./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c4f91361 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 ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 16:10:27,786 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 16:10:27,851 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 16:10:27,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 16:10:27,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 16:10:27,882 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 16:10:27,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 16:10:27,883 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 16:10:27,883 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 16:10:27,883 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 16:10:27,884 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 16:10:27,884 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 16:10:27,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 16:10:27,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 16:10:27,885 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 16:10:27,900 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 16:10:27,901 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 16:10:27,901 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 16:10:27,901 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 16:10:27,902 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 16:10:27,902 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 16:10:27,902 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 16:10:27,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 16:10:27,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 16:10:27,903 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 16:10:27,903 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 16:10:27,904 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 16:10:27,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 16:10:27,904 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 16:10:27,904 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 16:10:27,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 16:10:27,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 16:10:27,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 16:10:27,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 16:10:27,906 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 16:10:27,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 16:10:27,906 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 16:10:27,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 16:10:27,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 16:10:27,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 16:10:27,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 16:10:27,907 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 16:10:27,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 16:10:27,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 16:10:27,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2023-11-23 16:10:28,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 16:10:28,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 16:10:28,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 16:10:28,143 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 16:10:28,143 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 16:10:28,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-23 16:10:29,191 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 16:10:29,397 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 16:10:29,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-23 16:10:29,415 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86ed09c8/d34ae0ffe58042a79128887d5409817d/FLAG0a0b66bf6 [2023-11-23 16:10:29,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86ed09c8/d34ae0ffe58042a79128887d5409817d [2023-11-23 16:10:29,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 16:10:29,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 16:10:29,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 16:10:29,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 16:10:29,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 16:10:29,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:29" (1/1) ... [2023-11-23 16:10:29,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5368c6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:29, skipping insertion in model container [2023-11-23 16:10:29,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:29" (1/1) ... [2023-11-23 16:10:29,497 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 16:10:29,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 16:10:29,928 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 16:10:29,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 16:10:30,036 INFO L206 MainTranslator]: Completed translation [2023-11-23 16:10:30,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30 WrapperNode [2023-11-23 16:10:30,036 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 16:10:30,037 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 16:10:30,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 16:10:30,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 16:10:30,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (1/1) ... [2023-11-23 16:10:30,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (1/1) ... [2023-11-23 16:10:30,114 INFO L138 Inliner]: procedures = 365, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-23 16:10:30,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 16:10:30,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 16:10:30,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 16:10:30,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 16:10:30,128 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (1/1) ... [2023-11-23 16:10:30,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (1/1) ... [2023-11-23 16:10:30,130 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (1/1) ... [2023-11-23 16:10:30,144 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2023-11-23 16:10:30,145 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (1/1) ... [2023-11-23 16:10:30,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (1/1) ... [2023-11-23 16:10:30,149 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (1/1) ... [2023-11-23 16:10:30,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (1/1) ... [2023-11-23 16:10:30,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (1/1) ... [2023-11-23 16:10:30,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (1/1) ... [2023-11-23 16:10:30,156 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 16:10:30,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 16:10:30,157 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 16:10:30,157 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 16:10:30,158 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (1/1) ... [2023-11-23 16:10:30,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 16:10:30,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:10:30,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 16:10:30,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 16:10:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 16:10:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 16:10:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 16:10:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 16:10:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 16:10:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 16:10:30,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 16:10:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 16:10:30,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 16:10:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 16:10:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 16:10:30,288 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-11-23 16:10:30,288 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-11-23 16:10:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 16:10:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 16:10:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 16:10:30,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 16:10:30,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 16:10:30,290 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 16:10:30,433 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 16:10:30,435 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 16:10:30,622 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 16:10:30,703 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 16:10:30,703 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 16:10:30,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:30 BoogieIcfgContainer [2023-11-23 16:10:30,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 16:10:30,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 16:10:30,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 16:10:30,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 16:10:30,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:10:29" (1/3) ... [2023-11-23 16:10:30,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d61d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:30, skipping insertion in model container [2023-11-23 16:10:30,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:30" (2/3) ... [2023-11-23 16:10:30,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d61d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:30, skipping insertion in model container [2023-11-23 16:10:30,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:30" (3/3) ... [2023-11-23 16:10:30,711 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-11-23 16:10:30,717 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 16:10:30,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 16:10:30,725 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-23 16:10:30,725 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 16:10:30,749 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-23 16:10:30,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 35 transitions, 77 flow [2023-11-23 16:10:30,803 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2023-11-23 16:10:30,803 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 16:10:30,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 34 events. 2/34 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-23 16:10:30,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 35 transitions, 77 flow [2023-11-23 16:10:30,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 32 transitions, 67 flow [2023-11-23 16:10:30,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 16:10:30,820 INFO L357 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, mHoare=true, 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;@1c502ac3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 16:10:30,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-23 16:10:30,824 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 16:10:30,824 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-23 16:10:30,824 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 16:10:30,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:30,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:30,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:30,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:30,829 INFO L85 PathProgramCache]: Analyzing trace with hash -146143648, now seen corresponding path program 1 times [2023-11-23 16:10:30,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:30,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814428495] [2023-11-23 16:10:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:30,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:31,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:31,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814428495] [2023-11-23 16:10:31,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814428495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:31,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:10:31,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 16:10:31,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390260010] [2023-11-23 16:10:31,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:31,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 16:10:31,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:31,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 16:10:31,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 16:10:31,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2023-11-23 16:10:31,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-11-23 16:10:31,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:31,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2023-11-23 16:10:31,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:31,206 INFO L124 PetriNetUnfolderBase]: 92/257 cut-off events. [2023-11-23 16:10:31,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 16:10:31,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 257 events. 92/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1169 event pairs, 22 based on Foata normal form. 4/232 useless extension candidates. Maximal degree in co-relation 437. Up to 152 conditions per place. [2023-11-23 16:10:31,209 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 25 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-11-23 16:10:31,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 141 flow [2023-11-23 16:10:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 16:10:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 16:10:31,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-23 16:10:31,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-23 16:10:31,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-23 16:10:31,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-23 16:10:31,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:31,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-23 16:10:31,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2023-11-23 16:10:31,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:31,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:31,226 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 67 flow. Second operand 3 states and 72 transitions. [2023-11-23 16:10:31,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 141 flow [2023-11-23 16:10:31,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 16:10:31,231 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 87 flow [2023-11-23 16:10:31,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-11-23 16:10:31,236 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-11-23 16:10:31,236 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 87 flow [2023-11-23 16:10:31,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-11-23 16:10:31,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:31,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:31,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 16:10:31,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:31,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:31,238 INFO L85 PathProgramCache]: Analyzing trace with hash -122003393, now seen corresponding path program 1 times [2023-11-23 16:10:31,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:31,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568447415] [2023-11-23 16:10:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:31,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:31,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:31,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568447415] [2023-11-23 16:10:31,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568447415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:31,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:10:31,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 16:10:31,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687598043] [2023-11-23 16:10:31,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:31,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 16:10:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:31,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 16:10:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 16:10:31,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 16:10:31,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2023-11-23 16:10:31,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:31,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 16:10:31,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:31,503 INFO L124 PetriNetUnfolderBase]: 118/307 cut-off events. [2023-11-23 16:10:31,503 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-23 16:10:31,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 307 events. 118/307 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1464 event pairs, 40 based on Foata normal form. 24/303 useless extension candidates. Maximal degree in co-relation 607. Up to 195 conditions per place. [2023-11-23 16:10:31,506 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 37 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-11-23 16:10:31,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 224 flow [2023-11-23 16:10:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 16:10:31,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 16:10:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2023-11-23 16:10:31,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2023-11-23 16:10:31,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 107 transitions. [2023-11-23 16:10:31,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 107 transitions. [2023-11-23 16:10:31,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:31,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 107 transitions. [2023-11-23 16:10:31,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2023-11-23 16:10:31,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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) [2023-11-23 16:10:31,517 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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) [2023-11-23 16:10:31,517 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 87 flow. Second operand 5 states and 107 transitions. [2023-11-23 16:10:31,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 224 flow [2023-11-23 16:10:31,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 16:10:31,519 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 126 flow [2023-11-23 16:10:31,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-11-23 16:10:31,522 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-11-23 16:10:31,522 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 126 flow [2023-11-23 16:10:31,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2023-11-23 16:10:31,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:31,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:31,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 16:10:31,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:31,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:31,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1666765546, now seen corresponding path program 1 times [2023-11-23 16:10:31,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:31,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105072041] [2023-11-23 16:10:31,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:31,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:31,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:31,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105072041] [2023-11-23 16:10:31,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105072041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:31,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:10:31,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:10:31,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617101205] [2023-11-23 16:10:31,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:31,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 16:10:31,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:31,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 16:10:31,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 16:10:31,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2023-11-23 16:10:31,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-11-23 16:10:31,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:31,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2023-11-23 16:10:31,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:31,786 INFO L124 PetriNetUnfolderBase]: 142/380 cut-off events. [2023-11-23 16:10:31,787 INFO L125 PetriNetUnfolderBase]: For 184/212 co-relation queries the response was YES. [2023-11-23 16:10:31,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 380 events. 142/380 cut-off events. For 184/212 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1749 event pairs, 45 based on Foata normal form. 21/379 useless extension candidates. Maximal degree in co-relation 823. Up to 172 conditions per place. [2023-11-23 16:10:31,790 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-11-23 16:10:31,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 307 flow [2023-11-23 16:10:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 16:10:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 16:10:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2023-11-23 16:10:31,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7071428571428572 [2023-11-23 16:10:31,792 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 99 transitions. [2023-11-23 16:10:31,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 99 transitions. [2023-11-23 16:10:31,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:31,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 99 transitions. [2023-11-23 16:10:31,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2023-11-23 16:10:31,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:31,794 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:31,794 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 126 flow. Second operand 4 states and 99 transitions. [2023-11-23 16:10:31,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 307 flow [2023-11-23 16:10:31,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 62 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 16:10:31,797 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 142 flow [2023-11-23 16:10:31,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-11-23 16:10:31,798 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-11-23 16:10:31,798 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 142 flow [2023-11-23 16:10:31,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-11-23 16:10:31,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:31,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:31,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 16:10:31,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:31,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1486080578, now seen corresponding path program 1 times [2023-11-23 16:10:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:31,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778966381] [2023-11-23 16:10:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:31,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:31,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:31,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778966381] [2023-11-23 16:10:31,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778966381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:31,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:10:31,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:10:31,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162059985] [2023-11-23 16:10:31,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:31,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 16:10:31,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:31,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 16:10:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 16:10:31,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2023-11-23 16:10:31,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-23 16:10:31,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:31,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2023-11-23 16:10:31,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:31,996 INFO L124 PetriNetUnfolderBase]: 211/576 cut-off events. [2023-11-23 16:10:31,997 INFO L125 PetriNetUnfolderBase]: For 335/377 co-relation queries the response was YES. [2023-11-23 16:10:31,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 576 events. 211/576 cut-off events. For 335/377 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2980 event pairs, 106 based on Foata normal form. 24/580 useless extension candidates. Maximal degree in co-relation 1375. Up to 252 conditions per place. [2023-11-23 16:10:32,002 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 48 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-11-23 16:10:32,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 339 flow [2023-11-23 16:10:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 16:10:32,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 16:10:32,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2023-11-23 16:10:32,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-23 16:10:32,005 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 98 transitions. [2023-11-23 16:10:32,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 98 transitions. [2023-11-23 16:10:32,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:32,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 98 transitions. [2023-11-23 16:10:32,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2023-11-23 16:10:32,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:32,009 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:32,009 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 142 flow. Second operand 4 states and 98 transitions. [2023-11-23 16:10:32,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 64 transitions, 339 flow [2023-11-23 16:10:32,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 333 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 16:10:32,013 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 164 flow [2023-11-23 16:10:32,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-11-23 16:10:32,015 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2023-11-23 16:10:32,015 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 164 flow [2023-11-23 16:10:32,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-11-23 16:10:32,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:32,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:32,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 16:10:32,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:32,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:32,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1246560452, now seen corresponding path program 1 times [2023-11-23 16:10:32,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:32,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790394813] [2023-11-23 16:10:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:32,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:32,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:32,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790394813] [2023-11-23 16:10:32,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790394813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:32,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:10:32,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:10:32,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645052584] [2023-11-23 16:10:32,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:32,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 16:10:32,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:32,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 16:10:32,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 16:10:32,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-23 16:10:32,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-23 16:10:32,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:32,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-23 16:10:32,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:32,168 INFO L124 PetriNetUnfolderBase]: 125/441 cut-off events. [2023-11-23 16:10:32,169 INFO L125 PetriNetUnfolderBase]: For 293/309 co-relation queries the response was YES. [2023-11-23 16:10:32,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 441 events. 125/441 cut-off events. For 293/309 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2132 event pairs, 43 based on Foata normal form. 20/459 useless extension candidates. Maximal degree in co-relation 1083. Up to 140 conditions per place. [2023-11-23 16:10:32,171 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 32 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-11-23 16:10:32,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 277 flow [2023-11-23 16:10:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 16:10:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 16:10:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-23 16:10:32,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-23 16:10:32,173 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-23 16:10:32,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-23 16:10:32,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:32,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-23 16:10:32,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2023-11-23 16:10:32,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:32,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:32,174 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 164 flow. Second operand 3 states and 75 transitions. [2023-11-23 16:10:32,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 51 transitions, 277 flow [2023-11-23 16:10:32,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 267 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-23 16:10:32,177 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 151 flow [2023-11-23 16:10:32,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-11-23 16:10:32,178 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-11-23 16:10:32,178 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 151 flow [2023-11-23 16:10:32,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-23 16:10:32,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:32,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:32,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 16:10:32,179 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:32,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:32,179 INFO L85 PathProgramCache]: Analyzing trace with hash 281194433, now seen corresponding path program 1 times [2023-11-23 16:10:32,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:32,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086043341] [2023-11-23 16:10:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:32,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:32,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:32,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:32,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086043341] [2023-11-23 16:10:32,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086043341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:32,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:10:32,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:10:32,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182375291] [2023-11-23 16:10:32,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:32,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 16:10:32,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 16:10:32,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 16:10:32,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 16:10:32,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-23 16:10:32,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:32,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 16:10:32,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:32,348 INFO L124 PetriNetUnfolderBase]: 232/655 cut-off events. [2023-11-23 16:10:32,348 INFO L125 PetriNetUnfolderBase]: For 455/491 co-relation queries the response was YES. [2023-11-23 16:10:32,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767 conditions, 655 events. 232/655 cut-off events. For 455/491 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3545 event pairs, 92 based on Foata normal form. 10/640 useless extension candidates. Maximal degree in co-relation 1750. Up to 249 conditions per place. [2023-11-23 16:10:32,353 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 48 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2023-11-23 16:10:32,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 65 transitions, 367 flow [2023-11-23 16:10:32,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 16:10:32,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 16:10:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2023-11-23 16:10:32,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2023-11-23 16:10:32,354 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 107 transitions. [2023-11-23 16:10:32,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 107 transitions. [2023-11-23 16:10:32,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:32,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 107 transitions. [2023-11-23 16:10:32,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2023-11-23 16:10:32,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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) [2023-11-23 16:10:32,357 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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) [2023-11-23 16:10:32,357 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 151 flow. Second operand 5 states and 107 transitions. [2023-11-23 16:10:32,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 65 transitions, 367 flow [2023-11-23 16:10:32,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 357 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 16:10:32,360 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 180 flow [2023-11-23 16:10:32,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-11-23 16:10:32,363 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2023-11-23 16:10:32,363 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 180 flow [2023-11-23 16:10:32,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-23 16:10:32,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:32,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:32,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 16:10:32,364 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:32,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:32,365 INFO L85 PathProgramCache]: Analyzing trace with hash 373440096, now seen corresponding path program 1 times [2023-11-23 16:10:32,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:32,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305581463] [2023-11-23 16:10:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:32,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:32,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:32,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305581463] [2023-11-23 16:10:32,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305581463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:32,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:10:32,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:10:32,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805497696] [2023-11-23 16:10:32,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:32,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 16:10:32,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:32,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 16:10:32,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 16:10:32,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 16:10:32,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-23 16:10:32,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:32,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 16:10:32,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:32,554 INFO L124 PetriNetUnfolderBase]: 278/830 cut-off events. [2023-11-23 16:10:32,554 INFO L125 PetriNetUnfolderBase]: For 796/827 co-relation queries the response was YES. [2023-11-23 16:10:32,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 830 events. 278/830 cut-off events. For 796/827 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4755 event pairs, 120 based on Foata normal form. 18/837 useless extension candidates. Maximal degree in co-relation 2204. Up to 302 conditions per place. [2023-11-23 16:10:32,559 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 69 selfloop transitions, 7 changer transitions 0/87 dead transitions. [2023-11-23 16:10:32,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 87 transitions, 529 flow [2023-11-23 16:10:32,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 16:10:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 16:10:32,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2023-11-23 16:10:32,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-23 16:10:32,560 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 133 transitions. [2023-11-23 16:10:32,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 133 transitions. [2023-11-23 16:10:32,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:32,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 133 transitions. [2023-11-23 16:10:32,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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) [2023-11-23 16:10:32,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 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) [2023-11-23 16:10:32,562 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 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) [2023-11-23 16:10:32,562 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 180 flow. Second operand 6 states and 133 transitions. [2023-11-23 16:10:32,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 87 transitions, 529 flow [2023-11-23 16:10:32,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 524 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 16:10:32,565 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 233 flow [2023-11-23 16:10:32,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2023-11-23 16:10:32,565 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2023-11-23 16:10:32,565 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 233 flow [2023-11-23 16:10:32,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-23 16:10:32,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:32,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:32,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 16:10:32,566 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:32,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:32,566 INFO L85 PathProgramCache]: Analyzing trace with hash 470501479, now seen corresponding path program 1 times [2023-11-23 16:10:32,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:32,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787097831] [2023-11-23 16:10:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:32,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:32,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:32,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787097831] [2023-11-23 16:10:32,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787097831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:32,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:10:32,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:10:32,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015006150] [2023-11-23 16:10:32,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:32,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 16:10:32,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:32,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 16:10:32,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 16:10:32,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 16:10:32,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-23 16:10:32,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:32,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 16:10:32,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:32,745 INFO L124 PetriNetUnfolderBase]: 282/802 cut-off events. [2023-11-23 16:10:32,745 INFO L125 PetriNetUnfolderBase]: For 1121/1192 co-relation queries the response was YES. [2023-11-23 16:10:32,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 802 events. 282/802 cut-off events. For 1121/1192 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4419 event pairs, 119 based on Foata normal form. 5/805 useless extension candidates. Maximal degree in co-relation 2303. Up to 514 conditions per place. [2023-11-23 16:10:32,750 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 53 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2023-11-23 16:10:32,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 472 flow [2023-11-23 16:10:32,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 16:10:32,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 16:10:32,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2023-11-23 16:10:32,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2023-11-23 16:10:32,751 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 107 transitions. [2023-11-23 16:10:32,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 107 transitions. [2023-11-23 16:10:32,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:32,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 107 transitions. [2023-11-23 16:10:32,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2023-11-23 16:10:32,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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) [2023-11-23 16:10:32,752 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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) [2023-11-23 16:10:32,752 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 233 flow. Second operand 5 states and 107 transitions. [2023-11-23 16:10:32,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 472 flow [2023-11-23 16:10:32,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 465 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-23 16:10:32,756 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 267 flow [2023-11-23 16:10:32,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2023-11-23 16:10:32,757 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2023-11-23 16:10:32,757 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 267 flow [2023-11-23 16:10:32,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-23 16:10:32,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:32,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:32,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 16:10:32,758 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:32,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:32,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1308258602, now seen corresponding path program 1 times [2023-11-23 16:10:32,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:32,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080472710] [2023-11-23 16:10:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:32,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:32,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:32,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080472710] [2023-11-23 16:10:32,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080472710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:32,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:10:32,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:10:32,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951132639] [2023-11-23 16:10:32,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:32,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 16:10:32,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:32,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 16:10:32,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 16:10:32,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 16:10:32,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-23 16:10:32,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:32,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 16:10:32,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:32,908 INFO L124 PetriNetUnfolderBase]: 279/872 cut-off events. [2023-11-23 16:10:32,908 INFO L125 PetriNetUnfolderBase]: For 1313/1320 co-relation queries the response was YES. [2023-11-23 16:10:32,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 872 events. 279/872 cut-off events. For 1313/1320 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5316 event pairs, 139 based on Foata normal form. 4/866 useless extension candidates. Maximal degree in co-relation 2478. Up to 520 conditions per place. [2023-11-23 16:10:32,914 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 54 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2023-11-23 16:10:32,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 514 flow [2023-11-23 16:10:32,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 16:10:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 16:10:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2023-11-23 16:10:32,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469387755102041 [2023-11-23 16:10:32,915 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 134 transitions. [2023-11-23 16:10:32,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 134 transitions. [2023-11-23 16:10:32,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:32,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 134 transitions. [2023-11-23 16:10:32,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:32,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 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) [2023-11-23 16:10:32,917 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 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) [2023-11-23 16:10:32,917 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 267 flow. Second operand 7 states and 134 transitions. [2023-11-23 16:10:32,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 514 flow [2023-11-23 16:10:32,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 501 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-23 16:10:32,921 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 310 flow [2023-11-23 16:10:32,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2023-11-23 16:10:32,921 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 35 predicate places. [2023-11-23 16:10:32,921 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 310 flow [2023-11-23 16:10:32,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2023-11-23 16:10:32,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:32,922 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:32,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 16:10:32,922 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:32,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:32,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1087221214, now seen corresponding path program 1 times [2023-11-23 16:10:32,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:32,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816410426] [2023-11-23 16:10:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:32,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:32,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:32,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816410426] [2023-11-23 16:10:32,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816410426] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:10:32,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190485588] [2023-11-23 16:10:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:32,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:10:32,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:10:32,987 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) [2023-11-23 16:10:33,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 16:10:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:33,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 16:10:33,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:10:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:33,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 16:10:33,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190485588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:33,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 16:10:33,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-23 16:10:33,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909159633] [2023-11-23 16:10:33,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:33,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 16:10:33,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:33,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 16:10:33,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 16:10:33,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-23 16:10:33,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-23 16:10:33,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:33,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-23 16:10:33,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:33,204 INFO L124 PetriNetUnfolderBase]: 285/812 cut-off events. [2023-11-23 16:10:33,205 INFO L125 PetriNetUnfolderBase]: For 1362/1406 co-relation queries the response was YES. [2023-11-23 16:10:33,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2408 conditions, 812 events. 285/812 cut-off events. For 1362/1406 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4668 event pairs, 139 based on Foata normal form. 24/826 useless extension candidates. Maximal degree in co-relation 2378. Up to 555 conditions per place. [2023-11-23 16:10:33,209 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 44 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2023-11-23 16:10:33,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 58 transitions, 425 flow [2023-11-23 16:10:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 16:10:33,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 16:10:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 76 transitions. [2023-11-23 16:10:33,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2023-11-23 16:10:33,211 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 76 transitions. [2023-11-23 16:10:33,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 76 transitions. [2023-11-23 16:10:33,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:33,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 76 transitions. [2023-11-23 16:10:33,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2023-11-23 16:10:33,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:33,212 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:33,212 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 310 flow. Second operand 4 states and 76 transitions. [2023-11-23 16:10:33,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 58 transitions, 425 flow [2023-11-23 16:10:33,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 58 transitions, 407 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-23 16:10:33,215 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 278 flow [2023-11-23 16:10:33,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2023-11-23 16:10:33,216 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 30 predicate places. [2023-11-23 16:10:33,216 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 278 flow [2023-11-23 16:10:33,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-23 16:10:33,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:33,216 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:33,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 16:10:33,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 16:10:33,429 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:33,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:33,429 INFO L85 PathProgramCache]: Analyzing trace with hash -655880424, now seen corresponding path program 1 times [2023-11-23 16:10:33,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:33,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896593225] [2023-11-23 16:10:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:33,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:33,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:33,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896593225] [2023-11-23 16:10:33,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896593225] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:10:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549097510] [2023-11-23 16:10:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:33,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:10:33,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:10:33,475 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) [2023-11-23 16:10:33,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 16:10:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:33,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 16:10:33,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:10:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:33,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 16:10:33,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:33,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549097510] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 16:10:33,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 16:10:33,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-23 16:10:33,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217171957] [2023-11-23 16:10:33,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 16:10:33,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 16:10:33,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:33,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 16:10:33,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-23 16:10:33,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 16:10:33,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 278 flow. Second operand has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 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) [2023-11-23 16:10:33,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:33,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 16:10:33,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:33,961 INFO L124 PetriNetUnfolderBase]: 646/1929 cut-off events. [2023-11-23 16:10:33,961 INFO L125 PetriNetUnfolderBase]: For 3082/3220 co-relation queries the response was YES. [2023-11-23 16:10:33,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5341 conditions, 1929 events. 646/1929 cut-off events. For 3082/3220 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14173 event pairs, 102 based on Foata normal form. 73/1989 useless extension candidates. Maximal degree in co-relation 5313. Up to 415 conditions per place. [2023-11-23 16:10:33,971 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 166 selfloop transitions, 28 changer transitions 0/205 dead transitions. [2023-11-23 16:10:33,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 205 transitions, 1380 flow [2023-11-23 16:10:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 16:10:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-23 16:10:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 364 transitions. [2023-11-23 16:10:33,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2023-11-23 16:10:33,973 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 364 transitions. [2023-11-23 16:10:33,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 364 transitions. [2023-11-23 16:10:33,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:33,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 364 transitions. [2023-11-23 16:10:33,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 22.75) internal successors, (364), 16 states have internal predecessors, (364), 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) [2023-11-23 16:10:33,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 35.0) internal successors, (595), 17 states have internal predecessors, (595), 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) [2023-11-23 16:10:33,975 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 35.0) internal successors, (595), 17 states have internal predecessors, (595), 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) [2023-11-23 16:10:33,976 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 278 flow. Second operand 16 states and 364 transitions. [2023-11-23 16:10:33,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 205 transitions, 1380 flow [2023-11-23 16:10:33,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 205 transitions, 1379 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 16:10:33,981 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 584 flow [2023-11-23 16:10:33,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=584, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2023-11-23 16:10:33,981 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 52 predicate places. [2023-11-23 16:10:33,982 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 584 flow [2023-11-23 16:10:33,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 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) [2023-11-23 16:10:33,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:33,982 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:33,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 16:10:34,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 16:10:34,194 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:34,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:34,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1527173023, now seen corresponding path program 1 times [2023-11-23 16:10:34,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:34,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613668797] [2023-11-23 16:10:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:34,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:34,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:34,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613668797] [2023-11-23 16:10:34,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613668797] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:10:34,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501602821] [2023-11-23 16:10:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:34,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:10:34,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:10:34,240 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) [2023-11-23 16:10:34,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 16:10:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:34,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 16:10:34,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:10:34,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:34,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 16:10:34,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501602821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:34,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 16:10:34,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-23 16:10:34,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668272817] [2023-11-23 16:10:34,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:34,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 16:10:34,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:34,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 16:10:34,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 16:10:34,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2023-11-23 16:10:34,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 584 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2023-11-23 16:10:34,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:34,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2023-11-23 16:10:34,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:34,569 INFO L124 PetriNetUnfolderBase]: 663/1900 cut-off events. [2023-11-23 16:10:34,569 INFO L125 PetriNetUnfolderBase]: For 3599/3717 co-relation queries the response was YES. [2023-11-23 16:10:34,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5701 conditions, 1900 events. 663/1900 cut-off events. For 3599/3717 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13956 event pairs, 60 based on Foata normal form. 63/1900 useless extension candidates. Maximal degree in co-relation 5664. Up to 813 conditions per place. [2023-11-23 16:10:34,579 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 120 selfloop transitions, 5 changer transitions 0/140 dead transitions. [2023-11-23 16:10:34,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 140 transitions, 1284 flow [2023-11-23 16:10:34,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 16:10:34,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 16:10:34,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2023-11-23 16:10:34,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2023-11-23 16:10:34,581 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 137 transitions. [2023-11-23 16:10:34,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 137 transitions. [2023-11-23 16:10:34,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:34,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 137 transitions. [2023-11-23 16:10:34,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 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) [2023-11-23 16:10:34,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 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) [2023-11-23 16:10:34,582 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 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) [2023-11-23 16:10:34,582 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 584 flow. Second operand 6 states and 137 transitions. [2023-11-23 16:10:34,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 140 transitions, 1284 flow [2023-11-23 16:10:34,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 140 transitions, 1086 flow, removed 84 selfloop flow, removed 6 redundant places. [2023-11-23 16:10:34,591 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 486 flow [2023-11-23 16:10:34,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=486, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2023-11-23 16:10:34,591 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2023-11-23 16:10:34,592 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 486 flow [2023-11-23 16:10:34,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2023-11-23 16:10:34,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:34,592 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:34,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 16:10:34,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:10:34,804 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:34,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:34,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1381344985, now seen corresponding path program 1 times [2023-11-23 16:10:34,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:34,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944192342] [2023-11-23 16:10:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:34,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:34,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:34,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944192342] [2023-11-23 16:10:34,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944192342] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:10:34,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826726267] [2023-11-23 16:10:34,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:34,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:10:34,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:10:34,877 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) [2023-11-23 16:10:34,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 16:10:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:34,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 16:10:34,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:10:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:34,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 16:10:34,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826726267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:34,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 16:10:34,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-23 16:10:34,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803321464] [2023-11-23 16:10:34,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:34,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 16:10:34,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:34,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 16:10:34,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 16:10:34,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-23 16:10:34,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 486 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2023-11-23 16:10:34,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:34,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-23 16:10:34,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:35,164 INFO L124 PetriNetUnfolderBase]: 805/2126 cut-off events. [2023-11-23 16:10:35,165 INFO L125 PetriNetUnfolderBase]: For 3875/3908 co-relation queries the response was YES. [2023-11-23 16:10:35,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6509 conditions, 2126 events. 805/2126 cut-off events. For 3875/3908 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 15521 event pairs, 211 based on Foata normal form. 75/2117 useless extension candidates. Maximal degree in co-relation 6474. Up to 997 conditions per place. [2023-11-23 16:10:35,178 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 99 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2023-11-23 16:10:35,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 1007 flow [2023-11-23 16:10:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 16:10:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 16:10:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2023-11-23 16:10:35,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2023-11-23 16:10:35,180 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2023-11-23 16:10:35,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2023-11-23 16:10:35,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:35,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2023-11-23 16:10:35,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2023-11-23 16:10:35,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:35,181 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:35,181 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 486 flow. Second operand 4 states and 88 transitions. [2023-11-23 16:10:35,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 1007 flow [2023-11-23 16:10:35,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 992 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 16:10:35,189 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 487 flow [2023-11-23 16:10:35,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=487, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2023-11-23 16:10:35,189 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2023-11-23 16:10:35,190 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 487 flow [2023-11-23 16:10:35,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2023-11-23 16:10:35,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:35,190 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 16:10:35,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 16:10:35,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:10:35,402 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:35,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:35,402 INFO L85 PathProgramCache]: Analyzing trace with hash -127978142, now seen corresponding path program 1 times [2023-11-23 16:10:35,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:35,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610441681] [2023-11-23 16:10:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:35,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 16:10:35,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:35,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610441681] [2023-11-23 16:10:35,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610441681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:35,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:10:35,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:10:35,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885698412] [2023-11-23 16:10:35,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:35,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 16:10:35,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:35,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 16:10:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 16:10:35,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-23 16:10:35,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-11-23 16:10:35,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:35,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-23 16:10:35,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:35,623 INFO L124 PetriNetUnfolderBase]: 739/2091 cut-off events. [2023-11-23 16:10:35,624 INFO L125 PetriNetUnfolderBase]: For 4061/4071 co-relation queries the response was YES. [2023-11-23 16:10:35,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6374 conditions, 2091 events. 739/2091 cut-off events. For 4061/4071 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 15162 event pairs, 177 based on Foata normal form. 75/2159 useless extension candidates. Maximal degree in co-relation 6339. Up to 824 conditions per place. [2023-11-23 16:10:35,642 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 112 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2023-11-23 16:10:35,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 131 transitions, 1151 flow [2023-11-23 16:10:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 16:10:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 16:10:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2023-11-23 16:10:35,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2023-11-23 16:10:35,643 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2023-11-23 16:10:35,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2023-11-23 16:10:35,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:35,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2023-11-23 16:10:35,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2023-11-23 16:10:35,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:35,645 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:35,645 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 487 flow. Second operand 4 states and 88 transitions. [2023-11-23 16:10:35,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 131 transitions, 1151 flow [2023-11-23 16:10:35,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 131 transitions, 1141 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 16:10:35,653 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 493 flow [2023-11-23 16:10:35,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=493, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2023-11-23 16:10:35,653 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2023-11-23 16:10:35,654 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 493 flow [2023-11-23 16:10:35,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2023-11-23 16:10:35,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:35,654 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 16:10:35,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 16:10:35,654 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:35,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:35,655 INFO L85 PathProgramCache]: Analyzing trace with hash -97723141, now seen corresponding path program 1 times [2023-11-23 16:10:35,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:35,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258325895] [2023-11-23 16:10:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:35,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 16:10:35,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:35,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258325895] [2023-11-23 16:10:35,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258325895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 16:10:35,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 16:10:35,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 16:10:35,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287202255] [2023-11-23 16:10:35,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 16:10:35,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 16:10:35,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:35,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 16:10:35,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 16:10:35,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-23 16:10:35,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 493 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-11-23 16:10:35,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:35,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-23 16:10:35,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:35,860 INFO L124 PetriNetUnfolderBase]: 730/1934 cut-off events. [2023-11-23 16:10:35,861 INFO L125 PetriNetUnfolderBase]: For 4243/4243 co-relation queries the response was YES. [2023-11-23 16:10:35,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6196 conditions, 1934 events. 730/1934 cut-off events. For 4243/4243 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 13537 event pairs, 113 based on Foata normal form. 63/1976 useless extension candidates. Maximal degree in co-relation 6161. Up to 859 conditions per place. [2023-11-23 16:10:35,871 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 92 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2023-11-23 16:10:35,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 111 transitions, 928 flow [2023-11-23 16:10:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 16:10:35,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 16:10:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2023-11-23 16:10:35,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2023-11-23 16:10:35,872 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 86 transitions. [2023-11-23 16:10:35,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 86 transitions. [2023-11-23 16:10:35,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:35,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 86 transitions. [2023-11-23 16:10:35,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2023-11-23 16:10:35,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:35,873 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 16:10:35,874 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 493 flow. Second operand 4 states and 86 transitions. [2023-11-23 16:10:35,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 111 transitions, 928 flow [2023-11-23 16:10:35,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 111 transitions, 902 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-23 16:10:35,883 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 497 flow [2023-11-23 16:10:35,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=497, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2023-11-23 16:10:35,883 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2023-11-23 16:10:35,884 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 497 flow [2023-11-23 16:10:35,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2023-11-23 16:10:35,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:35,884 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 16:10:35,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 16:10:35,884 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:35,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:35,885 INFO L85 PathProgramCache]: Analyzing trace with hash 468692629, now seen corresponding path program 1 times [2023-11-23 16:10:35,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:35,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145092125] [2023-11-23 16:10:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:35,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:36,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:36,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145092125] [2023-11-23 16:10:36,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145092125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:10:36,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965879263] [2023-11-23 16:10:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:36,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:10:36,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:10:36,002 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) [2023-11-23 16:10:36,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 16:10:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:36,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 16:10:36,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:10:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:36,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 16:10:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:36,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965879263] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 16:10:36,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 16:10:36,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-23 16:10:36,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397286943] [2023-11-23 16:10:36,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 16:10:36,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 16:10:36,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:36,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 16:10:36,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2023-11-23 16:10:36,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 16:10:36,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 497 flow. Second operand has 22 states, 22 states have (on average 14.818181818181818) internal successors, (326), 22 states have internal predecessors, (326), 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) [2023-11-23 16:10:36,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:36,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 16:10:36,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:37,855 INFO L124 PetriNetUnfolderBase]: 2994/8265 cut-off events. [2023-11-23 16:10:37,855 INFO L125 PetriNetUnfolderBase]: For 29469/29469 co-relation queries the response was YES. [2023-11-23 16:10:37,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26100 conditions, 8265 events. 2994/8265 cut-off events. For 29469/29469 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 66281 event pairs, 342 based on Foata normal form. 421/8677 useless extension candidates. Maximal degree in co-relation 26065. Up to 1256 conditions per place. [2023-11-23 16:10:37,901 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 630 selfloop transitions, 114 changer transitions 0/753 dead transitions. [2023-11-23 16:10:37,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 753 transitions, 5748 flow [2023-11-23 16:10:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-23 16:10:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-11-23 16:10:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1366 transitions. [2023-11-23 16:10:37,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6729064039408867 [2023-11-23 16:10:37,905 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1366 transitions. [2023-11-23 16:10:37,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1366 transitions. [2023-11-23 16:10:37,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:37,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1366 transitions. [2023-11-23 16:10:37,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 23.551724137931036) internal successors, (1366), 58 states have internal predecessors, (1366), 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) [2023-11-23 16:10:37,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 35.0) internal successors, (2065), 59 states have internal predecessors, (2065), 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) [2023-11-23 16:10:37,911 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 35.0) internal successors, (2065), 59 states have internal predecessors, (2065), 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) [2023-11-23 16:10:37,911 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 497 flow. Second operand 58 states and 1366 transitions. [2023-11-23 16:10:37,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 753 transitions, 5748 flow [2023-11-23 16:10:37,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 753 transitions, 5490 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 16:10:37,941 INFO L231 Difference]: Finished difference. Result has 176 places, 167 transitions, 1765 flow [2023-11-23 16:10:37,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1765, PETRI_PLACES=176, PETRI_TRANSITIONS=167} [2023-11-23 16:10:37,942 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 142 predicate places. [2023-11-23 16:10:37,942 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 167 transitions, 1765 flow [2023-11-23 16:10:37,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.818181818181818) internal successors, (326), 22 states have internal predecessors, (326), 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) [2023-11-23 16:10:37,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:37,942 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 16:10:37,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 16:10:38,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 16:10:38,154 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:38,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:38,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1055211896, now seen corresponding path program 1 times [2023-11-23 16:10:38,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:38,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973357993] [2023-11-23 16:10:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:38,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:38,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:38,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973357993] [2023-11-23 16:10:38,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973357993] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:10:38,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193137254] [2023-11-23 16:10:38,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:38,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:10:38,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:10:38,379 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) [2023-11-23 16:10:38,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 16:10:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:38,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 16:10:38,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:10:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:38,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 16:10:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:38,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193137254] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 16:10:38,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 16:10:38,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2023-11-23 16:10:38,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713755668] [2023-11-23 16:10:38,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 16:10:38,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 16:10:38,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 16:10:38,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2023-11-23 16:10:39,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 16:10:39,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 167 transitions, 1765 flow. Second operand has 28 states, 28 states have (on average 15.607142857142858) internal successors, (437), 28 states have internal predecessors, (437), 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) [2023-11-23 16:10:39,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:39,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 16:10:39,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:10:46,248 INFO L124 PetriNetUnfolderBase]: 11857/32894 cut-off events. [2023-11-23 16:10:46,248 INFO L125 PetriNetUnfolderBase]: For 690684/690684 co-relation queries the response was YES. [2023-11-23 16:10:46,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108891 conditions, 32894 events. 11857/32894 cut-off events. For 690684/690684 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 319026 event pairs, 1704 based on Foata normal form. 1039/33885 useless extension candidates. Maximal degree in co-relation 108816. Up to 5237 conditions per place. [2023-11-23 16:10:46,802 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 902 selfloop transitions, 433 changer transitions 0/1344 dead transitions. [2023-11-23 16:10:46,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 1344 transitions, 12297 flow [2023-11-23 16:10:46,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-23 16:10:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2023-11-23 16:10:46,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 1879 transitions. [2023-11-23 16:10:46,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6710714285714285 [2023-11-23 16:10:46,805 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 1879 transitions. [2023-11-23 16:10:46,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 1879 transitions. [2023-11-23 16:10:46,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:10:46,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 1879 transitions. [2023-11-23 16:10:46,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 23.4875) internal successors, (1879), 80 states have internal predecessors, (1879), 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) [2023-11-23 16:10:46,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 35.0) internal successors, (2835), 81 states have internal predecessors, (2835), 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) [2023-11-23 16:10:46,812 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 35.0) internal successors, (2835), 81 states have internal predecessors, (2835), 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) [2023-11-23 16:10:46,813 INFO L175 Difference]: Start difference. First operand has 176 places, 167 transitions, 1765 flow. Second operand 80 states and 1879 transitions. [2023-11-23 16:10:46,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 1344 transitions, 12297 flow [2023-11-23 16:10:47,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 1344 transitions, 10655 flow, removed 783 selfloop flow, removed 13 redundant places. [2023-11-23 16:10:47,342 INFO L231 Difference]: Finished difference. Result has 290 places, 538 transitions, 5671 flow [2023-11-23 16:10:47,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=5671, PETRI_PLACES=290, PETRI_TRANSITIONS=538} [2023-11-23 16:10:47,343 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 256 predicate places. [2023-11-23 16:10:47,343 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 538 transitions, 5671 flow [2023-11-23 16:10:47,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 15.607142857142858) internal successors, (437), 28 states have internal predecessors, (437), 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) [2023-11-23 16:10:47,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:10:47,343 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 16:10:47,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 16:10:47,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 16:10:47,558 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:10:47,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:10:47,558 INFO L85 PathProgramCache]: Analyzing trace with hash 145161671, now seen corresponding path program 1 times [2023-11-23 16:10:47,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:10:47,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303549382] [2023-11-23 16:10:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:47,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:10:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:47,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:10:47,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303549382] [2023-11-23 16:10:47,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303549382] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:10:47,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271520790] [2023-11-23 16:10:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:10:47,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:10:47,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:10:47,954 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) [2023-11-23 16:10:47,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 16:10:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:10:48,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-23 16:10:48,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:10:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:48,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 16:10:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:10:48,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271520790] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 16:10:48,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 16:10:48,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-11-23 16:10:48,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023388626] [2023-11-23 16:10:48,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 16:10:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-23 16:10:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:10:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-23 16:10:48,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 16:10:48,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 16:10:48,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 538 transitions, 5671 flow. Second operand has 34 states, 34 states have (on average 15.147058823529411) internal successors, (515), 34 states have internal predecessors, (515), 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) [2023-11-23 16:10:48,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:10:48,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 16:10:48,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 16:11:11,246 INFO L124 PetriNetUnfolderBase]: 27997/77663 cut-off events. [2023-11-23 16:11:11,246 INFO L125 PetriNetUnfolderBase]: For 3862524/3862524 co-relation queries the response was YES. [2023-11-23 16:11:13,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265890 conditions, 77663 events. 27997/77663 cut-off events. For 3862524/3862524 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 879663 event pairs, 3442 based on Foata normal form. 1424/79053 useless extension candidates. Maximal degree in co-relation 265766. Up to 12620 conditions per place. [2023-11-23 16:11:13,646 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 1486 selfloop transitions, 1080 changer transitions 0/2575 dead transitions. [2023-11-23 16:11:13,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 2575 transitions, 25770 flow [2023-11-23 16:11:13,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-11-23 16:11:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2023-11-23 16:11:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 3039 transitions. [2023-11-23 16:11:13,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6679120879120879 [2023-11-23 16:11:13,660 INFO L72 ComplementDD]: Start complementDD. Operand 130 states and 3039 transitions. [2023-11-23 16:11:13,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 130 states and 3039 transitions. [2023-11-23 16:11:13,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 16:11:13,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 130 states and 3039 transitions. [2023-11-23 16:11:13,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 131 states, 130 states have (on average 23.376923076923077) internal successors, (3039), 130 states have internal predecessors, (3039), 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) [2023-11-23 16:11:13,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 131 states, 131 states have (on average 35.0) internal successors, (4585), 131 states have internal predecessors, (4585), 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) [2023-11-23 16:11:13,686 INFO L81 ComplementDD]: Finished complementDD. Result has 131 states, 131 states have (on average 35.0) internal successors, (4585), 131 states have internal predecessors, (4585), 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) [2023-11-23 16:11:13,686 INFO L175 Difference]: Start difference. First operand has 290 places, 538 transitions, 5671 flow. Second operand 130 states and 3039 transitions. [2023-11-23 16:11:13,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 2575 transitions, 25770 flow [2023-11-23 16:11:18,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 2575 transitions, 24400 flow, removed 648 selfloop flow, removed 22 redundant places. [2023-11-23 16:11:18,942 INFO L231 Difference]: Finished difference. Result has 452 places, 1192 transitions, 14616 flow [2023-11-23 16:11:18,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4963, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=130, PETRI_FLOW=14616, PETRI_PLACES=452, PETRI_TRANSITIONS=1192} [2023-11-23 16:11:18,944 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 418 predicate places. [2023-11-23 16:11:18,944 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 1192 transitions, 14616 flow [2023-11-23 16:11:18,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 15.147058823529411) internal successors, (515), 34 states have internal predecessors, (515), 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) [2023-11-23 16:11:18,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 16:11:18,944 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-11-23 16:11:18,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 16:11:19,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:11:19,157 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-23 16:11:19,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 16:11:19,158 INFO L85 PathProgramCache]: Analyzing trace with hash -983399472, now seen corresponding path program 2 times [2023-11-23 16:11:19,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 16:11:19,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050993064] [2023-11-23 16:11:19,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 16:11:19,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 16:11:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 16:11:19,572 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:11:19,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 16:11:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050993064] [2023-11-23 16:11:19,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050993064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 16:11:19,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072120994] [2023-11-23 16:11:19,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 16:11:19,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 16:11:19,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 16:11:19,581 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) [2023-11-23 16:11:19,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 16:11:19,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 16:11:19,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 16:11:19,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 16:11:19,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 16:11:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:11:19,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 16:11:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 16:11:20,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072120994] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 16:11:20,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 16:11:20,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2023-11-23 16:11:20,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404065538] [2023-11-23 16:11:20,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 16:11:20,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-23 16:11:20,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 16:11:20,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-23 16:11:20,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1077, Unknown=0, NotChecked=0, Total=1560 [2023-11-23 16:11:20,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 16:11:20,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1192 transitions, 14616 flow. Second operand has 40 states, 40 states have (on average 15.625) internal successors, (625), 40 states have internal predecessors, (625), 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) [2023-11-23 16:11:20,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 16:11:20,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 16:11:20,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand