./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/pthread-ext/36_stack_cas_p0_vs_concur.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b --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 16:35:17,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:35:17,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:35:17,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:35:17,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:35:17,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:35:17,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:35:17,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:35:17,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:35:17,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:35:17,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:35:17,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:35:17,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:35:17,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:35:17,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:35:17,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:35:17,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:35:17,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:35:17,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:35:17,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:35:17,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:35:17,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:35:17,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:35:17,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:35:17,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:35:17,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:35:17,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:35:17,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:35:17,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:35:17,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:35:17,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:35:17,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:35:17,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:35:17,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:35:17,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:35:17,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:35:17,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:35:17,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:35:17,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:35:17,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:35:17,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:35:17,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:35:17,253 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:35:17,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:35:17,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:35:17,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:35:17,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:35:17,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:35:17,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:35:17,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:35:17,256 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:35:17,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:35:17,257 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:35:17,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:35:17,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:35:17,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:35:17,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:35:17,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:35:17,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:35:17,258 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:35:17,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:35:17,259 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:35:17,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:35:17,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:35:17,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:35:17,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:35:17,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:35:17,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:35:17,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:35:17,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:35:17,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:35:17,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:35:17,261 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:35:17,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:35:17,261 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:35:17,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:35:17,261 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:35:17,262 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:35:17,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:35:17,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:35:17,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:35:17,565 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:35:17,566 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:35:17,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-08-30 16:35:18,702 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:35:18,931 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:35:18,932 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-08-30 16:35:18,945 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f99d61857/d70ce8d3c1ea4c6cb50f6fa9346d0b7a/FLAG5ecd9136c [2023-08-30 16:35:18,957 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f99d61857/d70ce8d3c1ea4c6cb50f6fa9346d0b7a [2023-08-30 16:35:18,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:35:18,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:35:18,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:35:18,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:35:18,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:35:18,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:35:18" (1/1) ... [2023-08-30 16:35:18,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@753ae14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:18, skipping insertion in model container [2023-08-30 16:35:18,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:35:18" (1/1) ... [2023-08-30 16:35:18,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:35:19,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:35:19,286 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2023-08-30 16:35:19,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:35:19,302 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:35:19,360 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2023-08-30 16:35:19,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:35:19,402 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:35:19,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19 WrapperNode [2023-08-30 16:35:19,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:35:19,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:35:19,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:35:19,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:35:19,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19" (1/1) ... [2023-08-30 16:35:19,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19" (1/1) ... [2023-08-30 16:35:19,467 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 102 [2023-08-30 16:35:19,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:35:19,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:35:19,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:35:19,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:35:19,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19" (1/1) ... [2023-08-30 16:35:19,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19" (1/1) ... [2023-08-30 16:35:19,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19" (1/1) ... [2023-08-30 16:35:19,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19" (1/1) ... [2023-08-30 16:35:19,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19" (1/1) ... [2023-08-30 16:35:19,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19" (1/1) ... [2023-08-30 16:35:19,506 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19" (1/1) ... [2023-08-30 16:35:19,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19" (1/1) ... [2023-08-30 16:35:19,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:35:19,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:35:19,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:35:19,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:35:19,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19" (1/1) ... [2023-08-30 16:35:19,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:35:19,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:35:19,550 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 16:35:19,579 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 16:35:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 16:35:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 16:35:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 16:35:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:35:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:35:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:35:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:35:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:35:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:35:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:35:19,595 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 16:35:19,749 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:35:19,750 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:35:19,931 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:35:20,011 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:35:20,012 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 16:35:20,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:35:20 BoogieIcfgContainer [2023-08-30 16:35:20,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:35:20,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:35:20,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:35:20,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:35:20,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:35:18" (1/3) ... [2023-08-30 16:35:20,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:35:20, skipping insertion in model container [2023-08-30 16:35:20,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:35:19" (2/3) ... [2023-08-30 16:35:20,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:35:20, skipping insertion in model container [2023-08-30 16:35:20,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:35:20" (3/3) ... [2023-08-30 16:35:20,025 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-08-30 16:35:20,032 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:35:20,041 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:35:20,041 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 16:35:20,041 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:35:20,120 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:35:20,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 91 transitions, 187 flow [2023-08-30 16:35:20,255 INFO L130 PetriNetUnfolder]: 10/101 cut-off events. [2023-08-30 16:35:20,256 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:35:20,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 10/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-08-30 16:35:20,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 91 transitions, 187 flow [2023-08-30 16:35:20,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 91 transitions, 187 flow [2023-08-30 16:35:20,270 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:35:20,285 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 91 transitions, 187 flow [2023-08-30 16:35:20,289 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 91 transitions, 187 flow [2023-08-30 16:35:20,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 91 transitions, 187 flow [2023-08-30 16:35:20,322 INFO L130 PetriNetUnfolder]: 10/101 cut-off events. [2023-08-30 16:35:20,323 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:35:20,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 10/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-08-30 16:35:20,326 INFO L119 LiptonReduction]: Number of co-enabled transitions 1612 [2023-08-30 16:35:22,026 INFO L134 LiptonReduction]: Checked pairs total: 2202 [2023-08-30 16:35:22,027 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-30 16:35:22,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:35:22,044 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;@1c9708f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:35:22,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-30 16:35:22,049 INFO L130 PetriNetUnfolder]: 3/23 cut-off events. [2023-08-30 16:35:22,049 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:35:22,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:35:22,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:35:22,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-30 16:35:22,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:35:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash -210271656, now seen corresponding path program 1 times [2023-08-30 16:35:22,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:35:22,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765937249] [2023-08-30 16:35:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:35:22,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:35:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:35:22,242 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 16:35:22,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:35:22,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765937249] [2023-08-30 16:35:22,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765937249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:35:22,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:35:22,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:35:22,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777693097] [2023-08-30 16:35:22,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:35:22,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 16:35:22,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:35:22,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 16:35:22,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 16:35:22,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 171 [2023-08-30 16:35:22,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 28 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 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 16:35:22,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:35:22,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 171 [2023-08-30 16:35:22,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:35:22,336 INFO L130 PetriNetUnfolder]: 34/84 cut-off events. [2023-08-30 16:35:22,337 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:35:22,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 84 events. 34/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 25 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 151. Up to 78 conditions per place. [2023-08-30 16:35:22,338 INFO L137 encePairwiseOnDemand]: 167/171 looper letters, 19 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2023-08-30 16:35:22,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 23 transitions, 89 flow [2023-08-30 16:35:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 16:35:22,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 16:35:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 181 transitions. [2023-08-30 16:35:22,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292397660818714 [2023-08-30 16:35:22,351 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 181 transitions. [2023-08-30 16:35:22,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 181 transitions. [2023-08-30 16:35:22,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:35:22,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 181 transitions. [2023-08-30 16:35:22,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 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 16:35:22,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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 16:35:22,360 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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 16:35:22,362 INFO L175 Difference]: Start difference. First operand has 26 places, 28 transitions, 61 flow. Second operand 2 states and 181 transitions. [2023-08-30 16:35:22,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 23 transitions, 89 flow [2023-08-30 16:35:22,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 89 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:35:22,365 INFO L231 Difference]: Finished difference. Result has 24 places, 23 transitions, 51 flow [2023-08-30 16:35:22,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=51, PETRI_PLACES=24, PETRI_TRANSITIONS=23} [2023-08-30 16:35:22,370 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2023-08-30 16:35:22,370 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 23 transitions, 51 flow [2023-08-30 16:35:22,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 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 16:35:22,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:35:22,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:35:22,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:35:22,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-30 16:35:22,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:35:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1467023127, now seen corresponding path program 1 times [2023-08-30 16:35:22,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:35:22,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161466632] [2023-08-30 16:35:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:35:22,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:35:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:35:23,055 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 16:35:23,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:35:23,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161466632] [2023-08-30 16:35:23,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161466632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:35:23,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:35:23,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 16:35:23,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088078494] [2023-08-30 16:35:23,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:35:23,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 16:35:23,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:35:23,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 16:35:23,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-08-30 16:35:23,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 171 [2023-08-30 16:35:23,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 51 flow. Second operand has 11 states, 11 states have (on average 59.45454545454545) internal successors, (654), 11 states have internal predecessors, (654), 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 16:35:23,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:35:23,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 171 [2023-08-30 16:35:23,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:35:23,705 INFO L130 PetriNetUnfolder]: 74/184 cut-off events. [2023-08-30 16:35:23,706 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:35:23,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 184 events. 74/184 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 424 event pairs, 2 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 369. Up to 87 conditions per place. [2023-08-30 16:35:23,708 INFO L137 encePairwiseOnDemand]: 157/171 looper letters, 40 selfloop transitions, 26 changer transitions 0/68 dead transitions. [2023-08-30 16:35:23,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 68 transitions, 273 flow [2023-08-30 16:35:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 16:35:23,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 16:35:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 880 transitions. [2023-08-30 16:35:23,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36758563074352546 [2023-08-30 16:35:23,713 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 880 transitions. [2023-08-30 16:35:23,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 880 transitions. [2023-08-30 16:35:23,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:35:23,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 880 transitions. [2023-08-30 16:35:23,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 62.857142857142854) internal successors, (880), 14 states have internal predecessors, (880), 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 16:35:23,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 171.0) internal successors, (2565), 15 states have internal predecessors, (2565), 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 16:35:23,723 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 171.0) internal successors, (2565), 15 states have internal predecessors, (2565), 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 16:35:23,724 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 51 flow. Second operand 14 states and 880 transitions. [2023-08-30 16:35:23,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 68 transitions, 273 flow [2023-08-30 16:35:23,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 68 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:35:23,726 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 219 flow [2023-08-30 16:35:23,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=219, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2023-08-30 16:35:23,727 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2023-08-30 16:35:23,727 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 219 flow [2023-08-30 16:35:23,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 59.45454545454545) internal successors, (654), 11 states have internal predecessors, (654), 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 16:35:23,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:35:23,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:35:23,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:35:23,729 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-30 16:35:23,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:35:23,729 INFO L85 PathProgramCache]: Analyzing trace with hash -361356833, now seen corresponding path program 1 times [2023-08-30 16:35:23,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:35:23,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974622430] [2023-08-30 16:35:23,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:35:23,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:35:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:35:24,268 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 16:35:24,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:35:24,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974622430] [2023-08-30 16:35:24,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974622430] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 16:35:24,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256914900] [2023-08-30 16:35:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:35:24,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:35:24,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:35:24,273 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 16:35:24,302 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 16:35:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:35:24,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-30 16:35:24,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 16:35:24,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 16:35:24,603 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 16:35:24,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 16:35:24,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 16:35:24,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:35:25,069 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-08-30 16:35:25,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 25 [2023-08-30 16:35:25,129 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 16:35:25,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 16:35:25,374 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_7| Int) (v_ArrVal_90 (Array Int Int))) (not (= 0 (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_90))) (store .cse1 |c_~#top~0.base| (store (select .cse1 |c_~#top~0.base|) |c_~#top~0.offset| (select (select .cse1 |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|)))))) (store .cse0 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_7| (store (select .cse0 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_7|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |c_~#top~0.base|) |c_~#top~0.offset|)))) is different from false [2023-08-30 16:35:25,421 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:35:25,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-08-30 16:35:25,436 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:35:25,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-30 16:35:25,539 INFO L321 Elim1Store]: treesize reduction 32, result has 54.9 percent of original size [2023-08-30 16:35:25,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 1183 treesize of output 1146 [2023-08-30 16:35:25,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 357 treesize of output 341 [2023-08-30 16:35:25,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-30 16:35:25,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-30 16:35:25,785 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:35:25,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 810 treesize of output 774 [2023-08-30 16:35:25,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 277 [2023-08-30 16:35:25,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-08-30 16:35:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 16:35:26,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256914900] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 16:35:26,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 16:35:26,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 27 [2023-08-30 16:35:26,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699298845] [2023-08-30 16:35:26,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 16:35:26,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-30 16:35:26,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:35:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-30 16:35:26,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=653, Unknown=2, NotChecked=52, Total=812 [2023-08-30 16:35:26,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 171 [2023-08-30 16:35:26,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 219 flow. Second operand has 29 states, 29 states have (on average 39.724137931034484) internal successors, (1152), 29 states have internal predecessors, (1152), 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 16:35:26,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:35:26,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 171 [2023-08-30 16:35:26,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:35:27,350 INFO L130 PetriNetUnfolder]: 97/268 cut-off events. [2023-08-30 16:35:27,351 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-08-30 16:35:27,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 268 events. 97/268 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 867 event pairs, 0 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 751. Up to 82 conditions per place. [2023-08-30 16:35:27,353 INFO L137 encePairwiseOnDemand]: 156/171 looper letters, 63 selfloop transitions, 49 changer transitions 0/114 dead transitions. [2023-08-30 16:35:27,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 114 transitions, 651 flow [2023-08-30 16:35:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 16:35:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 16:35:27,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 782 transitions. [2023-08-30 16:35:27,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2540610786224821 [2023-08-30 16:35:27,357 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 782 transitions. [2023-08-30 16:35:27,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 782 transitions. [2023-08-30 16:35:27,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:35:27,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 782 transitions. [2023-08-30 16:35:27,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 43.44444444444444) internal successors, (782), 18 states have internal predecessors, (782), 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 16:35:27,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 171.0) internal successors, (3249), 19 states have internal predecessors, (3249), 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 16:35:27,364 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 171.0) internal successors, (3249), 19 states have internal predecessors, (3249), 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 16:35:27,364 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 219 flow. Second operand 18 states and 782 transitions. [2023-08-30 16:35:27,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 114 transitions, 651 flow [2023-08-30 16:35:27,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 114 transitions, 651 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:35:27,377 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 543 flow [2023-08-30 16:35:27,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=543, PETRI_PLACES=70, PETRI_TRANSITIONS=78} [2023-08-30 16:35:27,378 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2023-08-30 16:35:27,378 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 543 flow [2023-08-30 16:35:27,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 39.724137931034484) internal successors, (1152), 29 states have internal predecessors, (1152), 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 16:35:27,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:35:27,379 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:35:27,388 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 16:35:27,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:35:27,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-30 16:35:27,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:35:27,586 INFO L85 PathProgramCache]: Analyzing trace with hash -600021821, now seen corresponding path program 2 times [2023-08-30 16:35:27,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:35:27,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702141487] [2023-08-30 16:35:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:35:27,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:35:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:35:28,104 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 16:35:28,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:35:28,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702141487] [2023-08-30 16:35:28,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702141487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 16:35:28,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727918120] [2023-08-30 16:35:28,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 16:35:28,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:35:28,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:35:28,106 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 16:35:28,134 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 16:35:28,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 16:35:28,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 16:35:28,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 16:35:28,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 16:35:28,236 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 16:35:28,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 16:35:28,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 16:35:28,576 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-08-30 16:35:28,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 25 [2023-08-30 16:35:28,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:35:28,663 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 16:35:28,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 16:35:28,672 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_160 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) is different from false [2023-08-30 16:35:28,709 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_~#top~0.base|))) (let ((.cse0 (= |c_thr1Thread1of1ForFork0_push_~oldTop~0#1| (select .cse2 |c_~#top~0.offset|)))) (and (or (not .cse0) (forall ((v_ArrVal_160 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| Int)) (not (= 0 (select (select (store (let ((.cse1 (store |c_#memory_int| |c_~#top~0.base| (store .cse2 |c_~#top~0.offset| |c_thr1Thread1of1ForFork0_push_#t~mem8#1|)))) (store .cse1 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| (store (select .cse1 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|))))) (or (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_153 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| Int)) (not (= (select (select (store (store |c_#memory_int| |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| v_ArrVal_153) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) .cse0)))) is different from false [2023-08-30 16:35:28,723 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_~#top~0.base|))) (let ((.cse0 (= |c_thr1Thread1of1ForFork0_push_~oldTop~0#1| (select .cse2 |c_~#top~0.offset|)))) (and (or (not .cse0) (forall ((v_ArrVal_160 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| Int)) (not (= (select (select (store (let ((.cse1 (store |c_#memory_int| |c_~#top~0.base| (store .cse2 |c_~#top~0.offset| (select (select |c_#memory_int| |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|))))) (store .cse1 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| (store (select .cse1 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|) 0)))) (or (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_153 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| Int)) (not (= (select (select (store (store |c_#memory_int| |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| v_ArrVal_153) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) .cse0)))) is different from false [2023-08-30 16:35:28,737 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_~#top~0.base|))) (let ((.cse2 (= |c_thr1Thread1of1ForFork0_push_#t~mem6#1| (select .cse1 |c_~#top~0.offset|)))) (and (or (forall ((v_ArrVal_160 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| Int)) (not (= (select (select (store (let ((.cse0 (store |c_#memory_int| |c_~#top~0.base| (store .cse1 |c_~#top~0.offset| (select (select |c_#memory_int| |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|))))) (store .cse0 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| (store (select .cse0 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) (not .cse2)) (or (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_153 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| Int)) (not (= (select (select (store (store |c_#memory_int| |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| v_ArrVal_153) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) .cse2)))) is different from false [2023-08-30 16:35:28,806 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:35:28,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-08-30 16:35:28,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 16:35:28,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-30 16:35:28,891 INFO L321 Elim1Store]: treesize reduction 27, result has 60.9 percent of original size [2023-08-30 16:35:28,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 105 treesize of output 127 [2023-08-30 16:35:28,975 INFO L321 Elim1Store]: treesize reduction 74, result has 46.0 percent of original size [2023-08-30 16:35:28,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 108 treesize of output 163 [2023-08-30 16:35:29,028 INFO L321 Elim1Store]: treesize reduction 40, result has 38.5 percent of original size [2023-08-30 16:35:29,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 132 treesize of output 129 [2023-08-30 16:35:29,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 72 [2023-08-30 16:35:29,305 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2023-08-30 16:35:29,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 166 treesize of output 166 [2023-08-30 16:35:29,372 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:35:29,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-08-30 16:35:29,387 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:35:29,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8 treesize of output 4 [2023-08-30 16:35:29,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 164 [2023-08-30 16:35:29,666 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2023-08-30 16:35:29,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 166 treesize of output 166 [2023-08-30 16:35:29,752 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:35:29,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8 treesize of output 4 [2023-08-30 16:35:30,263 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:35:30,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 70 [2023-08-30 16:35:30,327 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:35:30,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8 treesize of output 4 [2023-08-30 16:35:30,349 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:35:30,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8 treesize of output 4 [2023-08-30 16:35:30,361 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-08-30 16:35:30,382 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:35:30,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 70 [2023-08-30 16:38:32,973 WARN L222 SmtUtils]: Spent 3.04m on a formula simplification. DAG size of input: 961 DAG size of output: 220 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-30 16:38:32,974 INFO L321 Elim1Store]: treesize reduction 1653, result has 18.4 percent of original size [2023-08-30 16:38:32,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 25 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 45 new quantified variables, introduced 211 case distinctions, treesize of input 1824 treesize of output 1416 [2023-08-30 16:38:33,166 INFO L217 Elim1Store]: Index analysis took 131 ms Killed by 15