,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2024-11-09 15:06:57,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 15:06:57,314 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 15:06:57,314 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 15:06:57,314 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 15:06:57,362 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 15:06:57,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 203 transitions, 433 flow [2024-11-09 15:06:57,395 INFO L124 PetriNetUnfolderBase]: 86/401 cut-off events. [2024-11-09 15:06:57,396 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-09 15:06:57,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 401 events. 86/401 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1945 event pairs, 1 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 279. Up to 16 conditions per place. [2024-11-09 15:06:57,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 203 transitions, 433 flow [2024-11-09 15:06:57,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 203 transitions, 433 flow [2024-11-09 15:06:57,409 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:06:57,410 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;@7148da9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:06:57,410 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-11-09 15:06:57,413 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:06:57,413 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 15:06:57,413 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:06:57,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:06:57,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:06:57,413 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2024-11-09 15:06:57,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:06:57,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1115086, now seen corresponding path program 1 times [2024-11-09 15:06:57,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:06:57,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233886604] [2024-11-09 15:06:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:06:57,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:06:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:06:57,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:06:57,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:06:57,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233886604] [2024-11-09 15:06:57,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233886604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:06:57,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:06:57,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:06:57,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168747719] [2024-11-09 15:06:57,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:06:57,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:06:57,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:06:57,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:06:57,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:06:57,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 203 [2024-11-09 15:06:57,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 203 transitions, 433 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 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) [2024-11-09 15:06:57,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:06:57,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 203 [2024-11-09 15:06:57,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand