./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled-atomic.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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-misc-2-unrolled-atomic.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 fafa05b72e6925548935fa790281a49d4bca5cad8ef15917dd3e0ea4e3ccb38f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:14:01,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:14:01,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:14:01,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:14:01,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:14:01,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:14:01,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:14:01,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:14:01,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:14:01,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:14:01,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:14:01,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:14:01,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:14:01,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:14:01,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:14:01,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:14:01,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:14:01,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:14:01,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:14:01,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:14:01,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:14:01,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:14:01,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:14:01,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:14:01,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:14:01,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:14:01,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:14:01,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:14:01,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:14:01,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:14:01,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:14:01,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:14:01,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:14:01,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:14:01,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:14:01,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:14:01,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:14:01,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:14:01,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:14:01,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:14:01,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:14:01,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:14:01,260 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:14:01,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:14:01,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:14:01,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:14:01,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:14:01,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:14:01,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:14:01,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:14:01,264 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:14:01,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:14:01,265 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:14:01,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:14:01,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:14:01,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:14:01,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:14:01,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:14:01,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:14:01,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:14:01,266 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:14:01,266 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:14:01,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:14:01,267 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:14:01,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:14:01,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:14:01,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:14:01,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:14:01,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:14:01,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:14:01,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:14:01,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:14:01,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:14:01,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:14:01,269 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:14:01,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:14:01,269 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:14:01,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:14:01,270 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:14:01,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fafa05b72e6925548935fa790281a49d4bca5cad8ef15917dd3e0ea4e3ccb38f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:14:01,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:14:01,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:14:01,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:14:01,578 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:14:01,579 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:14:01,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2023-08-30 11:14:02,803 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:14:02,985 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:14:02,986 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled-atomic.wvr.c [2023-08-30 11:14:02,992 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca79c155a/426a8cb45a32453e96be8d75315c9075/FLAGa4b9ddedc [2023-08-30 11:14:03,012 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca79c155a/426a8cb45a32453e96be8d75315c9075 [2023-08-30 11:14:03,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:14:03,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:14:03,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:14:03,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:14:03,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:14:03,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd9c3d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03, skipping insertion in model container [2023-08-30 11:14:03,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:14:03,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:14:03,223 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-misc-2-unrolled-atomic.wvr.c[2252,2265] [2023-08-30 11:14:03,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:14:03,239 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:14:03,269 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-misc-2-unrolled-atomic.wvr.c[2252,2265] [2023-08-30 11:14:03,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:14:03,277 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:14:03,277 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:14:03,283 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:14:03,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03 WrapperNode [2023-08-30 11:14:03,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:14:03,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:14:03,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:14:03,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:14:03,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,332 INFO L138 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2023-08-30 11:14:03,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:14:03,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:14:03,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:14:03,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:14:03,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,373 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:14:03,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:14:03,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:14:03,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:14:03,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03" (1/1) ... [2023-08-30 11:14:03,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:14:03,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:14:03,422 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 11:14:03,443 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 11:14:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:14:03,459 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:14:03,459 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:14:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:14:03,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:14:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:14:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:14:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:14:03,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:14:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:14:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:14:03,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:14:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:14:03,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:14:03,463 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 11:14:03,544 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:14:03,546 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:14:03,780 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:14:03,964 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:14:03,965 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 11:14:03,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:14:03 BoogieIcfgContainer [2023-08-30 11:14:03,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:14:03,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:14:03,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:14:03,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:14:03,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:14:03" (1/3) ... [2023-08-30 11:14:03,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746c4cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:14:03, skipping insertion in model container [2023-08-30 11:14:03,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:14:03" (2/3) ... [2023-08-30 11:14:03,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746c4cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:14:03, skipping insertion in model container [2023-08-30 11:14:03,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:14:03" (3/3) ... [2023-08-30 11:14:03,974 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled-atomic.wvr.c [2023-08-30 11:14:03,980 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:14:03,988 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:14:03,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-30 11:14:04,006 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:14:04,054 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 11:14:04,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 113 transitions, 242 flow [2023-08-30 11:14:04,162 INFO L130 PetriNetUnfolder]: 7/111 cut-off events. [2023-08-30 11:14:04,163 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:14:04,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 111 events. 7/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 133 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-30 11:14:04,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 113 transitions, 242 flow [2023-08-30 11:14:04,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 95 transitions, 199 flow [2023-08-30 11:14:04,178 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:14:04,189 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 95 transitions, 199 flow [2023-08-30 11:14:04,195 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 95 transitions, 199 flow [2023-08-30 11:14:04,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 95 transitions, 199 flow [2023-08-30 11:14:04,230 INFO L130 PetriNetUnfolder]: 6/95 cut-off events. [2023-08-30 11:14:04,233 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 11:14:04,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 95 events. 6/95 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 131 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-30 11:14:04,237 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-08-30 11:14:07,988 INFO L134 LiptonReduction]: Checked pairs total: 1666 [2023-08-30 11:14:07,988 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-30 11:14:08,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:14:08,005 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;@7e08da9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:14:08,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-08-30 11:14:08,008 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 11:14:08,008 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:14:08,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:14:08,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:14:08,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 11:14:08,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:14:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash 517735, now seen corresponding path program 1 times [2023-08-30 11:14:08,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:14:08,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728471211] [2023-08-30 11:14:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:14:08,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:14:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:14:08,328 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 11:14:08,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:14:08,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728471211] [2023-08-30 11:14:08,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728471211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:14:08,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:14:08,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:14:08,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323112320] [2023-08-30 11:14:08,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:14:08,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:14:08,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:14:08,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:14:08,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:14:08,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 222 [2023-08-30 11:14:08,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 11:14:08,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:14:08,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 222 [2023-08-30 11:14:08,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:14:08,449 INFO L130 PetriNetUnfolder]: 133/230 cut-off events. [2023-08-30 11:14:08,450 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 11:14:08,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 230 events. 133/230 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 820 event pairs, 105 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 420. Up to 230 conditions per place. [2023-08-30 11:14:08,453 INFO L137 encePairwiseOnDemand]: 209/222 looper letters, 18 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-30 11:14:08,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 19 transitions, 85 flow [2023-08-30 11:14:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:14:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:14:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-30 11:14:08,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069069069069069 [2023-08-30 11:14:08,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-30 11:14:08,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-30 11:14:08,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:14:08,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-30 11:14:08,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 11:14:08,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 11:14:08,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 11:14:08,479 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 71 flow. Second operand 3 states and 271 transitions. [2023-08-30 11:14:08,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 19 transitions, 85 flow [2023-08-30 11:14:08,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 11:14:08,483 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-08-30 11:14:08,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-08-30 11:14:08,487 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -13 predicate places. [2023-08-30 11:14:08,487 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-08-30 11:14:08,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 11:14:08,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:14:08,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:14:08,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:14:08,489 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 11:14:08,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:14:08,489 INFO L85 PathProgramCache]: Analyzing trace with hash 517842, now seen corresponding path program 1 times [2023-08-30 11:14:08,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:14:08,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5508501] [2023-08-30 11:14:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:14:08,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:14:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:14:08,561 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 11:14:08,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:14:08,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5508501] [2023-08-30 11:14:08,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5508501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:14:08,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:14:08,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:14:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559414730] [2023-08-30 11:14:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:14:08,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:14:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:14:08,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:14:08,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:14:08,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 222 [2023-08-30 11:14:08,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 11:14:08,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:14:08,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 222 [2023-08-30 11:14:08,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:14:08,692 INFO L130 PetriNetUnfolder]: 239/404 cut-off events. [2023-08-30 11:14:08,693 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 11:14:08,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 404 events. 239/404 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 1805 event pairs, 69 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 827. Up to 257 conditions per place. [2023-08-30 11:14:08,699 INFO L137 encePairwiseOnDemand]: 218/222 looper letters, 32 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-08-30 11:14:08,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 35 transitions, 149 flow [2023-08-30 11:14:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:14:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:14:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-08-30 11:14:08,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2023-08-30 11:14:08,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-08-30 11:14:08,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-08-30 11:14:08,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:14:08,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-08-30 11:14:08,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 11:14:08,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 11:14:08,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 11:14:08,712 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 288 transitions. [2023-08-30 11:14:08,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 35 transitions, 149 flow [2023-08-30 11:14:08,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:14:08,714 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 62 flow [2023-08-30 11:14:08,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-08-30 11:14:08,716 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -11 predicate places. [2023-08-30 11:14:08,716 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 62 flow [2023-08-30 11:14:08,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 11:14:08,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:14:08,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:14:08,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 11:14:08,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 11:14:08,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:14:08,719 INFO L85 PathProgramCache]: Analyzing trace with hash 517841, now seen corresponding path program 1 times [2023-08-30 11:14:08,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:14:08,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428557896] [2023-08-30 11:14:08,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:14:08,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:14:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:14:08,806 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 11:14:08,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:14:08,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428557896] [2023-08-30 11:14:08,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428557896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:14:08,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:14:08,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:14:08,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070719797] [2023-08-30 11:14:08,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:14:08,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:14:08,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:14:08,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:14:08,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:14:08,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 222 [2023-08-30 11:14:08,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:08,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:14:08,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 222 [2023-08-30 11:14:08,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:14:08,880 INFO L130 PetriNetUnfolder]: 78/147 cut-off events. [2023-08-30 11:14:08,880 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 11:14:08,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 147 events. 78/147 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 495 event pairs, 23 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 341. Up to 74 conditions per place. [2023-08-30 11:14:08,882 INFO L137 encePairwiseOnDemand]: 213/222 looper letters, 30 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2023-08-30 11:14:08,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 162 flow [2023-08-30 11:14:08,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:14:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:14:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-08-30 11:14:08,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2023-08-30 11:14:08,884 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-08-30 11:14:08,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-08-30 11:14:08,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:14:08,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-08-30 11:14:08,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 11:14:08,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 11:14:08,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 11:14:08,888 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 62 flow. Second operand 3 states and 285 transitions. [2023-08-30 11:14:08,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 162 flow [2023-08-30 11:14:08,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:14:08,889 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 92 flow [2023-08-30 11:14:08,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-08-30 11:14:08,891 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -9 predicate places. [2023-08-30 11:14:08,894 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 92 flow [2023-08-30 11:14:08,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:08,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:14:08,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 11:14:08,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 11:14:08,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 11:14:08,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:14:08,896 INFO L85 PathProgramCache]: Analyzing trace with hash 16053616, now seen corresponding path program 1 times [2023-08-30 11:14:08,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:14:08,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109689039] [2023-08-30 11:14:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:14:08,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:14:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:14:09,009 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 11:14:09,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:14:09,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109689039] [2023-08-30 11:14:09,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109689039] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:14:09,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491092899] [2023-08-30 11:14:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:14:09,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:14:09,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:14:09,017 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 11:14:09,043 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 11:14:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:14:09,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:14:09,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:14:09,123 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 11:14:09,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:14:09,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491092899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:14:09,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:14:09,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-30 11:14:09,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515375911] [2023-08-30 11:14:09,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:14:09,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:14:09,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:14:09,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:14:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:14:09,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 222 [2023-08-30 11:14:09,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:09,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:14:09,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 222 [2023-08-30 11:14:09,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:14:09,201 INFO L130 PetriNetUnfolder]: 64/119 cut-off events. [2023-08-30 11:14:09,201 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-30 11:14:09,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 119 events. 64/119 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 337 event pairs, 42 based on Foata normal form. 6/109 useless extension candidates. Maximal degree in co-relation 301. Up to 119 conditions per place. [2023-08-30 11:14:09,202 INFO L137 encePairwiseOnDemand]: 220/222 looper letters, 15 selfloop transitions, 1 changer transitions 1/17 dead transitions. [2023-08-30 11:14:09,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 97 flow [2023-08-30 11:14:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:14:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:14:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-08-30 11:14:09,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024024024024024 [2023-08-30 11:14:09,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-08-30 11:14:09,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-08-30 11:14:09,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:14:09,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-08-30 11:14:09,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 11:14:09,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 11:14:09,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 11:14:09,218 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 92 flow. Second operand 3 states and 268 transitions. [2023-08-30 11:14:09,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 97 flow [2023-08-30 11:14:09,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 93 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:14:09,219 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 59 flow [2023-08-30 11:14:09,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2023-08-30 11:14:09,220 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -13 predicate places. [2023-08-30 11:14:09,220 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 59 flow [2023-08-30 11:14:09,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:09,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:14:09,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 11:14:09,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:14:09,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:14:09,422 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 11:14:09,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:14:09,423 INFO L85 PathProgramCache]: Analyzing trace with hash 497680574, now seen corresponding path program 1 times [2023-08-30 11:14:09,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:14:09,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943896915] [2023-08-30 11:14:09,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:14:09,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:14:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:14:09,473 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 11:14:09,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:14:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943896915] [2023-08-30 11:14:09,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943896915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:14:09,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:14:09,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:14:09,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857083153] [2023-08-30 11:14:09,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:14:09,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:14:09,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:14:09,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:14:09,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:14:09,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 222 [2023-08-30 11:14:09,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:09,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:14:09,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 222 [2023-08-30 11:14:09,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:14:09,548 INFO L130 PetriNetUnfolder]: 64/119 cut-off events. [2023-08-30 11:14:09,548 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-08-30 11:14:09,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 119 events. 64/119 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 337 event pairs, 9 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 289. Up to 86 conditions per place. [2023-08-30 11:14:09,549 INFO L137 encePairwiseOnDemand]: 219/222 looper letters, 21 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2023-08-30 11:14:09,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 23 transitions, 124 flow [2023-08-30 11:14:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:14:09,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:14:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-08-30 11:14:09,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099099099099099 [2023-08-30 11:14:09,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-08-30 11:14:09,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-08-30 11:14:09,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:14:09,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-08-30 11:14:09,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 11:14:09,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 11:14:09,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 11:14:09,554 INFO L175 Difference]: Start difference. First operand has 23 places, 16 transitions, 59 flow. Second operand 3 states and 273 transitions. [2023-08-30 11:14:09,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 23 transitions, 124 flow [2023-08-30 11:14:09,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 23 transitions, 123 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:14:09,557 INFO L231 Difference]: Finished difference. Result has 24 places, 17 transitions, 70 flow [2023-08-30 11:14:09,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2023-08-30 11:14:09,560 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -12 predicate places. [2023-08-30 11:14:09,560 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 70 flow [2023-08-30 11:14:09,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:09,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:14:09,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:14:09,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:14:09,561 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-08-30 11:14:09,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:14:09,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1751770985, now seen corresponding path program 1 times [2023-08-30 11:14:09,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:14:09,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059133488] [2023-08-30 11:14:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:14:09,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:14:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:14:09,633 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 11:14:09,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:14:09,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059133488] [2023-08-30 11:14:09,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059133488] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:14:09,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243095680] [2023-08-30 11:14:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:14:09,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:14:09,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:14:09,636 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 11:14:09,666 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 11:14:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:14:09,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:14:09,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:14:09,716 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 11:14:09,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:14:09,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243095680] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:14:09,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:14:09,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-30 11:14:09,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913188654] [2023-08-30 11:14:09,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:14:09,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:14:09,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:14:09,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:14:09,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:14:09,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 222 [2023-08-30 11:14:09,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:09,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:14:09,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 222 [2023-08-30 11:14:09,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:14:09,747 INFO L130 PetriNetUnfolder]: 41/74 cut-off events. [2023-08-30 11:14:09,747 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 11:14:09,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 74 events. 41/74 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 148 event pairs, 23 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 203. Up to 74 conditions per place. [2023-08-30 11:14:09,748 INFO L137 encePairwiseOnDemand]: 220/222 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-30 11:14:09,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 69 flow [2023-08-30 11:14:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:14:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:14:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-08-30 11:14:09,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3948948948948949 [2023-08-30 11:14:09,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-08-30 11:14:09,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-08-30 11:14:09,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:14:09,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-08-30 11:14:09,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 11:14:09,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 11:14:09,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 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 11:14:09,756 INFO L175 Difference]: Start difference. First operand has 24 places, 17 transitions, 70 flow. Second operand 3 states and 263 transitions. [2023-08-30 11:14:09,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 69 flow [2023-08-30 11:14:09,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 66 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:14:09,757 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2023-08-30 11:14:09,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2023-08-30 11:14:09,760 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -16 predicate places. [2023-08-30 11:14:09,760 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2023-08-30 11:14:09,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:14:09,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 42 remaining) [2023-08-30 11:14:09,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 42 remaining) [2023-08-30 11:14:09,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 42 remaining) [2023-08-30 11:14:09,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 42 remaining) [2023-08-30 11:14:09,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 42 remaining) [2023-08-30 11:14:09,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 42 remaining) [2023-08-30 11:14:09,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 42 remaining) [2023-08-30 11:14:09,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 42 remaining) [2023-08-30 11:14:09,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 42 remaining) [2023-08-30 11:14:09,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 42 remaining) [2023-08-30 11:14:09,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 42 remaining) [2023-08-30 11:14:09,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 42 remaining) [2023-08-30 11:14:09,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 42 remaining) [2023-08-30 11:14:09,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 42 remaining) [2023-08-30 11:14:09,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 42 remaining) [2023-08-30 11:14:09,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 42 remaining) [2023-08-30 11:14:09,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 42 remaining) [2023-08-30 11:14:09,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 42 remaining) [2023-08-30 11:14:09,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 42 remaining) [2023-08-30 11:14:09,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 42 remaining) [2023-08-30 11:14:09,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 42 remaining) [2023-08-30 11:14:09,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 42 remaining) [2023-08-30 11:14:09,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 42 remaining) [2023-08-30 11:14:09,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 42 remaining) [2023-08-30 11:14:09,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 42 remaining) [2023-08-30 11:14:09,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 42 remaining) [2023-08-30 11:14:09,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 42 remaining) [2023-08-30 11:14:09,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 42 remaining) [2023-08-30 11:14:09,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 42 remaining) [2023-08-30 11:14:09,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 42 remaining) [2023-08-30 11:14:09,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 42 remaining) [2023-08-30 11:14:09,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 42 remaining) [2023-08-30 11:14:09,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 42 remaining) [2023-08-30 11:14:09,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 42 remaining) [2023-08-30 11:14:09,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 42 remaining) [2023-08-30 11:14:09,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 42 remaining) [2023-08-30 11:14:09,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 42 remaining) [2023-08-30 11:14:09,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 42 remaining) [2023-08-30 11:14:09,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 42 remaining) [2023-08-30 11:14:09,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 42 remaining) [2023-08-30 11:14:09,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 42 remaining) [2023-08-30 11:14:09,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 42 remaining) [2023-08-30 11:14:09,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 11:14:09,978 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,SelfDestructingSolverStorable5 [2023-08-30 11:14:09,979 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-30 11:14:09,983 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 11:14:09,984 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 11:14:09,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:14:09 BasicIcfg [2023-08-30 11:14:09,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 11:14:09,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 11:14:09,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 11:14:09,990 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 11:14:09,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:14:03" (3/4) ... [2023-08-30 11:14:09,993 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 11:14:09,997 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 11:14:09,998 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 11:14:10,003 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-30 11:14:10,004 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 11:14:10,004 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 11:14:10,004 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 11:14:10,039 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 11:14:10,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 11:14:10,040 INFO L158 Benchmark]: Toolchain (without parser) took 7023.08ms. Allocated memory was 75.5MB in the beginning and 111.1MB in the end (delta: 35.7MB). Free memory was 55.0MB in the beginning and 41.5MB in the end (delta: 13.4MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2023-08-30 11:14:10,040 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:14:10,041 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.57ms. Allocated memory is still 75.5MB. Free memory was 54.7MB in the beginning and 43.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 11:14:10,041 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.63ms. Allocated memory is still 75.5MB. Free memory was 43.8MB in the beginning and 42.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:14:10,041 INFO L158 Benchmark]: Boogie Preprocessor took 49.07ms. Allocated memory is still 75.5MB. Free memory was 42.1MB in the beginning and 40.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 11:14:10,041 INFO L158 Benchmark]: RCFGBuilder took 583.77ms. Allocated memory is still 75.5MB. Free memory was 40.9MB in the beginning and 30.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2023-08-30 11:14:10,042 INFO L158 Benchmark]: TraceAbstraction took 6020.29ms. Allocated memory was 75.5MB in the beginning and 111.1MB in the end (delta: 35.7MB). Free memory was 30.3MB in the beginning and 44.7MB in the end (delta: -14.4MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2023-08-30 11:14:10,042 INFO L158 Benchmark]: Witness Printer took 49.81ms. Allocated memory is still 111.1MB. Free memory was 44.7MB in the beginning and 41.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 11:14:10,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.57ms. Allocated memory is still 75.5MB. Free memory was 54.7MB in the beginning and 43.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.63ms. Allocated memory is still 75.5MB. Free memory was 43.8MB in the beginning and 42.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.07ms. Allocated memory is still 75.5MB. Free memory was 42.1MB in the beginning and 40.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 583.77ms. Allocated memory is still 75.5MB. Free memory was 40.9MB in the beginning and 30.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6020.29ms. Allocated memory was 75.5MB in the beginning and 111.1MB in the end (delta: 35.7MB). Free memory was 30.3MB in the beginning and 44.7MB in the end (delta: -14.4MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * Witness Printer took 49.81ms. Allocated memory is still 111.1MB. Free memory was 44.7MB in the beginning and 41.5MB 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: 3.8s, 96 PlacesBefore, 36 PlacesAfterwards, 95 TransitionsBefore, 31 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 7 FixpointIterations, 43 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 109 TotalNumberOfCompositions, 1666 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1666, independent: 1666, independent conditional: 0, independent unconditional: 1666, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 503, independent: 503, independent conditional: 0, independent unconditional: 503, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1666, independent: 1163, independent conditional: 0, independent unconditional: 1163, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 503, unknown conditional: 0, unknown unconditional: 503] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 40]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 45]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: 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: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: 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 5 procedures, 143 locations, 42 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: 5.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 157 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 90 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 199 IncrementalHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 18 mSDtfsCounter, 199 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=3, InterpolantAutomatonStates: 18, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 94 SizeOfPredicates, 0 NumberOfNonLiveVariables, 172 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 2/4 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 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 11:14:10,063 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