./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/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/weaver/parallel-min-max-1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:07:19,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:07:19,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:07:19,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:07:19,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:07:19,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:07:19,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:07:19,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:07:19,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:07:19,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:07:19,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:07:19,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:07:19,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:07:19,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:07:19,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:07:19,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:07:19,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:07:19,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:07:19,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:07:19,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:07:19,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:07:19,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:07:19,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:07:19,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:07:19,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:07:19,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:07:19,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:07:19,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:07:19,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:07:19,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:07:19,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:07:19,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:07:19,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:07:19,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:07:19,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:07:19,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:07:19,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:07:19,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:07:19,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:07:19,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:07:19,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:07:19,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:07:19,220 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:07:19,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:07:19,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:07:19,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:07:19,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:07:19,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:07:19,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:07:19,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:07:19,228 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:07:19,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:07:19,229 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:07:19,229 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:07:19,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:07:19,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:07:19,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:07:19,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:07:19,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:07:19,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:07:19,230 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:07:19,231 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:07:19,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:07:19,231 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:07:19,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:07:19,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:07:19,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:07:19,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:07:19,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:07:19,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:07:19,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:07:19,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:07:19,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:07:19,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:07:19,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:07:19,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:07:19,234 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:07:19,234 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:07:19,234 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:07:19,235 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:07:19,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:07:19,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:07:19,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:07:19,576 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:07:19,577 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:07:19,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-08-30 15:07:20,758 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:07:20,969 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:07:20,970 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-08-30 15:07:20,985 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71b4ad99/0a62b374b0b044e4852064697d6e042a/FLAG6d1d23429 [2023-08-30 15:07:20,998 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71b4ad99/0a62b374b0b044e4852064697d6e042a [2023-08-30 15:07:21,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:07:21,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:07:21,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:07:21,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:07:21,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:07:21,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:07:20" (1/1) ... [2023-08-30 15:07:21,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc09427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21, skipping insertion in model container [2023-08-30 15:07:21,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:07:20" (1/1) ... [2023-08-30 15:07:21,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:07:21,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:07:21,187 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2023-08-30 15:07:21,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:07:21,217 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:07:21,259 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2023-08-30 15:07:21,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:07:21,278 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:07:21,280 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:07:21,286 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:07:21,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21 WrapperNode [2023-08-30 15:07:21,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:07:21,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:07:21,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:07:21,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:07:21,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21" (1/1) ... [2023-08-30 15:07:21,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21" (1/1) ... [2023-08-30 15:07:21,338 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 131 [2023-08-30 15:07:21,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:07:21,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:07:21,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:07:21,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:07:21,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21" (1/1) ... [2023-08-30 15:07:21,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21" (1/1) ... [2023-08-30 15:07:21,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21" (1/1) ... [2023-08-30 15:07:21,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21" (1/1) ... [2023-08-30 15:07:21,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21" (1/1) ... [2023-08-30 15:07:21,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21" (1/1) ... [2023-08-30 15:07:21,386 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21" (1/1) ... [2023-08-30 15:07:21,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21" (1/1) ... [2023-08-30 15:07:21,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:07:21,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:07:21,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:07:21,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:07:21,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21" (1/1) ... [2023-08-30 15:07:21,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:07:21,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:07:21,428 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) [2023-08-30 15:07:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:07:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:07:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:07:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:07:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:07:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:07:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:07:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:07:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:07:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:07:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:07:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:07:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:07:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:07:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:07:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:07:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:07:21,461 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:07:21,455 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 [2023-08-30 15:07:21,612 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:07:21,614 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:07:21,871 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:07:21,943 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:07:21,943 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 15:07:21,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:07:21 BoogieIcfgContainer [2023-08-30 15:07:21,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:07:21,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:07:21,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:07:21,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:07:21,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:07:20" (1/3) ... [2023-08-30 15:07:21,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aaa9a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:07:21, skipping insertion in model container [2023-08-30 15:07:21,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:07:21" (2/3) ... [2023-08-30 15:07:21,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aaa9a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:07:21, skipping insertion in model container [2023-08-30 15:07:21,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:07:21" (3/3) ... [2023-08-30 15:07:21,968 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-08-30 15:07:21,974 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:07:21,982 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:07:21,982 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-30 15:07:21,983 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:07:22,109 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:07:22,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 179 transitions, 382 flow [2023-08-30 15:07:22,222 INFO L130 PetriNetUnfolder]: 12/176 cut-off events. [2023-08-30 15:07:22,222 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:07:22,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 176 events. 12/176 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 149. Up to 2 conditions per place. [2023-08-30 15:07:22,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 179 transitions, 382 flow [2023-08-30 15:07:22,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 155 transitions, 322 flow [2023-08-30 15:07:22,236 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:07:22,244 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 155 transitions, 322 flow [2023-08-30 15:07:22,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 155 transitions, 322 flow [2023-08-30 15:07:22,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 155 transitions, 322 flow [2023-08-30 15:07:22,277 INFO L130 PetriNetUnfolder]: 11/155 cut-off events. [2023-08-30 15:07:22,278 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 15:07:22,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 155 events. 11/155 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 149. Up to 2 conditions per place. [2023-08-30 15:07:22,280 INFO L119 LiptonReduction]: Number of co-enabled transitions 1604 [2023-08-30 15:07:28,185 INFO L134 LiptonReduction]: Checked pairs total: 2248 [2023-08-30 15:07:28,186 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-30 15:07:28,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:07:28,202 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=LoopsAndPotentialCycles, 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;@7d72fca6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:07:28,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-30 15:07:28,204 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:07:28,204 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:07:28,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:28,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:07:28,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:07:28,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:28,209 INFO L85 PathProgramCache]: Analyzing trace with hash 22144, now seen corresponding path program 1 times [2023-08-30 15:07:28,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:28,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45376684] [2023-08-30 15:07:28,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:28,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:07:28,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:28,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45376684] [2023-08-30 15:07:28,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45376684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:28,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:07:28,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:07:28,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142754238] [2023-08-30 15:07:28,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:28,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:07:28,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:28,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:07:28,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:07:28,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 341 [2023-08-30 15:07:28,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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) [2023-08-30 15:07:28,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:28,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 341 [2023-08-30 15:07:28,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:28,833 INFO L130 PetriNetUnfolder]: 963/1473 cut-off events. [2023-08-30 15:07:28,834 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 15:07:28,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3147 conditions, 1473 events. 963/1473 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6126 event pairs, 806 based on Foata normal form. 0/1001 useless extension candidates. Maximal degree in co-relation 1428. Up to 739 conditions per place. [2023-08-30 15:07:28,846 INFO L137 encePairwiseOnDemand]: 337/341 looper letters, 47 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-30 15:07:28,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 49 transitions, 220 flow [2023-08-30 15:07:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:07:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:07:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-08-30 15:07:28,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102639296187683 [2023-08-30 15:07:28,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-08-30 15:07:28,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-08-30 15:07:28,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:28,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-08-30 15:07:28,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2023-08-30 15:07:28,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:28,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:28,888 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 64 flow. Second operand 3 states and 522 transitions. [2023-08-30 15:07:28,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 49 transitions, 220 flow [2023-08-30 15:07:28,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 15:07:28,895 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 72 flow [2023-08-30 15:07:28,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-30 15:07:28,900 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2023-08-30 15:07:28,902 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 72 flow [2023-08-30 15:07:28,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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) [2023-08-30 15:07:28,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:28,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:07:28,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:07:28,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:07:28,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:28,906 INFO L85 PathProgramCache]: Analyzing trace with hash 687373, now seen corresponding path program 1 times [2023-08-30 15:07:28,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:28,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441733188] [2023-08-30 15:07:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:07:29,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:29,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441733188] [2023-08-30 15:07:29,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441733188] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:07:29,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863232565] [2023-08-30 15:07:29,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:29,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:07:29,025 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) [2023-08-30 15:07:29,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:07:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:29,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:07:29,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:07:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:07:29,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:07:29,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863232565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:29,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:07:29,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:07:29,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267348269] [2023-08-30 15:07:29,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:29,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:07:29,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:07:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:07:29,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 341 [2023-08-30 15:07:29,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 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) [2023-08-30 15:07:29,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:29,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 341 [2023-08-30 15:07:29,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:29,435 INFO L130 PetriNetUnfolder]: 963/1472 cut-off events. [2023-08-30 15:07:29,436 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 15:07:29,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 1472 events. 963/1472 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6123 event pairs, 806 based on Foata normal form. 0/1003 useless extension candidates. Maximal degree in co-relation 1559. Up to 737 conditions per place. [2023-08-30 15:07:29,444 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 46 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-30 15:07:29,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 214 flow [2023-08-30 15:07:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:07:29,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:07:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 677 transitions. [2023-08-30 15:07:29,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963343108504399 [2023-08-30 15:07:29,447 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 677 transitions. [2023-08-30 15:07:29,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 677 transitions. [2023-08-30 15:07:29,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:29,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 677 transitions. [2023-08-30 15:07:29,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 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) [2023-08-30 15:07:29,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 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) [2023-08-30 15:07:29,454 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 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) [2023-08-30 15:07:29,454 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 72 flow. Second operand 4 states and 677 transitions. [2023-08-30 15:07:29,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 214 flow [2023-08-30 15:07:29,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 48 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:07:29,456 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 70 flow [2023-08-30 15:07:29,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-30 15:07:29,457 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-30 15:07:29,457 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 70 flow [2023-08-30 15:07:29,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 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) [2023-08-30 15:07:29,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:29,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:07:29,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:07:29,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:29,663 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:07:29,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:29,663 INFO L85 PathProgramCache]: Analyzing trace with hash 687383, now seen corresponding path program 1 times [2023-08-30 15:07:29,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:29,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280794161] [2023-08-30 15:07:29,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:29,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:29,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:07:29,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:29,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280794161] [2023-08-30 15:07:29,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280794161] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:07:29,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785675521] [2023-08-30 15:07:29,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:29,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:29,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:07:29,733 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) [2023-08-30 15:07:29,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:07:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:29,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:07:29,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:07:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:07:29,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:07:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:07:29,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785675521] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:07:29,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:07:29,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:07:29,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699874190] [2023-08-30 15:07:29,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:07:29,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:07:29,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:29,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:07:29,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:07:29,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 341 [2023-08-30 15:07:29,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 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) [2023-08-30 15:07:29,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:29,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 341 [2023-08-30 15:07:29,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:30,291 INFO L130 PetriNetUnfolder]: 2406/3677 cut-off events. [2023-08-30 15:07:30,292 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-30 15:07:30,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7792 conditions, 3677 events. 2406/3677 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 17947 event pairs, 2015 based on Foata normal form. 0/2506 useless extension candidates. Maximal degree in co-relation 6227. Up to 738 conditions per place. [2023-08-30 15:07:30,309 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 112 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2023-08-30 15:07:30,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 117 transitions, 516 flow [2023-08-30 15:07:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:07:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:07:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1062 transitions. [2023-08-30 15:07:30,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190615835777126 [2023-08-30 15:07:30,313 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1062 transitions. [2023-08-30 15:07:30,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1062 transitions. [2023-08-30 15:07:30,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:30,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1062 transitions. [2023-08-30 15:07:30,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.0) internal successors, (1062), 6 states have internal predecessors, (1062), 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) [2023-08-30 15:07:30,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 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) [2023-08-30 15:07:30,320 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 341.0) internal successors, (2387), 7 states have internal predecessors, (2387), 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) [2023-08-30 15:07:30,320 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 70 flow. Second operand 6 states and 1062 transitions. [2023-08-30 15:07:30,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 117 transitions, 516 flow [2023-08-30 15:07:30,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 117 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:07:30,323 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 103 flow [2023-08-30 15:07:30,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2023-08-30 15:07:30,324 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-30 15:07:30,324 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 103 flow [2023-08-30 15:07:30,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 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) [2023-08-30 15:07:30,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:30,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:07:30,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:07:30,532 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,SelfDestructingSolverStorable2 [2023-08-30 15:07:30,533 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:07:30,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:30,533 INFO L85 PathProgramCache]: Analyzing trace with hash -980524645, now seen corresponding path program 1 times [2023-08-30 15:07:30,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:30,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757332537] [2023-08-30 15:07:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:30,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:07:30,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:30,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757332537] [2023-08-30 15:07:30,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757332537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:30,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:07:30,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:07:30,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378990341] [2023-08-30 15:07:30,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:30,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:07:30,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:30,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:07:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:07:30,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-08-30 15:07:30,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2023-08-30 15:07:30,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:30,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-08-30 15:07:30,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:31,084 INFO L130 PetriNetUnfolder]: 3326/5097 cut-off events. [2023-08-30 15:07:31,084 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2023-08-30 15:07:31,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10786 conditions, 5097 events. 3326/5097 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 27745 event pairs, 2015 based on Foata normal form. 0/3497 useless extension candidates. Maximal degree in co-relation 8621. Up to 3678 conditions per place. [2023-08-30 15:07:31,126 INFO L137 encePairwiseOnDemand]: 337/341 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-30 15:07:31,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 230 flow [2023-08-30 15:07:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:07:31,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:07:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-30 15:07:31,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053763440860215 [2023-08-30 15:07:31,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-30 15:07:31,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-30 15:07:31,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:31,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-30 15:07:31,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 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) [2023-08-30 15:07:31,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:31,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:31,133 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 103 flow. Second operand 3 states and 517 transitions. [2023-08-30 15:07:31,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 230 flow [2023-08-30 15:07:31,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 222 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 15:07:31,136 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 109 flow [2023-08-30 15:07:31,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-08-30 15:07:31,136 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-30 15:07:31,137 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 109 flow [2023-08-30 15:07:31,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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) [2023-08-30 15:07:31,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:31,137 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:07:31,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:07:31,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:07:31,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:31,138 INFO L85 PathProgramCache]: Analyzing trace with hash -996404790, now seen corresponding path program 2 times [2023-08-30 15:07:31,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:31,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456783746] [2023-08-30 15:07:31,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:31,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:07:31,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:31,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456783746] [2023-08-30 15:07:31,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456783746] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:07:31,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846120819] [2023-08-30 15:07:31,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:07:31,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:31,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:07:31,221 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) [2023-08-30 15:07:31,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:07:31,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:07:31,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:07:31,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:07:31,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:07:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:07:31,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:07:31,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846120819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:31,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:07:31,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:07:31,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478193522] [2023-08-30 15:07:31,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:31,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:07:31,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:31,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:07:31,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:07:31,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-08-30 15:07:31,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2023-08-30 15:07:31,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:31,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-08-30 15:07:31,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:31,735 INFO L130 PetriNetUnfolder]: 3326/5096 cut-off events. [2023-08-30 15:07:31,735 INFO L131 PetriNetUnfolder]: For 1008/1008 co-relation queries the response was YES. [2023-08-30 15:07:31,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11918 conditions, 5096 events. 3326/5096 cut-off events. For 1008/1008 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 26944 event pairs, 2855 based on Foata normal form. 1/3877 useless extension candidates. Maximal degree in co-relation 9524. Up to 5096 conditions per place. [2023-08-30 15:07:31,766 INFO L137 encePairwiseOnDemand]: 339/341 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-30 15:07:31,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 29 transitions, 157 flow [2023-08-30 15:07:31,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:07:31,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:07:31,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-30 15:07:31,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48778103616813295 [2023-08-30 15:07:31,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-30 15:07:31,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-30 15:07:31,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:31,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-30 15:07:31,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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) [2023-08-30 15:07:31,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:31,774 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:31,774 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 109 flow. Second operand 3 states and 499 transitions. [2023-08-30 15:07:31,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 29 transitions, 157 flow [2023-08-30 15:07:31,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 145 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 15:07:31,778 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 89 flow [2023-08-30 15:07:31,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-30 15:07:31,781 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-30 15:07:31,781 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 89 flow [2023-08-30 15:07:31,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2023-08-30 15:07:31,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:31,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:31,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:07:31,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:31,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:07:31,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:31,987 INFO L85 PathProgramCache]: Analyzing trace with hash -331492260, now seen corresponding path program 1 times [2023-08-30 15:07:31,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:31,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012771320] [2023-08-30 15:07:31,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:31,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:07:32,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:32,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012771320] [2023-08-30 15:07:32,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012771320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:32,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:07:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:07:32,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940829957] [2023-08-30 15:07:32,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:32,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:07:32,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:32,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:07:32,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:07:32,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-08-30 15:07:32,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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) [2023-08-30 15:07:32,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:32,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-08-30 15:07:32,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:32,381 INFO L130 PetriNetUnfolder]: 2956/4536 cut-off events. [2023-08-30 15:07:32,381 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-08-30 15:07:32,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10340 conditions, 4536 events. 2956/4536 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 25345 event pairs, 495 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 10331. Up to 3590 conditions per place. [2023-08-30 15:07:32,398 INFO L137 encePairwiseOnDemand]: 339/341 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-30 15:07:32,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 193 flow [2023-08-30 15:07:32,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:07:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:07:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2023-08-30 15:07:32,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49853372434017595 [2023-08-30 15:07:32,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 510 transitions. [2023-08-30 15:07:32,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 510 transitions. [2023-08-30 15:07:32,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:32,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 510 transitions. [2023-08-30 15:07:32,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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) [2023-08-30 15:07:32,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:32,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:32,404 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 89 flow. Second operand 3 states and 510 transitions. [2023-08-30 15:07:32,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 193 flow [2023-08-30 15:07:32,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:07:32,406 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 86 flow [2023-08-30 15:07:32,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-08-30 15:07:32,407 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2023-08-30 15:07:32,407 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 86 flow [2023-08-30 15:07:32,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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) [2023-08-30 15:07:32,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:32,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:32,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:07:32,408 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:07:32,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:32,409 INFO L85 PathProgramCache]: Analyzing trace with hash -331492258, now seen corresponding path program 1 times [2023-08-30 15:07:32,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:32,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961158577] [2023-08-30 15:07:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:32,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:07:32,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961158577] [2023-08-30 15:07:32,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961158577] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:07:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709884946] [2023-08-30 15:07:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:32,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:32,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:07:32,454 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) [2023-08-30 15:07:32,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:07:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:32,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 15:07:32,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:07:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:07:32,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:07:32,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709884946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:32,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:07:32,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 15:07:32,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956852055] [2023-08-30 15:07:32,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:32,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:07:32,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:07:32,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:07:32,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 341 [2023-08-30 15:07:32,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2023-08-30 15:07:32,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:32,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 341 [2023-08-30 15:07:32,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:32,854 INFO L130 PetriNetUnfolder]: 2365/3630 cut-off events. [2023-08-30 15:07:32,854 INFO L131 PetriNetUnfolder]: For 804/804 co-relation queries the response was YES. [2023-08-30 15:07:32,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8429 conditions, 3630 events. 2365/3630 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18077 event pairs, 2012 based on Foata normal form. 1/2879 useless extension candidates. Maximal degree in co-relation 8420. Up to 3630 conditions per place. [2023-08-30 15:07:32,869 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-30 15:07:32,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 142 flow [2023-08-30 15:07:32,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:07:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:07:32,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-08-30 15:07:32,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48191593352883677 [2023-08-30 15:07:32,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-08-30 15:07:32,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-08-30 15:07:32,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:32,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-08-30 15:07:32,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2023-08-30 15:07:32,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:32,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:32,875 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 86 flow. Second operand 3 states and 493 transitions. [2023-08-30 15:07:32,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 142 flow [2023-08-30 15:07:32,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 139 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 15:07:32,877 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 91 flow [2023-08-30 15:07:32,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-30 15:07:32,877 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-08-30 15:07:32,877 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 91 flow [2023-08-30 15:07:32,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 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) [2023-08-30 15:07:32,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:32,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:32,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:07:33,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:33,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:07:33,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:33,083 INFO L85 PathProgramCache]: Analyzing trace with hash 725007857, now seen corresponding path program 1 times [2023-08-30 15:07:33,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:33,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673925887] [2023-08-30 15:07:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:33,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:07:33,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:33,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673925887] [2023-08-30 15:07:33,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673925887] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:07:33,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558655929] [2023-08-30 15:07:33,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:33,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:33,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:07:33,131 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) [2023-08-30 15:07:33,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 15:07:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:33,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 15:07:33,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:07:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:07:33,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:07:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:07:33,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558655929] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:07:33,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:07:33,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-30 15:07:33,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670565272] [2023-08-30 15:07:33,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:07:33,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:07:33,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:33,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:07:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:07:33,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 341 [2023-08-30 15:07:33,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 91 flow. Second operand has 13 states, 13 states have (on average 149.69230769230768) internal successors, (1946), 13 states have internal predecessors, (1946), 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) [2023-08-30 15:07:33,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:33,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 341 [2023-08-30 15:07:33,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:34,235 INFO L130 PetriNetUnfolder]: 2667/4150 cut-off events. [2023-08-30 15:07:34,236 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2023-08-30 15:07:34,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9554 conditions, 4150 events. 2667/4150 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22821 event pairs, 786 based on Foata normal form. 32/3446 useless extension candidates. Maximal degree in co-relation 9543. Up to 1355 conditions per place. [2023-08-30 15:07:34,256 INFO L137 encePairwiseOnDemand]: 333/341 looper letters, 128 selfloop transitions, 13 changer transitions 7/148 dead transitions. [2023-08-30 15:07:34,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 148 transitions, 677 flow [2023-08-30 15:07:34,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 15:07:34,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 15:07:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2079 transitions. [2023-08-30 15:07:34,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46898263027295284 [2023-08-30 15:07:34,263 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2079 transitions. [2023-08-30 15:07:34,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2079 transitions. [2023-08-30 15:07:34,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:34,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2079 transitions. [2023-08-30 15:07:34,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 159.92307692307693) internal successors, (2079), 13 states have internal predecessors, (2079), 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) [2023-08-30 15:07:34,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 341.0) internal successors, (4774), 14 states have internal predecessors, (4774), 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) [2023-08-30 15:07:34,276 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 341.0) internal successors, (4774), 14 states have internal predecessors, (4774), 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) [2023-08-30 15:07:34,276 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 91 flow. Second operand 13 states and 2079 transitions. [2023-08-30 15:07:34,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 148 transitions, 677 flow [2023-08-30 15:07:34,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 148 transitions, 673 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:07:34,282 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 177 flow [2023-08-30 15:07:34,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=177, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2023-08-30 15:07:34,283 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-30 15:07:34,284 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 177 flow [2023-08-30 15:07:34,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 149.69230769230768) internal successors, (1946), 13 states have internal predecessors, (1946), 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) [2023-08-30 15:07:34,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:34,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:34,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 15:07:34,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:34,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:07:34,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:34,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1152482866, now seen corresponding path program 1 times [2023-08-30 15:07:34,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:34,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724719894] [2023-08-30 15:07:34,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:34,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:07:34,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:34,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724719894] [2023-08-30 15:07:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724719894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:34,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:07:34,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:07:34,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941058267] [2023-08-30 15:07:34,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:34,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:07:34,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:34,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:07:34,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:07:34,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-08-30 15:07:34,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2023-08-30 15:07:34,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:34,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-08-30 15:07:34,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:34,972 INFO L130 PetriNetUnfolder]: 3579/5546 cut-off events. [2023-08-30 15:07:34,972 INFO L131 PetriNetUnfolder]: For 8643/8643 co-relation queries the response was YES. [2023-08-30 15:07:34,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15681 conditions, 5546 events. 3579/5546 cut-off events. For 8643/8643 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 30841 event pairs, 2310 based on Foata normal form. 138/4808 useless extension candidates. Maximal degree in co-relation 15662. Up to 4151 conditions per place. [2023-08-30 15:07:35,002 INFO L137 encePairwiseOnDemand]: 337/341 looper letters, 55 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 15:07:35,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 391 flow [2023-08-30 15:07:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:07:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:07:35,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-30 15:07:35,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004887585532747 [2023-08-30 15:07:35,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-30 15:07:35,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-30 15:07:35,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:35,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-30 15:07:35,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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) [2023-08-30 15:07:35,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:35,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:35,009 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 177 flow. Second operand 3 states and 512 transitions. [2023-08-30 15:07:35,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 391 flow [2023-08-30 15:07:35,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 57 transitions, 359 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-30 15:07:35,018 INFO L231 Difference]: Finished difference. Result has 57 places, 37 transitions, 171 flow [2023-08-30 15:07:35,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2023-08-30 15:07:35,019 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 24 predicate places. [2023-08-30 15:07:35,019 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 171 flow [2023-08-30 15:07:35,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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) [2023-08-30 15:07:35,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:35,020 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:35,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 15:07:35,020 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:07:35,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:35,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1610230947, now seen corresponding path program 2 times [2023-08-30 15:07:35,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:35,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261178616] [2023-08-30 15:07:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:35,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:07:35,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:35,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261178616] [2023-08-30 15:07:35,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261178616] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:07:35,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370370883] [2023-08-30 15:07:35,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:07:35,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:35,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:07:35,081 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) [2023-08-30 15:07:35,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 15:07:35,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:07:35,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:07:35,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:07:35,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:07:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:07:35,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:07:35,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370370883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:35,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:07:35,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-08-30 15:07:35,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716140987] [2023-08-30 15:07:35,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:35,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:07:35,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:35,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:07:35,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:07:35,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-08-30 15:07:35,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 37 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2023-08-30 15:07:35,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:35,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-08-30 15:07:35,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:35,505 INFO L130 PetriNetUnfolder]: 3003/4640 cut-off events. [2023-08-30 15:07:35,505 INFO L131 PetriNetUnfolder]: For 5631/5631 co-relation queries the response was YES. [2023-08-30 15:07:35,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12721 conditions, 4640 events. 3003/4640 cut-off events. For 5631/5631 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 24186 event pairs, 2646 based on Foata normal form. 120/4536 useless extension candidates. Maximal degree in co-relation 12701. Up to 4640 conditions per place. [2023-08-30 15:07:35,527 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 33 selfloop transitions, 1 changer transitions 1/35 dead transitions. [2023-08-30 15:07:35,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 35 transitions, 217 flow [2023-08-30 15:07:35,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:07:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:07:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-30 15:07:35,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858260019550342 [2023-08-30 15:07:35,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-30 15:07:35,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-30 15:07:35,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:35,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-30 15:07:35,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 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) [2023-08-30 15:07:35,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:35,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2023-08-30 15:07:35,534 INFO L175 Difference]: Start difference. First operand has 57 places, 37 transitions, 171 flow. Second operand 3 states and 497 transitions. [2023-08-30 15:07:35,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 35 transitions, 217 flow [2023-08-30 15:07:35,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 35 transitions, 207 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 15:07:35,542 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 137 flow [2023-08-30 15:07:35,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2023-08-30 15:07:35,542 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-08-30 15:07:35,543 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 137 flow [2023-08-30 15:07:35,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2023-08-30 15:07:35,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:07:35,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:35,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:07:35,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:35,748 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-30 15:07:35,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:07:35,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1367231076, now seen corresponding path program 1 times [2023-08-30 15:07:35,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:07:35,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335378257] [2023-08-30 15:07:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:35,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:07:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:07:35,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:07:35,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335378257] [2023-08-30 15:07:35,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335378257] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:07:35,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122214586] [2023-08-30 15:07:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:07:35,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:35,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:07:35,814 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) [2023-08-30 15:07:35,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:07:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:07:35,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:07:35,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:07:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 15:07:35,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:07:35,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122214586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:07:35,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:07:35,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 15:07:35,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482453015] [2023-08-30 15:07:35,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:07:35,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:07:35,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:07:35,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:07:35,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:07:35,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 341 [2023-08-30 15:07:35,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 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) [2023-08-30 15:07:35,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:07:35,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 341 [2023-08-30 15:07:35,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:07:36,109 INFO L130 PetriNetUnfolder]: 1743/2708 cut-off events. [2023-08-30 15:07:36,110 INFO L131 PetriNetUnfolder]: For 1282/1282 co-relation queries the response was YES. [2023-08-30 15:07:36,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7409 conditions, 2708 events. 1743/2708 cut-off events. For 1282/1282 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13204 event pairs, 636 based on Foata normal form. 0/2708 useless extension candidates. Maximal degree in co-relation 7393. Up to 1197 conditions per place. [2023-08-30 15:07:36,115 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2023-08-30 15:07:36,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 409 flow [2023-08-30 15:07:36,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:07:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:07:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 673 transitions. [2023-08-30 15:07:36,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934017595307918 [2023-08-30 15:07:36,117 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 673 transitions. [2023-08-30 15:07:36,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 673 transitions. [2023-08-30 15:07:36,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:07:36,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 673 transitions. [2023-08-30 15:07:36,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 168.25) internal successors, (673), 4 states have internal predecessors, (673), 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) [2023-08-30 15:07:36,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 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) [2023-08-30 15:07:36,122 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 341.0) internal successors, (1705), 5 states have internal predecessors, (1705), 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) [2023-08-30 15:07:36,122 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 137 flow. Second operand 4 states and 673 transitions. [2023-08-30 15:07:36,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 409 flow [2023-08-30 15:07:36,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 406 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 15:07:36,127 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-08-30 15:07:36,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-08-30 15:07:36,128 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2023-08-30 15:07:36,128 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-08-30 15:07:36,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 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) [2023-08-30 15:07:36,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-08-30 15:07:36,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-30 15:07:36,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-30 15:07:36,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-30 15:07:36,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-30 15:07:36,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-30 15:07:36,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-08-30 15:07:36,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2023-08-30 15:07:36,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2023-08-30 15:07:36,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-30 15:07:36,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-30 15:07:36,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-30 15:07:36,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-30 15:07:36,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 15:07:36,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:07:36,339 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:07:36,342 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 15:07:36,342 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 15:07:36,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:07:36 BasicIcfg [2023-08-30 15:07:36,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 15:07:36,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 15:07:36,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 15:07:36,345 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 15:07:36,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:07:21" (3/4) ... [2023-08-30 15:07:36,348 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 15:07:36,351 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 15:07:36,351 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 15:07:36,351 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 15:07:36,356 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-08-30 15:07:36,356 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 15:07:36,356 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 15:07:36,356 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 15:07:36,385 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 15:07:36,385 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 15:07:36,386 INFO L158 Benchmark]: Toolchain (without parser) took 15385.44ms. Allocated memory was 94.4MB in the beginning and 541.1MB in the end (delta: 446.7MB). Free memory was 75.3MB in the beginning and 378.9MB in the end (delta: -303.6MB). Peak memory consumption was 142.0MB. Max. memory is 16.1GB. [2023-08-30 15:07:36,386 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 65.0MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:07:36,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.17ms. Allocated memory is still 94.4MB. Free memory was 75.0MB in the beginning and 63.3MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 15:07:36,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.09ms. Allocated memory is still 94.4MB. Free memory was 63.3MB in the beginning and 61.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:07:36,387 INFO L158 Benchmark]: Boogie Preprocessor took 55.20ms. Allocated memory is still 94.4MB. Free memory was 61.4MB in the beginning and 59.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 15:07:36,387 INFO L158 Benchmark]: RCFGBuilder took 565.38ms. Allocated memory is still 94.4MB. Free memory was 59.6MB in the beginning and 60.0MB in the end (delta: -410.0kB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2023-08-30 15:07:36,388 INFO L158 Benchmark]: TraceAbstraction took 14382.31ms. Allocated memory was 94.4MB in the beginning and 541.1MB in the end (delta: 446.7MB). Free memory was 59.3MB in the beginning and 383.1MB in the end (delta: -323.8MB). Peak memory consumption was 357.2MB. Max. memory is 16.1GB. [2023-08-30 15:07:36,388 INFO L158 Benchmark]: Witness Printer took 40.42ms. Allocated memory is still 541.1MB. Free memory was 382.0MB in the beginning and 378.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 15:07:36,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 65.0MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.17ms. Allocated memory is still 94.4MB. Free memory was 75.0MB in the beginning and 63.3MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.09ms. Allocated memory is still 94.4MB. Free memory was 63.3MB in the beginning and 61.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.20ms. Allocated memory is still 94.4MB. Free memory was 61.4MB in the beginning and 59.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 565.38ms. Allocated memory is still 94.4MB. Free memory was 59.6MB in the beginning and 60.0MB in the end (delta: -410.0kB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * TraceAbstraction took 14382.31ms. Allocated memory was 94.4MB in the beginning and 541.1MB in the end (delta: 446.7MB). Free memory was 59.3MB in the beginning and 383.1MB in the end (delta: -323.8MB). Peak memory consumption was 357.2MB. Max. memory is 16.1GB. * Witness Printer took 40.42ms. Allocated memory is still 541.1MB. Free memory was 382.0MB in the beginning and 378.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 154 PlacesBefore, 33 PlacesAfterwards, 155 TransitionsBefore, 26 TransitionsAfterwards, 1604 CoEnabledTransitionPairs, 8 FixpointIterations, 89 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 26 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 162 TotalNumberOfCompositions, 2248 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1553, independent: 1492, independent conditional: 0, independent unconditional: 1492, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 837, independent: 818, independent conditional: 0, independent unconditional: 818, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1553, independent: 674, independent conditional: 0, independent unconditional: 674, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 837, unknown conditional: 0, unknown unconditional: 837] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 205 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.2s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 973 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 835 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 123 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1520 IncrementalHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 10 mSDtfsCounter, 1520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=8, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 118 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 261 SizeOfPredicates, 9 NumberOfNonLiveVariables, 925 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 20 InterpolantComputations, 9 PerfectInterpolantSequences, 29/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 15:07:36,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE