./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.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 f58f201da760ce0979516aee35f163e5c35cd587f19dc7144725dfa101235aca --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:52:36,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:52:36,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:52:36,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:52:36,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:52:36,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:52:36,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:52:36,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:52:36,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:52:36,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:52:36,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:52:36,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:52:36,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:52:36,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:52:36,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:52:36,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:52:36,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:52:36,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:52:36,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:52:36,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:52:36,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:52:36,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:52:36,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:52:36,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:52:36,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:52:36,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:52:36,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:52:36,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:52:36,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:52:36,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:52:36,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:52:36,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:52:36,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:52:36,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:52:36,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:52:36,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:52:36,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:52:36,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:52:36,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:52:36,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:52:36,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:52:36,895 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:52:36,926 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:52:36,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:52:36,928 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:52:36,928 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:52:36,929 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:52:36,929 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:52:36,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:52:36,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:52:36,930 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:52:36,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:52:36,931 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:52:36,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:52:36,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:52:36,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:52:36,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:52:36,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:52:36,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:52:36,932 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:52:36,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:52:36,932 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:52:36,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:52:36,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:52:36,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:52:36,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:52:36,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:52:36,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:52:36,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:52:36,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:52:36,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:52:36,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:52:36,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:52:36,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:52:36,935 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:52:36,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:52:36,935 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:52:36,935 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58f201da760ce0979516aee35f163e5c35cd587f19dc7144725dfa101235aca Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:52:37,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:52:37,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:52:37,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:52:37,287 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:52:37,288 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:52:37,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2023-08-30 16:52:38,333 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:52:38,552 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:52:38,552 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2023-08-30 16:52:38,568 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0445cd2e2/48d26aafd16944bc8ca1d93dc59a5e12/FLAG5f03634b4 [2023-08-30 16:52:38,581 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0445cd2e2/48d26aafd16944bc8ca1d93dc59a5e12 [2023-08-30 16:52:38,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:52:38,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:52:38,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:52:38,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:52:38,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:52:38,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:52:38" (1/1) ... [2023-08-30 16:52:38,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75d5c37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:38, skipping insertion in model container [2023-08-30 16:52:38,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:52:38" (1/1) ... [2023-08-30 16:52:38,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:52:38,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:52:38,810 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-wmm/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.i[979,992] [2023-08-30 16:52:39,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:52:39,012 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:52:39,022 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-wmm/mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.i[979,992] [2023-08-30 16:52:39,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:52:39,114 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:52:39,115 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:52:39,120 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:52:39,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39 WrapperNode [2023-08-30 16:52:39,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:52:39,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:52:39,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:52:39,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:52:39,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39" (1/1) ... [2023-08-30 16:52:39,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39" (1/1) ... [2023-08-30 16:52:39,173 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 112 [2023-08-30 16:52:39,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:52:39,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:52:39,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:52:39,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:52:39,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39" (1/1) ... [2023-08-30 16:52:39,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39" (1/1) ... [2023-08-30 16:52:39,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39" (1/1) ... [2023-08-30 16:52:39,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39" (1/1) ... [2023-08-30 16:52:39,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39" (1/1) ... [2023-08-30 16:52:39,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39" (1/1) ... [2023-08-30 16:52:39,210 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39" (1/1) ... [2023-08-30 16:52:39,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39" (1/1) ... [2023-08-30 16:52:39,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:52:39,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:52:39,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:52:39,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:52:39,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39" (1/1) ... [2023-08-30 16:52:39,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:52:39,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:52:39,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 16:52:39,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 16:52:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:52:39,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:52:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:52:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:52:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:52:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:52:39,300 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:52:39,300 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:52:39,301 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:52:39,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:52:39,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:52:39,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:52:39,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:52:39,302 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:52:39,419 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:52:39,420 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:52:39,736 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:52:39,918 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:52:39,918 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:52:39,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:52:39 BoogieIcfgContainer [2023-08-30 16:52:39,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:52:39,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:52:39,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:52:39,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:52:39,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:52:38" (1/3) ... [2023-08-30 16:52:39,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bacbeb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:52:39, skipping insertion in model container [2023-08-30 16:52:39,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:52:39" (2/3) ... [2023-08-30 16:52:39,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bacbeb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:52:39, skipping insertion in model container [2023-08-30 16:52:39,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:52:39" (3/3) ... [2023-08-30 16:52:39,928 INFO L112 eAbstractionObserver]: Analyzing ICFG mix054_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2023-08-30 16:52:39,935 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:52:39,943 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:52:39,944 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 16:52:39,944 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:52:39,999 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:52:40,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 87 transitions, 184 flow [2023-08-30 16:52:40,090 INFO L130 PetriNetUnfolder]: 2/85 cut-off events. [2023-08-30 16:52:40,090 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:52:40,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 85 events. 2/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 16:52:40,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 87 transitions, 184 flow [2023-08-30 16:52:40,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 85 transitions, 176 flow [2023-08-30 16:52:40,105 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:52:40,116 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 85 transitions, 176 flow [2023-08-30 16:52:40,119 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 85 transitions, 176 flow [2023-08-30 16:52:40,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 176 flow [2023-08-30 16:52:40,145 INFO L130 PetriNetUnfolder]: 2/85 cut-off events. [2023-08-30 16:52:40,145 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:52:40,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 85 events. 2/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 16:52:40,148 INFO L119 LiptonReduction]: Number of co-enabled transitions 1034 [2023-08-30 16:52:43,009 INFO L134 LiptonReduction]: Checked pairs total: 2524 [2023-08-30 16:52:43,009 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-30 16:52:43,029 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:52:43,036 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;@46b4f02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:52:43,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 16:52:43,040 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-30 16:52:43,041 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:52:43,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:43,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 16:52:43,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:52:43,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:43,053 INFO L85 PathProgramCache]: Analyzing trace with hash 396690, now seen corresponding path program 1 times [2023-08-30 16:52:43,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:43,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480428698] [2023-08-30 16:52:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:43,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:43,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480428698] [2023-08-30 16:52:43,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480428698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:43,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:43,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:52:43,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737591042] [2023-08-30 16:52:43,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:43,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:52:43,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:43,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:52:43,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:52:43,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 165 [2023-08-30 16:52:43,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:43,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:43,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 165 [2023-08-30 16:52:43,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:43,643 INFO L130 PetriNetUnfolder]: 142/278 cut-off events. [2023-08-30 16:52:43,644 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 16:52:43,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 278 events. 142/278 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1163 event pairs, 16 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 533. Up to 208 conditions per place. [2023-08-30 16:52:43,651 INFO L137 encePairwiseOnDemand]: 161/165 looper letters, 21 selfloop transitions, 2 changer transitions 2/26 dead transitions. [2023-08-30 16:52:43,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 26 transitions, 111 flow [2023-08-30 16:52:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:52:43,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:52:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-08-30 16:52:43,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2023-08-30 16:52:43,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-08-30 16:52:43,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-08-30 16:52:43,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:43,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-08-30 16:52:43,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:43,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:43,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:43,677 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 42 flow. Second operand 3 states and 253 transitions. [2023-08-30 16:52:43,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 26 transitions, 111 flow [2023-08-30 16:52:43,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:52:43,680 INFO L231 Difference]: Finished difference. Result has 23 places, 15 transitions, 38 flow [2023-08-30 16:52:43,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2023-08-30 16:52:43,684 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-08-30 16:52:43,684 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 38 flow [2023-08-30 16:52:43,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:43,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:43,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:52:43,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:52:43,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:52:43,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:43,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1322633842, now seen corresponding path program 1 times [2023-08-30 16:52:43,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:43,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520606521] [2023-08-30 16:52:43,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:43,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:44,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:44,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520606521] [2023-08-30 16:52:44,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520606521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:44,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:44,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:52:44,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696483643] [2023-08-30 16:52:44,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:44,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:52:44,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:44,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:52:44,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:52:44,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 165 [2023-08-30 16:52:44,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:44,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:44,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 165 [2023-08-30 16:52:44,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:44,140 INFO L130 PetriNetUnfolder]: 179/333 cut-off events. [2023-08-30 16:52:44,140 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 16:52:44,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 333 events. 179/333 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1317 event pairs, 55 based on Foata normal form. 17/350 useless extension candidates. Maximal degree in co-relation 693. Up to 196 conditions per place. [2023-08-30 16:52:44,145 INFO L137 encePairwiseOnDemand]: 160/165 looper letters, 20 selfloop transitions, 4 changer transitions 0/24 dead transitions. [2023-08-30 16:52:44,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 24 transitions, 106 flow [2023-08-30 16:52:44,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:52:44,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:52:44,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2023-08-30 16:52:44,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868686868686869 [2023-08-30 16:52:44,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2023-08-30 16:52:44,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2023-08-30 16:52:44,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:44,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2023-08-30 16:52:44,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:44,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:44,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:44,157 INFO L175 Difference]: Start difference. First operand has 23 places, 15 transitions, 38 flow. Second operand 3 states and 241 transitions. [2023-08-30 16:52:44,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 24 transitions, 106 flow [2023-08-30 16:52:44,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 24 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:52:44,158 INFO L231 Difference]: Finished difference. Result has 24 places, 17 transitions, 60 flow [2023-08-30 16:52:44,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2023-08-30 16:52:44,159 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2023-08-30 16:52:44,160 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 60 flow [2023-08-30 16:52:44,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:44,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:44,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:52:44,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:52:44,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:52:44,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:44,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1948025167, now seen corresponding path program 1 times [2023-08-30 16:52:44,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:44,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298536475] [2023-08-30 16:52:44,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:44,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:44,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:44,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298536475] [2023-08-30 16:52:44,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298536475] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:44,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:44,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:52:44,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128019807] [2023-08-30 16:52:44,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:44,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:52:44,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:44,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:52:44,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:52:44,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 165 [2023-08-30 16:52:44,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:44,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:44,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 165 [2023-08-30 16:52:44,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:44,562 INFO L130 PetriNetUnfolder]: 91/206 cut-off events. [2023-08-30 16:52:44,562 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-08-30 16:52:44,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 206 events. 91/206 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 849 event pairs, 16 based on Foata normal form. 32/235 useless extension candidates. Maximal degree in co-relation 480. Up to 97 conditions per place. [2023-08-30 16:52:44,564 INFO L137 encePairwiseOnDemand]: 160/165 looper letters, 22 selfloop transitions, 3 changer transitions 17/44 dead transitions. [2023-08-30 16:52:44,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 44 transitions, 230 flow [2023-08-30 16:52:44,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:52:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:52:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 400 transitions. [2023-08-30 16:52:44,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-08-30 16:52:44,566 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 400 transitions. [2023-08-30 16:52:44,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 400 transitions. [2023-08-30 16:52:44,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:44,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 400 transitions. [2023-08-30 16:52:44,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:44,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:44,583 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:44,583 INFO L175 Difference]: Start difference. First operand has 24 places, 17 transitions, 60 flow. Second operand 5 states and 400 transitions. [2023-08-30 16:52:44,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 44 transitions, 230 flow [2023-08-30 16:52:44,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 44 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:52:44,586 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 79 flow [2023-08-30 16:52:44,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-08-30 16:52:44,587 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2023-08-30 16:52:44,590 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 79 flow [2023-08-30 16:52:44,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:44,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:44,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:52:44,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:52:44,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:52:44,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:44,592 INFO L85 PathProgramCache]: Analyzing trace with hash 50165391, now seen corresponding path program 1 times [2023-08-30 16:52:44,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:44,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199442557] [2023-08-30 16:52:44,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:44,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:44,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:44,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199442557] [2023-08-30 16:52:44,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199442557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:44,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:44,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:52:44,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270920030] [2023-08-30 16:52:44,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:44,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:52:44,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:44,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:52:44,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:52:44,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 165 [2023-08-30 16:52:44,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:44,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:44,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 165 [2023-08-30 16:52:44,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:45,054 INFO L130 PetriNetUnfolder]: 35/98 cut-off events. [2023-08-30 16:52:45,055 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-08-30 16:52:45,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 98 events. 35/98 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 306 event pairs, 11 based on Foata normal form. 14/110 useless extension candidates. Maximal degree in co-relation 279. Up to 38 conditions per place. [2023-08-30 16:52:45,057 INFO L137 encePairwiseOnDemand]: 160/165 looper letters, 19 selfloop transitions, 5 changer transitions 10/36 dead transitions. [2023-08-30 16:52:45,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 205 flow [2023-08-30 16:52:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:52:45,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:52:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 465 transitions. [2023-08-30 16:52:45,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2023-08-30 16:52:45,059 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 465 transitions. [2023-08-30 16:52:45,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 465 transitions. [2023-08-30 16:52:45,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:45,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 465 transitions. [2023-08-30 16:52:45,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.5) internal successors, (465), 6 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:45,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:45,066 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 165.0) internal successors, (1155), 7 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:45,067 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 79 flow. Second operand 6 states and 465 transitions. [2023-08-30 16:52:45,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 205 flow [2023-08-30 16:52:45,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 192 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 16:52:45,070 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 90 flow [2023-08-30 16:52:45,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=90, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-08-30 16:52:45,072 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-08-30 16:52:45,072 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 90 flow [2023-08-30 16:52:45,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:45,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:45,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:52:45,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:52:45,073 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:52:45,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:45,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1936441024, now seen corresponding path program 1 times [2023-08-30 16:52:45,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:45,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597052670] [2023-08-30 16:52:45,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:45,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:52:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:52:45,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:52:45,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597052670] [2023-08-30 16:52:45,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597052670] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:52:45,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:52:45,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:52:45,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940015203] [2023-08-30 16:52:45,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:52:45,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 16:52:45,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:52:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 16:52:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 16:52:45,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 165 [2023-08-30 16:52:45,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:45,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:52:45,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 165 [2023-08-30 16:52:45,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:52:45,932 INFO L130 PetriNetUnfolder]: 26/87 cut-off events. [2023-08-30 16:52:45,932 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2023-08-30 16:52:45,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 87 events. 26/87 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 278 event pairs, 0 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 259. Up to 38 conditions per place. [2023-08-30 16:52:45,933 INFO L137 encePairwiseOnDemand]: 159/165 looper letters, 18 selfloop transitions, 4 changer transitions 15/39 dead transitions. [2023-08-30 16:52:45,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 258 flow [2023-08-30 16:52:45,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:52:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:52:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 522 transitions. [2023-08-30 16:52:45,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45194805194805193 [2023-08-30 16:52:45,935 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 522 transitions. [2023-08-30 16:52:45,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 522 transitions. [2023-08-30 16:52:45,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:52:45,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 522 transitions. [2023-08-30 16:52:45,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:45,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:45,940 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:45,940 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 90 flow. Second operand 7 states and 522 transitions. [2023-08-30 16:52:45,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 258 flow [2023-08-30 16:52:45,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 226 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-30 16:52:45,944 INFO L231 Difference]: Finished difference. Result has 34 places, 19 transitions, 90 flow [2023-08-30 16:52:45,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=19} [2023-08-30 16:52:45,946 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2023-08-30 16:52:45,946 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 19 transitions, 90 flow [2023-08-30 16:52:45,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:52:45,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:52:45,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:52:45,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:52:45,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-30 16:52:45,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:52:45,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1836208610, now seen corresponding path program 2 times [2023-08-30 16:52:45,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:52:45,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993257843] [2023-08-30 16:52:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:52:45,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:52:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 16:52:45,987 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 16:52:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 16:52:46,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 16:52:46,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 16:52:46,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-30 16:52:46,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-30 16:52:46,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-30 16:52:46,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-30 16:52:46,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-30 16:52:46,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:52:46,047 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-30 16:52:46,052 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:52:46,052 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:52:46,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:52:46 BasicIcfg [2023-08-30 16:52:46,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:52:46,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:52:46,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:52:46,086 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:52:46,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:52:39" (3/4) ... [2023-08-30 16:52:46,088 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 16:52:46,141 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:52:46,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:52:46,142 INFO L158 Benchmark]: Toolchain (without parser) took 7557.07ms. Allocated memory was 69.2MB in the beginning and 146.8MB in the end (delta: 77.6MB). Free memory was 41.3MB in the beginning and 82.4MB in the end (delta: -41.1MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2023-08-30 16:52:46,142 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:52:46,143 INFO L158 Benchmark]: CACSL2BoogieTranslator took 535.35ms. Allocated memory is still 69.2MB. Free memory was 41.1MB in the beginning and 34.2MB in the end (delta: 6.9MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-08-30 16:52:46,143 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.03ms. Allocated memory is still 69.2MB. Free memory was 34.2MB in the beginning and 31.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:52:46,143 INFO L158 Benchmark]: Boogie Preprocessor took 38.77ms. Allocated memory is still 69.2MB. Free memory was 31.8MB in the beginning and 30.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:52:46,143 INFO L158 Benchmark]: RCFGBuilder took 705.53ms. Allocated memory is still 69.2MB. Free memory was 30.0MB in the beginning and 36.3MB in the end (delta: -6.3MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2023-08-30 16:52:46,144 INFO L158 Benchmark]: TraceAbstraction took 6163.34ms. Allocated memory was 69.2MB in the beginning and 146.8MB in the end (delta: 77.6MB). Free memory was 35.6MB in the beginning and 88.7MB in the end (delta: -53.0MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2023-08-30 16:52:46,144 INFO L158 Benchmark]: Witness Printer took 55.33ms. Allocated memory is still 146.8MB. Free memory was 88.7MB in the beginning and 82.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-08-30 16:52:46,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 535.35ms. Allocated memory is still 69.2MB. Free memory was 41.1MB in the beginning and 34.2MB in the end (delta: 6.9MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.03ms. Allocated memory is still 69.2MB. Free memory was 34.2MB in the beginning and 31.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.77ms. Allocated memory is still 69.2MB. Free memory was 31.8MB in the beginning and 30.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 705.53ms. Allocated memory is still 69.2MB. Free memory was 30.0MB in the beginning and 36.3MB in the end (delta: -6.3MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6163.34ms. Allocated memory was 69.2MB in the beginning and 146.8MB in the end (delta: 77.6MB). Free memory was 35.6MB in the beginning and 88.7MB in the end (delta: -53.0MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. * Witness Printer took 55.33ms. Allocated memory is still 146.8MB. Free memory was 88.7MB in the beginning and 82.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 90 PlacesBefore, 24 PlacesAfterwards, 85 TransitionsBefore, 18 TransitionsAfterwards, 1034 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 78 TotalNumberOfCompositions, 2524 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1173, independent: 1055, independent conditional: 0, independent unconditional: 1055, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 582, independent: 557, independent conditional: 0, independent unconditional: 557, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1173, independent: 498, independent conditional: 0, independent unconditional: 498, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 582, unknown conditional: 0, unknown unconditional: 582] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L716] 0 int y = 0; [L717] 0 _Bool y$flush_delayed; [L718] 0 int y$mem_tmp; [L719] 0 _Bool y$r_buff0_thd0; [L720] 0 _Bool y$r_buff0_thd1; [L721] 0 _Bool y$r_buff0_thd2; [L722] 0 _Bool y$r_buff1_thd0; [L723] 0 _Bool y$r_buff1_thd1; [L724] 0 _Bool y$r_buff1_thd2; [L725] 0 _Bool y$read_delayed; [L726] 0 int *y$read_delayed_var; [L727] 0 int y$w_buff0; [L728] 0 _Bool y$w_buff0_used; [L729] 0 int y$w_buff1; [L730] 0 _Bool y$w_buff1_used; [L731] 0 _Bool weak$$choice0; [L732] 0 _Bool weak$$choice2; [L805] 0 pthread_t t1441; [L806] FCALL, FORK 0 pthread_create(&t1441, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1441, ((void *)0), P0, ((void *)0))=-2, t1441={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L807] 0 pthread_t t1442; [L808] FCALL, FORK 0 pthread_create(&t1442, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1442, ((void *)0), P1, ((void *)0))=-1, t1441={5:0}, t1442={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L736] 1 y$w_buff1 = y$w_buff0 [L737] 1 y$w_buff0 = 1 [L738] 1 y$w_buff1_used = y$w_buff0_used [L739] 1 y$w_buff0_used = (_Bool)1 [L740] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L740] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L741] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L742] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L743] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L744] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L747] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L764] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L767] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L768] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L769] 2 y$flush_delayed = weak$$choice2 [L770] 2 y$mem_tmp = y [L771] 2 y = !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L772] 2 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L773] 2 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L774] 2 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L775] 2 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L776] 2 y$r_buff0_thd2 = weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L777] 2 y$r_buff1_thd2 = weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L778] 2 __unbuffered_p1_EAX = y [L779] 2 y = y$flush_delayed ? y$mem_tmp : y [L780] 2 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L783] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L784] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L785] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L786] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L787] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L750] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L751] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L752] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L753] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L754] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L757] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L759] 1 return 0; [L790] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L792] 2 return 0; [L810] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L812] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L812] RET 0 assume_abort_if_not(main$tmp_guard0) [L814] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L815] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L816] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L817] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L818] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1441={5:0}, t1442={3:0}, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L821] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 0) [L823] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 806]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 105 locations, 5 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: 6.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 124 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 324 IncrementalHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 17 mSDtfsCounter, 324 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=4, InterpolantAutomatonStates: 24, 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, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 211 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-30 16:52:46,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE