./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_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 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 16:43:32,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 16:43:32,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 16:43:32,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 16:43:32,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 16:43:32,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 16:43:32,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 16:43:32,568 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 16:43:32,569 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 16:43:32,569 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 16:43:32,569 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 16:43:32,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 16:43:32,570 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 16:43:32,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 16:43:32,570 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 16:43:32,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 16:43:32,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 16:43:32,571 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 16:43:32,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 16:43:32,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 16:43:32,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 16:43:32,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 16:43:32,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 16:43:32,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 16:43:32,573 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 16:43:32,574 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 16:43:32,574 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 16:43:32,574 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 16:43:32,574 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 16:43:32,575 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 16:43:32,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 16:43:32,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 16:43:32,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 16:43:32,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 16:43:32,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:43:32,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 16:43:32,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 16:43:32,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 16:43:32,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 16:43:32,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 16:43:32,577 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 16:43:32,578 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 16:43:32,578 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 16:43:32,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 16:43:32,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53e3b4cf7a6885129025777f14c3b33a959debd694827832fbe127376cb0a5f9 [2024-10-13 16:43:32,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 16:43:32,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 16:43:32,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 16:43:32,822 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 16:43:32,822 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 16:43:32,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2024-10-13 16:43:34,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 16:43:34,531 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 16:43:34,531 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2024-10-13 16:43:34,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d149a1d1/4bd9c77f97694732a3d21acaf7be4642/FLAG199d01265 [2024-10-13 16:43:34,562 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d149a1d1/4bd9c77f97694732a3d21acaf7be4642 [2024-10-13 16:43:34,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 16:43:34,565 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 16:43:34,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 16:43:34,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 16:43:34,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 16:43:34,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:43:34" (1/1) ... [2024-10-13 16:43:34,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21dca6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:34, skipping insertion in model container [2024-10-13 16:43:34,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:43:34" (1/1) ... [2024-10-13 16:43:34,618 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 16:43:34,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:43:35,010 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 16:43:35,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 16:43:35,180 INFO L204 MainTranslator]: Completed translation [2024-10-13 16:43:35,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35 WrapperNode [2024-10-13 16:43:35,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 16:43:35,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 16:43:35,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 16:43:35,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 16:43:35,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (1/1) ... [2024-10-13 16:43:35,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (1/1) ... [2024-10-13 16:43:35,240 INFO L138 Inliner]: procedures = 271, calls = 50, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 236 [2024-10-13 16:43:35,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 16:43:35,241 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 16:43:35,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 16:43:35,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 16:43:35,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (1/1) ... [2024-10-13 16:43:35,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (1/1) ... [2024-10-13 16:43:35,254 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (1/1) ... [2024-10-13 16:43:35,268 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 5, 2, 11]. 55 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 6 writes are split as follows [0, 0, 1, 5]. [2024-10-13 16:43:35,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (1/1) ... [2024-10-13 16:43:35,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (1/1) ... [2024-10-13 16:43:35,276 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (1/1) ... [2024-10-13 16:43:35,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (1/1) ... [2024-10-13 16:43:35,282 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (1/1) ... [2024-10-13 16:43:35,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (1/1) ... [2024-10-13 16:43:35,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 16:43:35,289 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 16:43:35,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 16:43:35,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 16:43:35,290 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (1/1) ... [2024-10-13 16:43:35,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 16:43:35,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:43:35,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 16:43:35,319 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 [2024-10-13 16:43:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 16:43:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 16:43:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 16:43:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 16:43:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 16:43:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 16:43:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 16:43:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 16:43:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 16:43:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 16:43:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 16:43:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 16:43:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 16:43:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 16:43:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 16:43:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 16:43:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 16:43:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 16:43:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 16:43:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 16:43:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 16:43:35,383 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 16:43:35,533 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 16:43:35,535 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 16:43:35,824 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 16:43:35,825 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 16:43:35,950 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 16:43:35,950 INFO L314 CfgBuilder]: Removed 23 assume(true) statements. [2024-10-13 16:43:35,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:43:35 BoogieIcfgContainer [2024-10-13 16:43:35,951 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 16:43:35,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 16:43:35,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 16:43:35,962 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 16:43:35,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 04:43:34" (1/3) ... [2024-10-13 16:43:35,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb861a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:43:35, skipping insertion in model container [2024-10-13 16:43:35,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:43:35" (2/3) ... [2024-10-13 16:43:35,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb861a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 04:43:35, skipping insertion in model container [2024-10-13 16:43:35,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:43:35" (3/3) ... [2024-10-13 16:43:35,969 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2024-10-13 16:43:35,998 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 16:43:35,998 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-13 16:43:35,999 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 16:43:36,051 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 16:43:36,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 115 transitions, 237 flow [2024-10-13 16:43:36,121 INFO L124 PetriNetUnfolderBase]: 35/162 cut-off events. [2024-10-13 16:43:36,122 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:43:36,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 162 events. 35/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 639 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 100. Up to 8 conditions per place. [2024-10-13 16:43:36,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 115 transitions, 237 flow [2024-10-13 16:43:36,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 114 transitions, 235 flow [2024-10-13 16:43:36,139 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:43:36,146 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;@4e3e73c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:43:36,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-13 16:43:36,150 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:43:36,151 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:43:36,151 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:43:36,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:36,151 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:43:36,152 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)] === [2024-10-13 16:43:36,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash 654710, now seen corresponding path program 1 times [2024-10-13 16:43:36,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:36,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069079330] [2024-10-13 16:43:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:36,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:36,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:36,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069079330] [2024-10-13 16:43:36,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069079330] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:43:36,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:43:36,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:43:36,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556359621] [2024-10-13 16:43:36,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:43:36,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:43:36,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:36,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:43:36,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:43:36,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-13 16:43:36,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 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) [2024-10-13 16:43:36,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:36,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-13 16:43:36,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:36,788 INFO L124 PetriNetUnfolderBase]: 486/1500 cut-off events. [2024-10-13 16:43:36,788 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 16:43:36,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2481 conditions, 1500 events. 486/1500 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 10094 event pairs, 440 based on Foata normal form. 281/1596 useless extension candidates. Maximal degree in co-relation 2390. Up to 974 conditions per place. [2024-10-13 16:43:36,803 INFO L140 encePairwiseOnDemand]: 89/115 looper letters, 49 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2024-10-13 16:43:36,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 96 transitions, 303 flow [2024-10-13 16:43:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:43:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:43:36,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-10-13 16:43:36,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5456521739130434 [2024-10-13 16:43:36,816 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 235 flow. Second operand 4 states and 251 transitions. [2024-10-13 16:43:36,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 96 transitions, 303 flow [2024-10-13 16:43:36,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 303 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:43:36,824 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 219 flow [2024-10-13 16:43:36,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2024-10-13 16:43:36,829 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2024-10-13 16:43:36,829 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 219 flow [2024-10-13 16:43:36,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 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) [2024-10-13 16:43:36,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:36,830 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:43:36,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 16:43:36,830 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)] === [2024-10-13 16:43:36,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:36,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1969687330, now seen corresponding path program 1 times [2024-10-13 16:43:36,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:36,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140458606] [2024-10-13 16:43:36,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:36,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:36,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:36,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140458606] [2024-10-13 16:43:36,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140458606] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:43:36,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051402630] [2024-10-13 16:43:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:36,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:43:36,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:43:36,964 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) [2024-10-13 16:43:36,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 16:43:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:37,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:43:37,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:43:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:37,070 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:43:37,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051402630] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:43:37,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:43:37,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:43:37,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322055658] [2024-10-13 16:43:37,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:43:37,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:43:37,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:37,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:43:37,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:43:37,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-13 16:43:37,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:37,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:37,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-13 16:43:37,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:37,320 INFO L124 PetriNetUnfolderBase]: 486/1499 cut-off events. [2024-10-13 16:43:37,320 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 16:43:37,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2491 conditions, 1499 events. 486/1499 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 10095 event pairs, 440 based on Foata normal form. 1/1315 useless extension candidates. Maximal degree in co-relation 2473. Up to 969 conditions per place. [2024-10-13 16:43:37,326 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 45 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2024-10-13 16:43:37,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 317 flow [2024-10-13 16:43:37,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:43:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:43:37,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 316 transitions. [2024-10-13 16:43:37,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4579710144927536 [2024-10-13 16:43:37,333 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 219 flow. Second operand 6 states and 316 transitions. [2024-10-13 16:43:37,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 317 flow [2024-10-13 16:43:37,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 95 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:43:37,336 INFO L231 Difference]: Finished difference. Result has 102 places, 95 transitions, 225 flow [2024-10-13 16:43:37,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=102, PETRI_TRANSITIONS=95} [2024-10-13 16:43:37,337 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2024-10-13 16:43:37,337 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 95 transitions, 225 flow [2024-10-13 16:43:37,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:37,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:37,338 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:43:37,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 16:43:37,542 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 [2024-10-13 16:43:37,544 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)] === [2024-10-13 16:43:37,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:37,548 INFO L85 PathProgramCache]: Analyzing trace with hash -930764397, now seen corresponding path program 1 times [2024-10-13 16:43:37,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:37,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799238437] [2024-10-13 16:43:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:37,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:43:37,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:37,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799238437] [2024-10-13 16:43:37,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799238437] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:43:37,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:43:37,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:43:37,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51969097] [2024-10-13 16:43:37,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:43:37,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:43:37,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:37,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:43:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:43:37,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-13 16:43:37,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 95 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:37,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:37,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-13 16:43:37,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:37,762 INFO L124 PetriNetUnfolderBase]: 486/1498 cut-off events. [2024-10-13 16:43:37,762 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-13 16:43:37,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2493 conditions, 1498 events. 486/1498 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 10105 event pairs, 440 based on Foata normal form. 1/1315 useless extension candidates. Maximal degree in co-relation 2469. Up to 972 conditions per place. [2024-10-13 16:43:37,770 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 46 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2024-10-13 16:43:37,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 94 transitions, 321 flow [2024-10-13 16:43:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:43:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:43:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2024-10-13 16:43:37,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246376811594203 [2024-10-13 16:43:37,773 INFO L175 Difference]: Start difference. First operand has 102 places, 95 transitions, 225 flow. Second operand 3 states and 181 transitions. [2024-10-13 16:43:37,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 94 transitions, 321 flow [2024-10-13 16:43:37,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 299 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-13 16:43:37,777 INFO L231 Difference]: Finished difference. Result has 97 places, 94 transitions, 207 flow [2024-10-13 16:43:37,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=97, PETRI_TRANSITIONS=94} [2024-10-13 16:43:37,779 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2024-10-13 16:43:37,779 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 94 transitions, 207 flow [2024-10-13 16:43:37,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:37,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:37,780 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:43:37,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 16:43:37,780 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)] === [2024-10-13 16:43:37,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:37,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1113109505, now seen corresponding path program 1 times [2024-10-13 16:43:37,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:37,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939081595] [2024-10-13 16:43:37,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:37,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:37,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:37,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939081595] [2024-10-13 16:43:37,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939081595] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:43:37,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483144948] [2024-10-13 16:43:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:37,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:43:37,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:43:37,862 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) [2024-10-13 16:43:37,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 16:43:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:37,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:43:37,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:43:37,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:37,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:43:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:37,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483144948] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:43:37,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:43:37,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-13 16:43:37,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930761155] [2024-10-13 16:43:37,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:43:37,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 16:43:37,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:37,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 16:43:37,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 16:43:37,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-13 16:43:37,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 94 transitions, 207 flow. Second operand has 10 states, 10 states have (on average 45.3) internal successors, (453), 10 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:37,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:37,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-13 16:43:37,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:38,341 INFO L124 PetriNetUnfolderBase]: 486/1502 cut-off events. [2024-10-13 16:43:38,341 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-13 16:43:38,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 1502 events. 486/1502 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 10127 event pairs, 440 based on Foata normal form. 2/1321 useless extension candidates. Maximal degree in co-relation 2462. Up to 970 conditions per place. [2024-10-13 16:43:38,347 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 46 selfloop transitions, 7 changer transitions 0/97 dead transitions. [2024-10-13 16:43:38,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 97 transitions, 328 flow [2024-10-13 16:43:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:43:38,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:43:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 363 transitions. [2024-10-13 16:43:38,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4509316770186335 [2024-10-13 16:43:38,348 INFO L175 Difference]: Start difference. First operand has 97 places, 94 transitions, 207 flow. Second operand 7 states and 363 transitions. [2024-10-13 16:43:38,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 97 transitions, 328 flow [2024-10-13 16:43:38,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:43:38,352 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 233 flow [2024-10-13 16:43:38,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=233, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2024-10-13 16:43:38,353 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2024-10-13 16:43:38,354 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 233 flow [2024-10-13 16:43:38,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 45.3) internal successors, (453), 10 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:38,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:38,354 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-13 16:43:38,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 16:43:38,555 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 [2024-10-13 16:43:38,556 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)] === [2024-10-13 16:43:38,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash -711593217, now seen corresponding path program 2 times [2024-10-13 16:43:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:38,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954642168] [2024-10-13 16:43:38,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:38,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:43:38,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:38,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954642168] [2024-10-13 16:43:38,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954642168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:43:38,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:43:38,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:43:38,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935649896] [2024-10-13 16:43:38,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:43:38,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:43:38,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:38,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:43:38,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:43:38,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 115 [2024-10-13 16:43:38,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:38,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:38,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 115 [2024-10-13 16:43:38,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:38,842 INFO L124 PetriNetUnfolderBase]: 483/1378 cut-off events. [2024-10-13 16:43:38,842 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 16:43:38,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2378 conditions, 1378 events. 483/1378 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9164 event pairs, 0 based on Foata normal form. 21/1266 useless extension candidates. Maximal degree in co-relation 2339. Up to 912 conditions per place. [2024-10-13 16:43:38,848 INFO L140 encePairwiseOnDemand]: 109/115 looper letters, 92 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2024-10-13 16:43:38,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 136 transitions, 501 flow [2024-10-13 16:43:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:43:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:43:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2024-10-13 16:43:38,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-10-13 16:43:38,849 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 233 flow. Second operand 4 states and 265 transitions. [2024-10-13 16:43:38,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 136 transitions, 501 flow [2024-10-13 16:43:38,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 136 transitions, 497 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:43:38,853 INFO L231 Difference]: Finished difference. Result has 103 places, 95 transitions, 235 flow [2024-10-13 16:43:38,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2024-10-13 16:43:38,855 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2024-10-13 16:43:38,855 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 235 flow [2024-10-13 16:43:38,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:38,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:38,857 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:43:38,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 16:43:38,857 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-13 16:43:38,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:38,858 INFO L85 PathProgramCache]: Analyzing trace with hash -940060096, now seen corresponding path program 1 times [2024-10-13 16:43:38,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:38,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655547794] [2024-10-13 16:43:38,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:38,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:43:38,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:38,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655547794] [2024-10-13 16:43:38,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655547794] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:43:38,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:43:38,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:43:38,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060280328] [2024-10-13 16:43:38,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:43:38,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:43:38,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:38,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:43:38,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:43:38,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-13 16:43:38,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:38,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:38,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-13 16:43:38,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:39,120 INFO L124 PetriNetUnfolderBase]: 506/1511 cut-off events. [2024-10-13 16:43:39,121 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-10-13 16:43:39,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2581 conditions, 1511 events. 506/1511 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10147 event pairs, 378 based on Foata normal form. 23/1365 useless extension candidates. Maximal degree in co-relation 2542. Up to 875 conditions per place. [2024-10-13 16:43:39,126 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 95 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2024-10-13 16:43:39,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 138 transitions, 525 flow [2024-10-13 16:43:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:43:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:43:39,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 270 transitions. [2024-10-13 16:43:39,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-10-13 16:43:39,128 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 235 flow. Second operand 4 states and 270 transitions. [2024-10-13 16:43:39,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 138 transitions, 525 flow [2024-10-13 16:43:39,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 138 transitions, 515 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:43:39,130 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 233 flow [2024-10-13 16:43:39,130 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2024-10-13 16:43:39,131 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2024-10-13 16:43:39,131 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 233 flow [2024-10-13 16:43:39,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:39,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:39,131 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:43:39,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 16:43:39,132 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-13 16:43:39,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:39,132 INFO L85 PathProgramCache]: Analyzing trace with hash 885748387, now seen corresponding path program 1 times [2024-10-13 16:43:39,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:39,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800423588] [2024-10-13 16:43:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:39,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:43:39,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800423588] [2024-10-13 16:43:39,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800423588] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:43:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649744827] [2024-10-13 16:43:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:39,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:43:39,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:43:39,226 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) [2024-10-13 16:43:39,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 16:43:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:39,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 16:43:39,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:43:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:43:39,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:43:39,419 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:43:39,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649744827] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:43:39,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:43:39,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 16:43:39,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731627232] [2024-10-13 16:43:39,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:43:39,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:43:39,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:39,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:43:39,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:43:39,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-13 16:43:39,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 233 flow. Second operand has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:39,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:39,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-13 16:43:39,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:39,664 INFO L124 PetriNetUnfolderBase]: 485/1486 cut-off events. [2024-10-13 16:43:39,664 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-10-13 16:43:39,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 1486 events. 485/1486 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9841 event pairs, 440 based on Foata normal form. 4/1340 useless extension candidates. Maximal degree in co-relation 2503. Up to 946 conditions per place. [2024-10-13 16:43:39,670 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 46 selfloop transitions, 15 changer transitions 0/102 dead transitions. [2024-10-13 16:43:39,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 403 flow [2024-10-13 16:43:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:43:39,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:43:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 725 transitions. [2024-10-13 16:43:39,672 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42028985507246375 [2024-10-13 16:43:39,672 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 233 flow. Second operand 15 states and 725 transitions. [2024-10-13 16:43:39,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 403 flow [2024-10-13 16:43:39,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 102 transitions, 397 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:43:39,674 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 324 flow [2024-10-13 16:43:39,674 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=324, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2024-10-13 16:43:39,675 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 23 predicate places. [2024-10-13 16:43:39,675 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 324 flow [2024-10-13 16:43:39,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 45.22222222222222) internal successors, (814), 18 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:39,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:39,676 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:43:39,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 16:43:39,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:43:39,877 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-13 16:43:39,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:39,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2022234973, now seen corresponding path program 2 times [2024-10-13 16:43:39,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:39,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590800116] [2024-10-13 16:43:39,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:39,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:43:40,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:40,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590800116] [2024-10-13 16:43:40,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590800116] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:43:40,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907572335] [2024-10-13 16:43:40,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:43:40,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:43:40,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:43:40,100 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) [2024-10-13 16:43:40,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 16:43:40,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:43:40,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:43:40,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 16:43:40,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:43:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:43:40,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:43:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 16:43:40,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907572335] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:43:40,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:43:40,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-10-13 16:43:40,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371146655] [2024-10-13 16:43:40,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:43:40,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 16:43:40,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:40,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 16:43:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-13 16:43:40,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-10-13 16:43:40,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 324 flow. Second operand has 23 states, 23 states have (on average 45.21739130434783) internal successors, (1040), 23 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:40,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:40,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-10-13 16:43:40,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:40,673 INFO L124 PetriNetUnfolderBase]: 485/1486 cut-off events. [2024-10-13 16:43:40,673 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-10-13 16:43:40,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2565 conditions, 1486 events. 485/1486 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9748 event pairs, 440 based on Foata normal form. 3/1343 useless extension candidates. Maximal degree in co-relation 2430. Up to 947 conditions per place. [2024-10-13 16:43:40,679 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 46 selfloop transitions, 21 changer transitions 0/108 dead transitions. [2024-10-13 16:43:40,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 108 transitions, 512 flow [2024-10-13 16:43:40,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 16:43:40,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 16:43:40,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 994 transitions. [2024-10-13 16:43:40,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4115942028985507 [2024-10-13 16:43:40,682 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 324 flow. Second operand 21 states and 994 transitions. [2024-10-13 16:43:40,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 108 transitions, 512 flow [2024-10-13 16:43:40,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 108 transitions, 502 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 16:43:40,684 INFO L231 Difference]: Finished difference. Result has 136 places, 108 transitions, 425 flow [2024-10-13 16:43:40,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=425, PETRI_PLACES=136, PETRI_TRANSITIONS=108} [2024-10-13 16:43:40,685 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 42 predicate places. [2024-10-13 16:43:40,685 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 108 transitions, 425 flow [2024-10-13 16:43:40,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 45.21739130434783) internal successors, (1040), 23 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:40,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:40,686 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:43:40,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 16:43:40,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:43:40,890 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-13 16:43:40,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2024115397, now seen corresponding path program 3 times [2024-10-13 16:43:40,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:40,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12096745] [2024-10-13 16:43:40,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:40,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:43:40,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 16:43:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 16:43:40,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 16:43:40,966 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 16:43:40,967 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-13 16:43:40,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2024-10-13 16:43:40,972 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2024-10-13 16:43:40,972 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2024-10-13 16:43:40,972 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2024-10-13 16:43:40,972 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2024-10-13 16:43:40,972 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2024-10-13 16:43:40,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2024-10-13 16:43:40,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2024-10-13 16:43:40,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2024-10-13 16:43:40,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2024-10-13 16:43:40,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2024-10-13 16:43:40,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2024-10-13 16:43:40,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2024-10-13 16:43:40,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2024-10-13 16:43:40,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2024-10-13 16:43:40,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2024-10-13 16:43:40,973 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2024-10-13 16:43:40,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2024-10-13 16:43:40,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2024-10-13 16:43:40,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2024-10-13 16:43:40,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2024-10-13 16:43:40,978 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2024-10-13 16:43:40,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 16:43:40,979 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2024-10-13 16:43:40,981 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 16:43:40,981 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 16:43:41,010 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 16:43:41,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 165 transitions, 346 flow [2024-10-13 16:43:41,027 INFO L124 PetriNetUnfolderBase]: 59/278 cut-off events. [2024-10-13 16:43:41,027 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 16:43:41,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 278 events. 59/278 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1290 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 164. Up to 12 conditions per place. [2024-10-13 16:43:41,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 165 transitions, 346 flow [2024-10-13 16:43:41,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 165 transitions, 346 flow [2024-10-13 16:43:41,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 16:43:41,032 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e3e73c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 16:43:41,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-13 16:43:41,033 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 16:43:41,033 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-13 16:43:41,033 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 16:43:41,033 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:41,033 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 16:43:41,033 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-13 16:43:41,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:41,034 INFO L85 PathProgramCache]: Analyzing trace with hash 818555, now seen corresponding path program 1 times [2024-10-13 16:43:41,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:41,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160803489] [2024-10-13 16:43:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:41,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:41,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:41,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160803489] [2024-10-13 16:43:41,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160803489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:43:41,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:43:41,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:43:41,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711905691] [2024-10-13 16:43:41,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:43:41,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:43:41,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:41,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:43:41,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:43:41,086 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2024-10-13 16:43:41,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 165 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:41,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:41,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2024-10-13 16:43:41,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:44,005 INFO L124 PetriNetUnfolderBase]: 20921/44082 cut-off events. [2024-10-13 16:43:44,005 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-10-13 16:43:44,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75381 conditions, 44082 events. 20921/44082 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 449962 event pairs, 19440 based on Foata normal form. 9270/48624 useless extension candidates. Maximal degree in co-relation 59170. Up to 31185 conditions per place. [2024-10-13 16:43:44,200 INFO L140 encePairwiseOnDemand]: 129/165 looper letters, 72 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2024-10-13 16:43:44,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 137 transitions, 440 flow [2024-10-13 16:43:44,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:43:44,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:43:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 356 transitions. [2024-10-13 16:43:44,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2024-10-13 16:43:44,202 INFO L175 Difference]: Start difference. First operand has 134 places, 165 transitions, 346 flow. Second operand 4 states and 356 transitions. [2024-10-13 16:43:44,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 137 transitions, 440 flow [2024-10-13 16:43:44,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 137 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 16:43:44,204 INFO L231 Difference]: Finished difference. Result has 139 places, 137 transitions, 310 flow [2024-10-13 16:43:44,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=139, PETRI_TRANSITIONS=137} [2024-10-13 16:43:44,205 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 5 predicate places. [2024-10-13 16:43:44,205 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 137 transitions, 310 flow [2024-10-13 16:43:44,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:44,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:44,206 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 16:43:44,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 16:43:44,206 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-13 16:43:44,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:44,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1383384386, now seen corresponding path program 1 times [2024-10-13 16:43:44,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:44,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373508943] [2024-10-13 16:43:44,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:44,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:44,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:44,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373508943] [2024-10-13 16:43:44,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373508943] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:43:44,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217083312] [2024-10-13 16:43:44,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:44,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:43:44,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:43:44,245 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) [2024-10-13 16:43:44,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 16:43:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:44,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 16:43:44,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:43:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:44,433 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:43:44,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217083312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:43:44,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:43:44,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-13 16:43:44,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190817291] [2024-10-13 16:43:44,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:43:44,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 16:43:44,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:44,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 16:43:44,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 16:43:44,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2024-10-13 16:43:44,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 137 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:44,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:44,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2024-10-13 16:43:44,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:47,364 INFO L124 PetriNetUnfolderBase]: 20921/44081 cut-off events. [2024-10-13 16:43:47,364 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-13 16:43:47,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75391 conditions, 44081 events. 20921/44081 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 449849 event pairs, 19440 based on Foata normal form. 1/39354 useless extension candidates. Maximal degree in co-relation 75372. Up to 31180 conditions per place. [2024-10-13 16:43:47,607 INFO L140 encePairwiseOnDemand]: 160/165 looper letters, 68 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2024-10-13 16:43:47,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 454 flow [2024-10-13 16:43:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 16:43:47,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 16:43:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 447 transitions. [2024-10-13 16:43:47,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45151515151515154 [2024-10-13 16:43:47,610 INFO L175 Difference]: Start difference. First operand has 139 places, 137 transitions, 310 flow. Second operand 6 states and 447 transitions. [2024-10-13 16:43:47,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 454 flow [2024-10-13 16:43:47,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 136 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:43:47,612 INFO L231 Difference]: Finished difference. Result has 142 places, 136 transitions, 316 flow [2024-10-13 16:43:47,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=316, PETRI_PLACES=142, PETRI_TRANSITIONS=136} [2024-10-13 16:43:47,613 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 8 predicate places. [2024-10-13 16:43:47,613 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 136 transitions, 316 flow [2024-10-13 16:43:47,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:47,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:47,614 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-13 16:43:47,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 16:43:47,817 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,SelfDestructingSolverStorable10 [2024-10-13 16:43:47,818 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-13 16:43:47,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash 64757848, now seen corresponding path program 1 times [2024-10-13 16:43:47,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:47,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082215134] [2024-10-13 16:43:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:47,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 16:43:47,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:47,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082215134] [2024-10-13 16:43:47,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082215134] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:43:47,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:43:47,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 16:43:47,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567565807] [2024-10-13 16:43:47,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:43:47,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 16:43:47,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:47,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 16:43:47,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 16:43:47,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2024-10-13 16:43:47,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 136 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:47,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:47,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2024-10-13 16:43:47,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:50,604 INFO L124 PetriNetUnfolderBase]: 20921/44080 cut-off events. [2024-10-13 16:43:50,604 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-10-13 16:43:50,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75393 conditions, 44080 events. 20921/44080 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 449976 event pairs, 19440 based on Foata normal form. 1/39354 useless extension candidates. Maximal degree in co-relation 75368. Up to 31183 conditions per place. [2024-10-13 16:43:50,943 INFO L140 encePairwiseOnDemand]: 162/165 looper letters, 69 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2024-10-13 16:43:50,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 135 transitions, 458 flow [2024-10-13 16:43:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 16:43:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 16:43:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2024-10-13 16:43:50,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2024-10-13 16:43:50,949 INFO L175 Difference]: Start difference. First operand has 142 places, 136 transitions, 316 flow. Second operand 3 states and 258 transitions. [2024-10-13 16:43:50,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 135 transitions, 458 flow [2024-10-13 16:43:50,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 135 transitions, 436 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-13 16:43:50,951 INFO L231 Difference]: Finished difference. Result has 137 places, 135 transitions, 298 flow [2024-10-13 16:43:50,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=137, PETRI_TRANSITIONS=135} [2024-10-13 16:43:50,956 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 3 predicate places. [2024-10-13 16:43:50,957 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 135 transitions, 298 flow [2024-10-13 16:43:50,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:50,957 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:50,957 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:43:50,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 16:43:50,957 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-13 16:43:50,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:50,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2101079636, now seen corresponding path program 1 times [2024-10-13 16:43:50,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:50,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126468823] [2024-10-13 16:43:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:50,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:51,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:51,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126468823] [2024-10-13 16:43:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126468823] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:43:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368202309] [2024-10-13 16:43:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:51,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:43:51,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:43:51,031 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) [2024-10-13 16:43:51,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 16:43:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:51,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:43:51,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:43:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:51,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:43:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 16:43:51,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368202309] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:43:51,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:43:51,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-13 16:43:51,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665872913] [2024-10-13 16:43:51,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:43:51,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 16:43:51,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:51,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 16:43:51,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 16:43:51,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2024-10-13 16:43:51,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 135 transitions, 298 flow. Second operand has 10 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:51,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:51,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2024-10-13 16:43:51,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:54,202 INFO L124 PetriNetUnfolderBase]: 20921/44084 cut-off events. [2024-10-13 16:43:54,202 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2024-10-13 16:43:54,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75396 conditions, 44084 events. 20921/44084 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 449980 event pairs, 19440 based on Foata normal form. 2/39360 useless extension candidates. Maximal degree in co-relation 75361. Up to 31181 conditions per place. [2024-10-13 16:43:54,367 INFO L140 encePairwiseOnDemand]: 161/165 looper letters, 69 selfloop transitions, 7 changer transitions 0/138 dead transitions. [2024-10-13 16:43:54,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 138 transitions, 465 flow [2024-10-13 16:43:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 16:43:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 16:43:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 512 transitions. [2024-10-13 16:43:54,370 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4432900432900433 [2024-10-13 16:43:54,370 INFO L175 Difference]: Start difference. First operand has 137 places, 135 transitions, 298 flow. Second operand 7 states and 512 transitions. [2024-10-13 16:43:54,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 138 transitions, 465 flow [2024-10-13 16:43:54,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 451 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:43:54,372 INFO L231 Difference]: Finished difference. Result has 143 places, 138 transitions, 324 flow [2024-10-13 16:43:54,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=143, PETRI_TRANSITIONS=138} [2024-10-13 16:43:54,373 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 9 predicate places. [2024-10-13 16:43:54,373 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 138 transitions, 324 flow [2024-10-13 16:43:54,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:54,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:54,373 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-13 16:43:54,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 16:43:54,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:43:54,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-13 16:43:54,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash 775482228, now seen corresponding path program 2 times [2024-10-13 16:43:54,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:54,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538844414] [2024-10-13 16:43:54,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:54,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:43:54,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:54,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538844414] [2024-10-13 16:43:54,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538844414] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:43:54,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:43:54,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:43:54,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12859039] [2024-10-13 16:43:54,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:43:54,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:43:54,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:54,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:43:54,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:43:54,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 165 [2024-10-13 16:43:54,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 138 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:54,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:54,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 165 [2024-10-13 16:43:54,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:43:58,012 INFO L124 PetriNetUnfolderBase]: 23016/46825 cut-off events. [2024-10-13 16:43:58,012 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-10-13 16:43:58,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81493 conditions, 46825 events. 23016/46825 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 1226. Compared 469792 event pairs, 10580 based on Foata normal form. 21/41770 useless extension candidates. Maximal degree in co-relation 81453. Up to 34473 conditions per place. [2024-10-13 16:43:58,208 INFO L140 encePairwiseOnDemand]: 159/165 looper letters, 119 selfloop transitions, 3 changer transitions 0/181 dead transitions. [2024-10-13 16:43:58,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 181 transitions, 654 flow [2024-10-13 16:43:58,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:43:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:43:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 364 transitions. [2024-10-13 16:43:58,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5515151515151515 [2024-10-13 16:43:58,210 INFO L175 Difference]: Start difference. First operand has 143 places, 138 transitions, 324 flow. Second operand 4 states and 364 transitions. [2024-10-13 16:43:58,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 181 transitions, 654 flow [2024-10-13 16:43:58,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 181 transitions, 650 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 16:43:58,213 INFO L231 Difference]: Finished difference. Result has 146 places, 140 transitions, 344 flow [2024-10-13 16:43:58,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=146, PETRI_TRANSITIONS=140} [2024-10-13 16:43:58,214 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 12 predicate places. [2024-10-13 16:43:58,214 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 140 transitions, 344 flow [2024-10-13 16:43:58,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:58,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:43:58,214 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:43:58,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 16:43:58,214 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-13 16:43:58,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:43:58,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2084661739, now seen corresponding path program 1 times [2024-10-13 16:43:58,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:43:58,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348674999] [2024-10-13 16:43:58,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:43:58,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:43:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:43:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:43:58,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:43:58,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348674999] [2024-10-13 16:43:58,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348674999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:43:58,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:43:58,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:43:58,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202667293] [2024-10-13 16:43:58,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:43:58,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:43:58,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:43:58,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:43:58,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:43:58,281 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2024-10-13 16:43:58,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 140 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:43:58,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:43:58,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2024-10-13 16:43:58,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:01,444 INFO L124 PetriNetUnfolderBase]: 21407/40857 cut-off events. [2024-10-13 16:44:01,444 INFO L125 PetriNetUnfolderBase]: For 1134/2063 co-relation queries the response was YES. [2024-10-13 16:44:01,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74117 conditions, 40857 events. 21407/40857 cut-off events. For 1134/2063 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 395656 event pairs, 440 based on Foata normal form. 526/37645 useless extension candidates. Maximal degree in co-relation 74076. Up to 28198 conditions per place. [2024-10-13 16:44:01,658 INFO L140 encePairwiseOnDemand]: 161/165 looper letters, 167 selfloop transitions, 3 changer transitions 0/231 dead transitions. [2024-10-13 16:44:01,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 231 transitions, 896 flow [2024-10-13 16:44:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:01,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 411 transitions. [2024-10-13 16:44:01,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6227272727272727 [2024-10-13 16:44:01,660 INFO L175 Difference]: Start difference. First operand has 146 places, 140 transitions, 344 flow. Second operand 4 states and 411 transitions. [2024-10-13 16:44:01,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 231 transitions, 896 flow [2024-10-13 16:44:01,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 231 transitions, 892 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 16:44:01,666 INFO L231 Difference]: Finished difference. Result has 147 places, 139 transitions, 346 flow [2024-10-13 16:44:01,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=346, PETRI_PLACES=147, PETRI_TRANSITIONS=139} [2024-10-13 16:44:01,666 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 13 predicate places. [2024-10-13 16:44:01,667 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 139 transitions, 346 flow [2024-10-13 16:44:01,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:01,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:01,667 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:01,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 16:44:01,667 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-13 16:44:01,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash -200003581, now seen corresponding path program 1 times [2024-10-13 16:44:01,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:01,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60938507] [2024-10-13 16:44:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:01,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-13 16:44:01,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:01,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60938507] [2024-10-13 16:44:01,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60938507] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:01,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:01,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:44:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289537062] [2024-10-13 16:44:01,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:01,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:01,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:01,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:01,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:01,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2024-10-13 16:44:01,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 139 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:01,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:01,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2024-10-13 16:44:01,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:04,816 INFO L124 PetriNetUnfolderBase]: 20844/43253 cut-off events. [2024-10-13 16:44:04,817 INFO L125 PetriNetUnfolderBase]: For 2073/2949 co-relation queries the response was YES. [2024-10-13 16:44:04,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77022 conditions, 43253 events. 20844/43253 cut-off events. For 2073/2949 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 437036 event pairs, 15754 based on Foata normal form. 525/39532 useless extension candidates. Maximal degree in co-relation 76981. Up to 26761 conditions per place. [2024-10-13 16:44:05,072 INFO L140 encePairwiseOnDemand]: 161/165 looper letters, 166 selfloop transitions, 3 changer transitions 0/230 dead transitions. [2024-10-13 16:44:05,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 230 transitions, 894 flow [2024-10-13 16:44:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:05,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:05,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 410 transitions. [2024-10-13 16:44:05,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-10-13 16:44:05,075 INFO L175 Difference]: Start difference. First operand has 147 places, 139 transitions, 346 flow. Second operand 4 states and 410 transitions. [2024-10-13 16:44:05,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 230 transitions, 894 flow [2024-10-13 16:44:05,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 230 transitions, 888 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:44:05,081 INFO L231 Difference]: Finished difference. Result has 146 places, 138 transitions, 344 flow [2024-10-13 16:44:05,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=344, PETRI_PLACES=146, PETRI_TRANSITIONS=138} [2024-10-13 16:44:05,081 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 12 predicate places. [2024-10-13 16:44:05,082 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 138 transitions, 344 flow [2024-10-13 16:44:05,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:05,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:05,082 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:05,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 16:44:05,082 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-13 16:44:05,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash -281275738, now seen corresponding path program 1 times [2024-10-13 16:44:05,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:05,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352433142] [2024-10-13 16:44:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:05,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:44:05,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:05,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352433142] [2024-10-13 16:44:05,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352433142] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:05,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731162513] [2024-10-13 16:44:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:05,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:05,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:05,160 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) [2024-10-13 16:44:05,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 16:44:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:05,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 16:44:05,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:05,257 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:44:05,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:44:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:44:05,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731162513] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:44:05,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:44:05,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 16:44:05,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991738232] [2024-10-13 16:44:05,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:44:05,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 16:44:05,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:05,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 16:44:05,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-13 16:44:05,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2024-10-13 16:44:05,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 344 flow. Second operand has 18 states, 18 states have (on average 63.27777777777778) internal successors, (1139), 18 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:05,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:05,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2024-10-13 16:44:05,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:08,564 INFO L124 PetriNetUnfolderBase]: 20919/44308 cut-off events. [2024-10-13 16:44:08,564 INFO L125 PetriNetUnfolderBase]: For 2589/3459 co-relation queries the response was YES. [2024-10-13 16:44:08,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78137 conditions, 44308 events. 20919/44308 cut-off events. For 2589/3459 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 453349 event pairs, 19440 based on Foata normal form. 22/39995 useless extension candidates. Maximal degree in co-relation 78060. Up to 31203 conditions per place. [2024-10-13 16:44:08,819 INFO L140 encePairwiseOnDemand]: 161/165 looper letters, 70 selfloop transitions, 15 changer transitions 0/146 dead transitions. [2024-10-13 16:44:08,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 146 transitions, 562 flow [2024-10-13 16:44:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 16:44:08,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 16:44:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1018 transitions. [2024-10-13 16:44:08,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4113131313131313 [2024-10-13 16:44:08,824 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 344 flow. Second operand 15 states and 1018 transitions. [2024-10-13 16:44:08,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 146 transitions, 562 flow [2024-10-13 16:44:08,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 146 transitions, 556 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 16:44:08,828 INFO L231 Difference]: Finished difference. Result has 161 places, 146 transitions, 435 flow [2024-10-13 16:44:08,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=435, PETRI_PLACES=161, PETRI_TRANSITIONS=146} [2024-10-13 16:44:08,829 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 27 predicate places. [2024-10-13 16:44:08,829 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 146 transitions, 435 flow [2024-10-13 16:44:08,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 63.27777777777778) internal successors, (1139), 18 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:08,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:08,830 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:08,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 16:44:09,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:09,036 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-13 16:44:09,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:09,037 INFO L85 PathProgramCache]: Analyzing trace with hash 882673766, now seen corresponding path program 2 times [2024-10-13 16:44:09,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:09,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393666331] [2024-10-13 16:44:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:09,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:44:09,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:09,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393666331] [2024-10-13 16:44:09,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393666331] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:09,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306379961] [2024-10-13 16:44:09,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 16:44:09,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:09,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:09,431 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) [2024-10-13 16:44:09,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 16:44:09,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 16:44:09,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:44:09,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 16:44:09,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:44:09,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 16:44:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 16:44:09,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306379961] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 16:44:09,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 16:44:09,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2024-10-13 16:44:09,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352351644] [2024-10-13 16:44:09,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 16:44:09,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 16:44:09,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:09,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 16:44:09,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-13 16:44:09,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 165 [2024-10-13 16:44:09,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 146 transitions, 435 flow. Second operand has 23 states, 23 states have (on average 63.26086956521739) internal successors, (1455), 23 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:09,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:09,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 165 [2024-10-13 16:44:09,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:13,340 INFO L124 PetriNetUnfolderBase]: 20919/44317 cut-off events. [2024-10-13 16:44:13,340 INFO L125 PetriNetUnfolderBase]: For 1163/2033 co-relation queries the response was YES. [2024-10-13 16:44:13,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76680 conditions, 44317 events. 20919/44317 cut-off events. For 1163/2033 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 453270 event pairs, 19440 based on Foata normal form. 21/40003 useless extension candidates. Maximal degree in co-relation 76543. Up to 31203 conditions per place. [2024-10-13 16:44:13,632 INFO L140 encePairwiseOnDemand]: 161/165 looper letters, 70 selfloop transitions, 21 changer transitions 0/152 dead transitions. [2024-10-13 16:44:13,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 152 transitions, 671 flow [2024-10-13 16:44:13,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 16:44:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 16:44:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1395 transitions. [2024-10-13 16:44:13,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-10-13 16:44:13,635 INFO L175 Difference]: Start difference. First operand has 161 places, 146 transitions, 435 flow. Second operand 21 states and 1395 transitions. [2024-10-13 16:44:13,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 152 transitions, 671 flow [2024-10-13 16:44:13,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 152 transitions, 661 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-13 16:44:13,639 INFO L231 Difference]: Finished difference. Result has 180 places, 152 transitions, 536 flow [2024-10-13 16:44:13,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=536, PETRI_PLACES=180, PETRI_TRANSITIONS=152} [2024-10-13 16:44:13,639 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 46 predicate places. [2024-10-13 16:44:13,639 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 152 transitions, 536 flow [2024-10-13 16:44:13,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 63.26086956521739) internal successors, (1455), 23 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:13,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:13,640 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:13,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 16:44:13,844 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,SelfDestructingSolverStorable17 [2024-10-13 16:44:13,845 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-13 16:44:13,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1030794019, now seen corresponding path program 3 times [2024-10-13 16:44:13,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:13,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056928003] [2024-10-13 16:44:13,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:13,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:44:13,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:13,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056928003] [2024-10-13 16:44:13,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056928003] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 16:44:13,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001554245] [2024-10-13 16:44:13,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 16:44:13,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:13,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 16:44:13,940 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) [2024-10-13 16:44:13,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 16:44:14,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 16:44:14,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 16:44:14,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 16:44:14,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 16:44:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-10-13 16:44:14,078 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 16:44:14,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001554245] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:14,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 16:44:14,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-13 16:44:14,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237405686] [2024-10-13 16:44:14,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:14,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 16:44:14,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:14,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 16:44:14,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 16:44:14,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 165 [2024-10-13 16:44:14,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 152 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:14,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:14,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 165 [2024-10-13 16:44:14,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 16:44:17,797 INFO L124 PetriNetUnfolderBase]: 23079/43735 cut-off events. [2024-10-13 16:44:17,797 INFO L125 PetriNetUnfolderBase]: For 1212/1212 co-relation queries the response was YES. [2024-10-13 16:44:17,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80480 conditions, 43735 events. 23079/43735 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 415503 event pairs, 2140 based on Foata normal form. 441/40215 useless extension candidates. Maximal degree in co-relation 80319. Up to 27099 conditions per place. [2024-10-13 16:44:18,080 INFO L140 encePairwiseOnDemand]: 160/165 looper letters, 169 selfloop transitions, 6 changer transitions 0/231 dead transitions. [2024-10-13 16:44:18,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 231 transitions, 1042 flow [2024-10-13 16:44:18,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 16:44:18,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 16:44:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2024-10-13 16:44:18,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5984848484848485 [2024-10-13 16:44:18,082 INFO L175 Difference]: Start difference. First operand has 180 places, 152 transitions, 536 flow. Second operand 4 states and 395 transitions. [2024-10-13 16:44:18,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 231 transitions, 1042 flow [2024-10-13 16:44:18,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 231 transitions, 999 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-10-13 16:44:18,090 INFO L231 Difference]: Finished difference. Result has 169 places, 151 transitions, 501 flow [2024-10-13 16:44:18,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=501, PETRI_PLACES=169, PETRI_TRANSITIONS=151} [2024-10-13 16:44:18,091 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, 35 predicate places. [2024-10-13 16:44:18,091 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 151 transitions, 501 flow [2024-10-13 16:44:18,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:18,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 16:44:18,091 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 16:44:18,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 16:44:18,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 16:44:18,292 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-13 16:44:18,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 16:44:18,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1889844393, now seen corresponding path program 1 times [2024-10-13 16:44:18,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 16:44:18,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400335767] [2024-10-13 16:44:18,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 16:44:18,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 16:44:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 16:44:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-10-13 16:44:18,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 16:44:18,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400335767] [2024-10-13 16:44:18,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400335767] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 16:44:18,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 16:44:18,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 16:44:18,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554706422] [2024-10-13 16:44:18,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 16:44:18,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 16:44:18,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 16:44:18,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 16:44:18,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 16:44:18,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 165 [2024-10-13 16:44:18,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 151 transitions, 501 flow. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 16:44:18,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 16:44:18,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 165 [2024-10-13 16:44:18,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand