./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/bigshot_s.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/bigshot_s.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 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:48:28,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:48:28,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:48:28,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:48:28,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:48:28,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:48:28,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:48:28,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:48:28,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:48:28,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:48:28,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:48:28,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:48:28,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:48:28,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:48:28,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:48:28,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:48:28,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:48:28,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:48:28,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:48:28,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:48:28,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:48:28,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:48:28,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:48:28,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:48:28,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:48:28,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:48:28,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:48:28,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:48:28,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:48:28,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:48:28,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:48:28,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:48:28,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:48:28,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:48:28,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:48:28,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:48:28,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:48:28,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:48:28,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:48:28,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:48:28,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:48:28,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 08:48:28,261 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:48:28,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:48:28,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:48:28,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:48:28,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:48:28,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:48:28,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:48:28,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:48:28,265 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:48:28,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:48:28,266 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:48:28,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:48:28,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:48:28,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:48:28,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:48:28,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:48:28,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:48:28,267 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:48:28,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:48:28,268 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:48:28,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:48:28,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:48:28,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:48:28,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:48:28,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:48:28,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:48:28,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:48:28,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:48:28,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:48:28,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:48:28,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:48:28,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:48:28,271 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:48:28,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:48:28,271 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:48:28,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d8c741fd238f074816319de9a9bd5d97cd9b35eb7f53a276be973ea0c31ecbe Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:48:28,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:48:28,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:48:28,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:48:28,625 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:48:28,625 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:48:28,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s.i [2023-09-01 08:48:29,841 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:48:30,118 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:48:30,119 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s.i [2023-09-01 08:48:30,144 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c813b6b20/6648903ca2124062bbc17e0591bbfc75/FLAG5c1d985e7 [2023-09-01 08:48:30,156 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c813b6b20/6648903ca2124062bbc17e0591bbfc75 [2023-09-01 08:48:30,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:48:30,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:48:30,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:48:30,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:48:30,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:48:30,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12424f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30, skipping insertion in model container [2023-09-01 08:48:30,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:48:30,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:48:30,610 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/bigshot_s.i[55202,55215] [2023-09-01 08:48:30,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:48:30,635 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:48:30,666 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/bigshot_s.i[55202,55215] [2023-09-01 08:48:30,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:48:30,744 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:48:30,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30 WrapperNode [2023-09-01 08:48:30,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:48:30,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:48:30,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:48:30,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:48:30,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,817 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2023-09-01 08:48:30,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:48:30,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:48:30,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:48:30,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:48:30,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,864 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:48:30,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:48:30,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:48:30,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:48:30,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (1/1) ... [2023-09-01 08:48:30,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:48:30,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:48:30,906 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) [2023-09-01 08:48:30,927 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 [2023-09-01 08:48:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:48:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:48:30,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-09-01 08:48:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:48:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:48:30,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:48:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:48:30,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:48:30,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:48:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:48:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:48:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:48:30,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:48:30,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:48:30,948 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:48:31,099 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:48:31,100 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:48:31,289 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:48:31,295 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:48:31,295 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-09-01 08:48:31,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:48:31 BoogieIcfgContainer [2023-09-01 08:48:31,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:48:31,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:48:31,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:48:31,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:48:31,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:48:30" (1/3) ... [2023-09-01 08:48:31,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a3e35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:48:31, skipping insertion in model container [2023-09-01 08:48:31,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:48:30" (2/3) ... [2023-09-01 08:48:31,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a3e35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:48:31, skipping insertion in model container [2023-09-01 08:48:31,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:48:31" (3/3) ... [2023-09-01 08:48:31,314 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2023-09-01 08:48:31,331 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:48:31,339 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:48:31,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 08:48:31,339 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:48:31,386 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:48:31,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 87 transitions, 190 flow [2023-09-01 08:48:31,448 INFO L130 PetriNetUnfolder]: 5/85 cut-off events. [2023-09-01 08:48:31,448 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:48:31,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 5/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-09-01 08:48:31,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 87 transitions, 190 flow [2023-09-01 08:48:31,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 73 transitions, 158 flow [2023-09-01 08:48:31,457 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:48:31,474 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 73 transitions, 158 flow [2023-09-01 08:48:31,480 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 73 transitions, 158 flow [2023-09-01 08:48:31,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 73 transitions, 158 flow [2023-09-01 08:48:31,503 INFO L130 PetriNetUnfolder]: 4/73 cut-off events. [2023-09-01 08:48:31,506 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:48:31,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 4/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-09-01 08:48:31,508 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-09-01 08:48:34,303 INFO L134 LiptonReduction]: Checked pairs total: 177 [2023-09-01 08:48:34,303 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-09-01 08:48:34,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:48:34,320 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;@5dba796d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:48:34,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 08:48:34,324 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-09-01 08:48:34,325 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:48:34,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:34,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:34,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 08:48:34,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1698875547, now seen corresponding path program 1 times [2023-09-01 08:48:34,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:34,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489085722] [2023-09-01 08:48:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:34,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:34,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:34,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:34,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489085722] [2023-09-01 08:48:34,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489085722] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:34,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:34,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:48:34,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010858942] [2023-09-01 08:48:34,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:34,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:48:34,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:48:34,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:48:34,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 155 [2023-09-01 08:48:34,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2023-09-01 08:48:34,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:34,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 155 [2023-09-01 08:48:34,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:34,642 INFO L130 PetriNetUnfolder]: 5/20 cut-off events. [2023-09-01 08:48:34,642 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:48:34,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 5/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 29. Up to 17 conditions per place. [2023-09-01 08:48:34,643 INFO L137 encePairwiseOnDemand]: 153/155 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-09-01 08:48:34,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-09-01 08:48:34,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:48:34,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:48:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-09-01 08:48:34,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5290322580645161 [2023-09-01 08:48:34,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-09-01 08:48:34,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-09-01 08:48:34,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:34,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-09-01 08:48:34,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2023-09-01 08:48:34,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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) [2023-09-01 08:48:34,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 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) [2023-09-01 08:48:34,673 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 246 transitions. [2023-09-01 08:48:34,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-09-01 08:48:34,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 08:48:34,678 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2023-09-01 08:48:34,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-09-01 08:48:34,682 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-09-01 08:48:34,682 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2023-09-01 08:48:34,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2023-09-01 08:48:34,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:34,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:34,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:48:34,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 08:48:34,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:34,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1109150181, now seen corresponding path program 1 times [2023-09-01 08:48:34,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:34,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667622726] [2023-09-01 08:48:34,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:34,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:35,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:35,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667622726] [2023-09-01 08:48:35,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667622726] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:48:35,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:48:35,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 08:48:35,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765684797] [2023-09-01 08:48:35,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:48:35,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 08:48:35,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 08:48:35,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:48:35,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 155 [2023-09-01 08:48:35,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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) [2023-09-01 08:48:35,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:35,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 155 [2023-09-01 08:48:35,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:35,300 INFO L130 PetriNetUnfolder]: 9/28 cut-off events. [2023-09-01 08:48:35,300 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:48:35,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 2 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 45. Up to 13 conditions per place. [2023-09-01 08:48:35,300 INFO L137 encePairwiseOnDemand]: 151/155 looper letters, 13 selfloop transitions, 5 changer transitions 0/18 dead transitions. [2023-09-01 08:48:35,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 18 transitions, 78 flow [2023-09-01 08:48:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:48:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:48:35,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 291 transitions. [2023-09-01 08:48:35,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693548387096774 [2023-09-01 08:48:35,303 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 291 transitions. [2023-09-01 08:48:35,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 291 transitions. [2023-09-01 08:48:35,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:35,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 291 transitions. [2023-09-01 08:48:35,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2023-09-01 08:48:35,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-09-01 08:48:35,307 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-09-01 08:48:35,307 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 4 states and 291 transitions. [2023-09-01 08:48:35,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 18 transitions, 78 flow [2023-09-01 08:48:35,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 77 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:48:35,308 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 60 flow [2023-09-01 08:48:35,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-09-01 08:48:35,309 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-09-01 08:48:35,309 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 60 flow [2023-09-01 08:48:35,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 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) [2023-09-01 08:48:35,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:35,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:35,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:48:35,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 08:48:35,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:35,311 INFO L85 PathProgramCache]: Analyzing trace with hash -18079033, now seen corresponding path program 1 times [2023-09-01 08:48:35,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:35,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758553139] [2023-09-01 08:48:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:35,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:35,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:35,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758553139] [2023-09-01 08:48:35,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758553139] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:48:35,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27059440] [2023-09-01 08:48:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:35,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:48:35,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:48:35,777 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) [2023-09-01 08:48:35,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:48:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:35,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 39 conjunts are in the unsatisfiable core [2023-09-01 08:48:35,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:48:35,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:48:35,935 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 [2023-09-01 08:48:35,952 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-09-01 08:48:35,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 22 [2023-09-01 08:48:36,050 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 [2023-09-01 08:48:36,174 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-09-01 08:48:36,176 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 1 case distinctions, treesize of input 19 treesize of output 18 [2023-09-01 08:48:36,247 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 08:48:36,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-09-01 08:48:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:36,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:48:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:36,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27059440] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:48:36,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:48:36,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2023-09-01 08:48:36,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125256990] [2023-09-01 08:48:36,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:48:36,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 08:48:36,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:36,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 08:48:36,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-09-01 08:48:37,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 155 [2023-09-01 08:48:37,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 60 flow. Second operand has 18 states, 18 states have (on average 65.0) internal successors, (1170), 18 states have internal predecessors, (1170), 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) [2023-09-01 08:48:37,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:37,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 155 [2023-09-01 08:48:37,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:38,315 INFO L130 PetriNetUnfolder]: 14/45 cut-off events. [2023-09-01 08:48:38,315 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 08:48:38,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 45 events. 14/45 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 68 event pairs, 1 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 115. Up to 14 conditions per place. [2023-09-01 08:48:38,316 INFO L137 encePairwiseOnDemand]: 150/155 looper letters, 17 selfloop transitions, 8 changer transitions 5/30 dead transitions. [2023-09-01 08:48:38,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 165 flow [2023-09-01 08:48:38,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:48:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:48:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 600 transitions. [2023-09-01 08:48:38,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2023-09-01 08:48:38,318 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 600 transitions. [2023-09-01 08:48:38,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 600 transitions. [2023-09-01 08:48:38,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:38,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 600 transitions. [2023-09-01 08:48:38,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 66.66666666666667) internal successors, (600), 9 states have internal predecessors, (600), 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) [2023-09-01 08:48:38,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 155.0) internal successors, (1550), 10 states have internal predecessors, (1550), 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) [2023-09-01 08:48:38,323 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 155.0) internal successors, (1550), 10 states have internal predecessors, (1550), 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) [2023-09-01 08:48:38,323 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 60 flow. Second operand 9 states and 600 transitions. [2023-09-01 08:48:38,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 165 flow [2023-09-01 08:48:38,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 163 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-09-01 08:48:38,325 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 104 flow [2023-09-01 08:48:38,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-09-01 08:48:38,326 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2023-09-01 08:48:38,326 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 104 flow [2023-09-01 08:48:38,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.0) internal successors, (1170), 18 states have internal predecessors, (1170), 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) [2023-09-01 08:48:38,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:38,327 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:38,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:48:38,541 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 [2023-09-01 08:48:38,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 08:48:38,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:38,542 INFO L85 PathProgramCache]: Analyzing trace with hash -53489865, now seen corresponding path program 2 times [2023-09-01 08:48:38,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:38,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473110594] [2023-09-01 08:48:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:38,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:39,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:39,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473110594] [2023-09-01 08:48:39,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473110594] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:48:39,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424452345] [2023-09-01 08:48:39,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:48:39,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:48:39,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:48:39,092 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) [2023-09-01 08:48:39,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:48:39,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:48:39,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:48:39,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 34 conjunts are in the unsatisfiable core [2023-09-01 08:48:39,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:48:39,231 INFO L321 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2023-09-01 08:48:39,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 38 treesize of output 53 [2023-09-01 08:48:39,242 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 [2023-09-01 08:48:39,285 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:48:39,286 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 [2023-09-01 08:48:39,315 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 [2023-09-01 08:48:39,371 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 [2023-09-01 08:48:39,409 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 [2023-09-01 08:48:39,450 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 [2023-09-01 08:48:39,487 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 [2023-09-01 08:48:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:39,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:48:39,543 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2023-09-01 08:48:39,618 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2023-09-01 08:48:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-09-01 08:48:39,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424452345] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:48:39,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:48:39,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-09-01 08:48:39,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41649456] [2023-09-01 08:48:39,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:48:39,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-09-01 08:48:39,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:48:39,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-09-01 08:48:39,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=525, Unknown=11, NotChecked=94, Total=702 [2023-09-01 08:48:39,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 155 [2023-09-01 08:48:39,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 104 flow. Second operand has 27 states, 27 states have (on average 41.629629629629626) internal successors, (1124), 27 states have internal predecessors, (1124), 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) [2023-09-01 08:48:39,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:48:39,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 155 [2023-09-01 08:48:39,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:48:42,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:48:42,661 INFO L130 PetriNetUnfolder]: 15/50 cut-off events. [2023-09-01 08:48:42,661 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-09-01 08:48:42,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 50 events. 15/50 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 1 based on Foata normal form. 3/53 useless extension candidates. Maximal degree in co-relation 186. Up to 17 conditions per place. [2023-09-01 08:48:42,662 INFO L137 encePairwiseOnDemand]: 150/155 looper letters, 17 selfloop transitions, 14 changer transitions 5/36 dead transitions. [2023-09-01 08:48:42,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 256 flow [2023-09-01 08:48:42,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 08:48:42,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 08:48:42,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 518 transitions. [2023-09-01 08:48:42,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.278494623655914 [2023-09-01 08:48:42,671 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 518 transitions. [2023-09-01 08:48:42,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 518 transitions. [2023-09-01 08:48:42,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:48:42,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 518 transitions. [2023-09-01 08:48:42,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.166666666666664) internal successors, (518), 12 states have internal predecessors, (518), 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) [2023-09-01 08:48:42,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 155.0) internal successors, (2015), 13 states have internal predecessors, (2015), 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) [2023-09-01 08:48:42,675 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 155.0) internal successors, (2015), 13 states have internal predecessors, (2015), 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) [2023-09-01 08:48:42,676 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 104 flow. Second operand 12 states and 518 transitions. [2023-09-01 08:48:42,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 256 flow [2023-09-01 08:48:42,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 220 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-09-01 08:48:42,679 INFO L231 Difference]: Finished difference. Result has 39 places, 25 transitions, 145 flow [2023-09-01 08:48:42,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=145, PETRI_PLACES=39, PETRI_TRANSITIONS=25} [2023-09-01 08:48:42,681 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 20 predicate places. [2023-09-01 08:48:42,681 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 25 transitions, 145 flow [2023-09-01 08:48:42,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 41.629629629629626) internal successors, (1124), 27 states have internal predecessors, (1124), 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) [2023-09-01 08:48:42,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:48:42,683 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:48:42,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 08:48:42,896 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,SelfDestructingSolverStorable3 [2023-09-01 08:48:42,896 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 08:48:42,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:48:42,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1658603715, now seen corresponding path program 3 times [2023-09-01 08:48:42,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:48:42,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790519646] [2023-09-01 08:48:42,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:48:42,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:48:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:48:43,446 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:43,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:48:43,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790519646] [2023-09-01 08:48:43,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790519646] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:48:43,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421872100] [2023-09-01 08:48:43,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 08:48:43,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:48:43,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:48:43,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:48:43,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:48:43,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-09-01 08:48:43,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:48:43,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 57 conjunts are in the unsatisfiable core [2023-09-01 08:48:43,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:48:43,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:48:43,577 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 [2023-09-01 08:48:43,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:48:43,610 INFO L321 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2023-09-01 08:48:43,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 40 [2023-09-01 08:48:43,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-09-01 08:48:43,789 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-09-01 08:48:43,793 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 1 case distinctions, treesize of input 19 treesize of output 18 [2023-09-01 08:48:43,850 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 08:48:43,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-09-01 08:48:43,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:48:43,910 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 08:48:43,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-09-01 08:48:43,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:48:43,962 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 08:48:43,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-09-01 08:48:44,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:48:44,025 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 08:48:44,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-09-01 08:48:44,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:48:44,076 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 08:48:44,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-09-01 08:48:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:48:44,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:49:37,546 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 Int) (v_ArrVal_167 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_59| Int) (v_ArrVal_174 Int) (v_ArrVal_172 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_56| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_57| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_58| Int) (v_ArrVal_170 Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_58| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_59| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_59| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 2)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_56| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_57| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_57| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_58| 1)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) (select (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|))) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset| 1) v_ArrVal_167) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_59| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_168) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_58| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_170) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_57| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_172) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_56| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_174)) c_~v~0.base) c_~v~0.offset)))) is different from false [2023-09-01 08:49:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 4 refuted. 3 times theorem prover too weak. 0 trivial. 5 not checked. [2023-09-01 08:49:45,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421872100] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:49:45,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:49:45,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2023-09-01 08:49:45,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976899326] [2023-09-01 08:49:45,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:49:45,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-09-01 08:49:45,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:49:45,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-09-01 08:49:45,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=769, Unknown=30, NotChecked=58, Total=992 [2023-09-01 08:49:46,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 155 [2023-09-01 08:49:46,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 145 flow. Second operand has 32 states, 32 states have (on average 41.59375) internal successors, (1331), 32 states have internal predecessors, (1331), 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) [2023-09-01 08:49:46,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:49:46,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 155 [2023-09-01 08:49:46,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:49:55,230 WARN L222 SmtUtils]: Spent 8.91s on a formula simplification. DAG size of input: 86 DAG size of output: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 08:50:06,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:50:10,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:50:12,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:50:18,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:50:27,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:50:28,246 INFO L130 PetriNetUnfolder]: 11/49 cut-off events. [2023-09-01 08:50:28,247 INFO L131 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2023-09-01 08:50:28,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 49 events. 11/49 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 1 based on Foata normal form. 6/55 useless extension candidates. Maximal degree in co-relation 173. Up to 13 conditions per place. [2023-09-01 08:50:28,247 INFO L137 encePairwiseOnDemand]: 149/155 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-09-01 08:50:28,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 37 transitions, 275 flow [2023-09-01 08:50:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 08:50:28,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 08:50:28,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 718 transitions. [2023-09-01 08:50:28,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27248576850094874 [2023-09-01 08:50:28,251 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 718 transitions. [2023-09-01 08:50:28,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 718 transitions. [2023-09-01 08:50:28,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:50:28,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 718 transitions. [2023-09-01 08:50:28,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 42.23529411764706) internal successors, (718), 17 states have internal predecessors, (718), 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) [2023-09-01 08:50:28,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 155.0) internal successors, (2790), 18 states have internal predecessors, (2790), 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) [2023-09-01 08:50:28,257 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 155.0) internal successors, (2790), 18 states have internal predecessors, (2790), 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) [2023-09-01 08:50:28,257 INFO L175 Difference]: Start difference. First operand has 39 places, 25 transitions, 145 flow. Second operand 17 states and 718 transitions. [2023-09-01 08:50:28,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 37 transitions, 275 flow [2023-09-01 08:50:28,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 195 flow, removed 17 selfloop flow, removed 10 redundant places. [2023-09-01 08:50:28,259 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-09-01 08:50:28,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-09-01 08:50:28,260 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 24 predicate places. [2023-09-01 08:50:28,260 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-09-01 08:50:28,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 41.59375) internal successors, (1331), 32 states have internal predecessors, (1331), 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) [2023-09-01 08:50:28,262 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-09-01 08:50:28,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 08:50:28,263 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-09-01 08:50:28,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:50:28,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:50:28,473 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-09-01 08:50:28,476 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:50:28,476 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:50:28,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:50:28 BasicIcfg [2023-09-01 08:50:28,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:50:28,479 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:50:28,479 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:50:28,480 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:50:28,480 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:48:31" (3/4) ... [2023-09-01 08:50:28,482 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:50:28,487 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:50:28,487 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:50:28,492 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-09-01 08:50:28,492 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-09-01 08:50:28,492 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 08:50:28,492 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:50:28,492 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:50:28,527 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:50:28,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:50:28,528 INFO L158 Benchmark]: Toolchain (without parser) took 118369.30ms. Allocated memory was 67.1MB in the beginning and 148.9MB in the end (delta: 81.8MB). Free memory was 42.5MB in the beginning and 66.6MB in the end (delta: -24.1MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. [2023-09-01 08:50:28,528 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory was 30.5MB in the beginning and 30.5MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:50:28,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 585.69ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.2MB in the beginning and 54.1MB in the end (delta: -11.9MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2023-09-01 08:50:28,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.35ms. Allocated memory is still 81.8MB. Free memory was 54.1MB in the beginning and 51.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:50:28,529 INFO L158 Benchmark]: Boogie Preprocessor took 56.87ms. Allocated memory is still 81.8MB. Free memory was 51.6MB in the beginning and 50.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:50:28,529 INFO L158 Benchmark]: RCFGBuilder took 421.97ms. Allocated memory is still 81.8MB. Free memory was 49.9MB in the beginning and 36.2MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 08:50:28,530 INFO L158 Benchmark]: TraceAbstraction took 117171.28ms. Allocated memory was 81.8MB in the beginning and 148.9MB in the end (delta: 67.1MB). Free memory was 56.3MB in the beginning and 69.8MB in the end (delta: -13.4MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. [2023-09-01 08:50:28,530 INFO L158 Benchmark]: Witness Printer took 48.33ms. Allocated memory is still 148.9MB. Free memory was 69.8MB in the beginning and 66.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 08:50:28,533 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 52.4MB. Free memory was 30.5MB in the beginning and 30.5MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 585.69ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 42.2MB in the beginning and 54.1MB in the end (delta: -11.9MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.35ms. Allocated memory is still 81.8MB. Free memory was 54.1MB in the beginning and 51.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.87ms. Allocated memory is still 81.8MB. Free memory was 51.6MB in the beginning and 50.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 421.97ms. Allocated memory is still 81.8MB. Free memory was 49.9MB in the beginning and 36.2MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 117171.28ms. Allocated memory was 81.8MB in the beginning and 148.9MB in the end (delta: 67.1MB). Free memory was 56.3MB in the beginning and 69.8MB in the end (delta: -13.4MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. * Witness Printer took 48.33ms. Allocated memory is still 148.9MB. Free memory was 69.8MB in the beginning and 66.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 76 PlacesBefore, 19 PlacesAfterwards, 73 TransitionsBefore, 14 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 68 TotalNumberOfCompositions, 177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 154, independent: 144, independent conditional: 0, independent unconditional: 144, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 90, independent: 86, independent conditional: 0, independent unconditional: 86, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 154, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 90, unknown conditional: 0, unknown unconditional: 90] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 108 locations, 3 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: 117.1s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 47.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 90 mSolverCounterUnknown, 805 SdHoareTripleChecker+Valid, 30.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 707 mSDsluCounter, 1138 SdHoareTripleChecker+Invalid, 29.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 170 IncrementalHoareTripleChecker+Unchecked, 1131 mSDsCounter, 170 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3574 IncrementalHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 170 mSolverCounterUnsat, 7 mSDtfsCounter, 3574 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 107 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 79.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=4, InterpolantAutomatonStates: 45, 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, 0.2s SatisfiabilityAnalysisTime, 65.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 150 ConstructedInterpolants, 29 QuantifiedInterpolants, 2736 SizeOfPredicates, 26 NumberOfNonLiveVariables, 621 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 9/78 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:50:28,602 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