./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/safe033_tso.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 03e09f2995f610da86eeaa1f1ee03bc9ee01699bf21a2567d5a1129cd8929582 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 23:22:20,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 23:22:20,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 23:22:20,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 23:22:20,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 23:22:20,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 23:22:20,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 23:22:20,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 23:22:20,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 23:22:20,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 23:22:20,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 23:22:20,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 23:22:20,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 23:22:20,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 23:22:20,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 23:22:20,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 23:22:20,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 23:22:20,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 23:22:20,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 23:22:20,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 23:22:20,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 23:22:20,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 23:22:20,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 23:22:20,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 23:22:20,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 23:22:20,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 23:22:20,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 23:22:20,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 23:22:20,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 23:22:20,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 23:22:20,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 23:22:20,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 23:22:20,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 23:22:20,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 23:22:20,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 23:22:20,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 23:22:20,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 23:22:20,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 23:22:20,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 23:22:20,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 23:22:20,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 23:22:20,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 23:22:20,832 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 23:22:20,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 23:22:20,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 23:22:20,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 23:22:20,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 23:22:20,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 23:22:20,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 23:22:20,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 23:22:20,835 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 23:22:20,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 23:22:20,836 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 23:22:20,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 23:22:20,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 23:22:20,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 23:22:20,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 23:22:20,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 23:22:20,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 23:22:20,837 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 23:22:20,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 23:22:20,838 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 23:22:20,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 23:22:20,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 23:22:20,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 23:22:20,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 23:22:20,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:22:20,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 23:22:20,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 23:22:20,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 23:22:20,839 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 23:22:20,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 23:22:20,840 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 23:22:20,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 23:22:20,840 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 23:22:20,840 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 23:22:20,841 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 23:22:20,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03e09f2995f610da86eeaa1f1ee03bc9ee01699bf21a2567d5a1129cd8929582 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 23:22:21,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 23:22:21,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 23:22:21,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 23:22:21,156 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 23:22:21,156 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 23:22:21,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2023-08-30 23:22:22,343 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 23:22:22,559 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 23:22:22,560 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2023-08-30 23:22:22,573 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/397b0ffbb/dd266a856f164aab86fd2f87b694d326/FLAG6d2dfb03b [2023-08-30 23:22:22,589 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/397b0ffbb/dd266a856f164aab86fd2f87b694d326 [2023-08-30 23:22:22,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 23:22:22,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 23:22:22,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 23:22:22,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 23:22:22,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 23:22:22,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:22:22" (1/1) ... [2023-08-30 23:22:22,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f745ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:22, skipping insertion in model container [2023-08-30 23:22:22,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:22:22" (1/1) ... [2023-08-30 23:22:22,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 23:22:22,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 23:22:22,764 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/safe033_tso.i[945,958] [2023-08-30 23:22:22,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:22:22,956 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 23:22:22,969 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/safe033_tso.i[945,958] [2023-08-30 23:22:23,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 23:22:23,055 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:22:23,055 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 23:22:23,061 INFO L208 MainTranslator]: Completed translation [2023-08-30 23:22:23,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23 WrapperNode [2023-08-30 23:22:23,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 23:22:23,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 23:22:23,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 23:22:23,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 23:22:23,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23" (1/1) ... [2023-08-30 23:22:23,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23" (1/1) ... [2023-08-30 23:22:23,119 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-08-30 23:22:23,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 23:22:23,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 23:22:23,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 23:22:23,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 23:22:23,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23" (1/1) ... [2023-08-30 23:22:23,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23" (1/1) ... [2023-08-30 23:22:23,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23" (1/1) ... [2023-08-30 23:22:23,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23" (1/1) ... [2023-08-30 23:22:23,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23" (1/1) ... [2023-08-30 23:22:23,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23" (1/1) ... [2023-08-30 23:22:23,155 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23" (1/1) ... [2023-08-30 23:22:23,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23" (1/1) ... [2023-08-30 23:22:23,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 23:22:23,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 23:22:23,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 23:22:23,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 23:22:23,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23" (1/1) ... [2023-08-30 23:22:23,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 23:22:23,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 23:22:23,194 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 23:22:23,210 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 23:22:23,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 23:22:23,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 23:22:23,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 23:22:23,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 23:22:23,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 23:22:23,235 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 23:22:23,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 23:22:23,236 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 23:22:23,236 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 23:22:23,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 23:22:23,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 23:22:23,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 23:22:23,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 23:22:23,238 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 23:22:23,406 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 23:22:23,407 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 23:22:23,513 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 23:22:23,519 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 23:22:23,519 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 23:22:23,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:22:23 BoogieIcfgContainer [2023-08-30 23:22:23,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 23:22:23,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 23:22:23,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 23:22:23,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 23:22:23,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:22:22" (1/3) ... [2023-08-30 23:22:23,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26abf450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:22:23, skipping insertion in model container [2023-08-30 23:22:23,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:22:23" (2/3) ... [2023-08-30 23:22:23,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26abf450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:22:23, skipping insertion in model container [2023-08-30 23:22:23,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:22:23" (3/3) ... [2023-08-30 23:22:23,525 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2023-08-30 23:22:23,531 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 23:22:23,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 23:22:23,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 23:22:23,539 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 23:22:23,588 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 23:22:23,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2023-08-30 23:22:23,649 INFO L130 PetriNetUnfolder]: 2/65 cut-off events. [2023-08-30 23:22:23,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:23,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-08-30 23:22:23,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 144 flow [2023-08-30 23:22:23,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2023-08-30 23:22:23,661 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 23:22:23,678 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 55 transitions, 116 flow [2023-08-30 23:22:23,680 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 55 transitions, 116 flow [2023-08-30 23:22:23,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 55 transitions, 116 flow [2023-08-30 23:22:23,708 INFO L130 PetriNetUnfolder]: 1/55 cut-off events. [2023-08-30 23:22:23,709 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:23,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-30 23:22:23,710 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-08-30 23:22:25,336 INFO L134 LiptonReduction]: Checked pairs total: 1039 [2023-08-30 23:22:25,337 INFO L136 LiptonReduction]: Total number of compositions: 49 [2023-08-30 23:22:25,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 23:22:25,363 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;@31cb8ffe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 23:22:25,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 23:22:25,366 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-30 23:22:25,367 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 23:22:25,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:25,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 23:22:25,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 23:22:25,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:25,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1655653943, now seen corresponding path program 1 times [2023-08-30 23:22:25,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:25,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032419219] [2023-08-30 23:22:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:25,878 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 23:22:25,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:25,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032419219] [2023-08-30 23:22:25,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032419219] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:25,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:25,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 23:22:25,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600357996] [2023-08-30 23:22:25,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:25,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:22:25,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:25,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:22:25,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:22:25,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 116 [2023-08-30 23:22:25,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 23:22:25,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:25,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 116 [2023-08-30 23:22:25,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:26,015 INFO L130 PetriNetUnfolder]: 40/87 cut-off events. [2023-08-30 23:22:26,015 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 23:22:26,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 87 events. 40/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 262 event pairs, 14 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 170. Up to 74 conditions per place. [2023-08-30 23:22:26,019 INFO L137 encePairwiseOnDemand]: 111/116 looper letters, 14 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-08-30 23:22:26,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 79 flow [2023-08-30 23:22:26,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:22:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:22:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2023-08-30 23:22:26,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660919540229885 [2023-08-30 23:22:26,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2023-08-30 23:22:26,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2023-08-30 23:22:26,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:26,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2023-08-30 23:22:26,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 23:22:26,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 23:22:26,054 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 23:22:26,056 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 197 transitions. [2023-08-30 23:22:26,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 79 flow [2023-08-30 23:22:26,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 23:22:26,061 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 47 flow [2023-08-30 23:22:26,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-30 23:22:26,068 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-08-30 23:22:26,068 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 47 flow [2023-08-30 23:22:26,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 23:22:26,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:26,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:26,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 23:22:26,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 23:22:26,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash 214334654, now seen corresponding path program 1 times [2023-08-30 23:22:26,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:26,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759747767] [2023-08-30 23:22:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:26,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:26,314 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 23:22:26,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:26,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759747767] [2023-08-30 23:22:26,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759747767] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:26,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:26,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:22:26,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403675361] [2023-08-30 23:22:26,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:26,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:22:26,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:26,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:22:26,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:22:26,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 116 [2023-08-30 23:22:26,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 23:22:26,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:26,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 116 [2023-08-30 23:22:26,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:26,363 INFO L130 PetriNetUnfolder]: 18/49 cut-off events. [2023-08-30 23:22:26,363 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 23:22:26,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 49 events. 18/49 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 106 event pairs, 6 based on Foata normal form. 4/51 useless extension candidates. Maximal degree in co-relation 117. Up to 32 conditions per place. [2023-08-30 23:22:26,365 INFO L137 encePairwiseOnDemand]: 112/116 looper letters, 14 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2023-08-30 23:22:26,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 97 flow [2023-08-30 23:22:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:22:26,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:22:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2023-08-30 23:22:26,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574712643678161 [2023-08-30 23:22:26,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 194 transitions. [2023-08-30 23:22:26,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 194 transitions. [2023-08-30 23:22:26,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:26,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 194 transitions. [2023-08-30 23:22:26,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 23:22:26,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 23:22:26,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 23:22:26,390 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 47 flow. Second operand 3 states and 194 transitions. [2023-08-30 23:22:26,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 97 flow [2023-08-30 23:22:26,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 20 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 23:22:26,391 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 63 flow [2023-08-30 23:22:26,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-30 23:22:26,392 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-30 23:22:26,392 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 63 flow [2023-08-30 23:22:26,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 23:22:26,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:26,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:26,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 23:22:26,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 23:22:26,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:26,394 INFO L85 PathProgramCache]: Analyzing trace with hash 280240383, now seen corresponding path program 1 times [2023-08-30 23:22:26,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:26,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839603793] [2023-08-30 23:22:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:26,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:26,569 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 23:22:26,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:26,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839603793] [2023-08-30 23:22:26,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839603793] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:26,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:26,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:22:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611299038] [2023-08-30 23:22:26,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:26,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:22:26,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:26,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:22:26,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:22:26,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 116 [2023-08-30 23:22:26,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 63 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 23:22:26,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:26,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 116 [2023-08-30 23:22:26,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:26,605 INFO L130 PetriNetUnfolder]: 9/31 cut-off events. [2023-08-30 23:22:26,605 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 23:22:26,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 31 events. 9/31 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 3 based on Foata normal form. 4/34 useless extension candidates. Maximal degree in co-relation 84. Up to 13 conditions per place. [2023-08-30 23:22:26,606 INFO L137 encePairwiseOnDemand]: 112/116 looper letters, 12 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2023-08-30 23:22:26,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 109 flow [2023-08-30 23:22:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 23:22:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 23:22:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2023-08-30 23:22:26,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452586206896551 [2023-08-30 23:22:26,608 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 253 transitions. [2023-08-30 23:22:26,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 253 transitions. [2023-08-30 23:22:26,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:26,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 253 transitions. [2023-08-30 23:22:26,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.25) internal successors, (253), 4 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 23:22:26,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 23:22:26,611 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 23:22:26,612 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 63 flow. Second operand 4 states and 253 transitions. [2023-08-30 23:22:26,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 109 flow [2023-08-30 23:22:26,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 20 transitions, 104 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 23:22:26,613 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 74 flow [2023-08-30 23:22:26,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2023-08-30 23:22:26,614 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2023-08-30 23:22:26,614 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 74 flow [2023-08-30 23:22:26,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 23:22:26,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:26,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:26,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 23:22:26,615 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 23:22:26,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:26,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1498754901, now seen corresponding path program 1 times [2023-08-30 23:22:26,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:26,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661624669] [2023-08-30 23:22:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:26,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:26,731 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 23:22:26,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:26,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661624669] [2023-08-30 23:22:26,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661624669] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:26,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:26,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 23:22:26,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900278131] [2023-08-30 23:22:26,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:26,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 23:22:26,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:26,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 23:22:26,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 23:22:26,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 116 [2023-08-30 23:22:26,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 23:22:26,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:26,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 116 [2023-08-30 23:22:26,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:26,763 INFO L130 PetriNetUnfolder]: 10/40 cut-off events. [2023-08-30 23:22:26,763 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-08-30 23:22:26,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 40 events. 10/40 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 88 event pairs, 6 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 121. Up to 28 conditions per place. [2023-08-30 23:22:26,764 INFO L137 encePairwiseOnDemand]: 113/116 looper letters, 12 selfloop transitions, 2 changer transitions 6/21 dead transitions. [2023-08-30 23:22:26,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 148 flow [2023-08-30 23:22:26,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 23:22:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 23:22:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-08-30 23:22:26,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545977011494253 [2023-08-30 23:22:26,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-08-30 23:22:26,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-08-30 23:22:26,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:26,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-08-30 23:22:26,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 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 23:22:26,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 23:22:26,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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 23:22:26,768 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 74 flow. Second operand 3 states and 193 transitions. [2023-08-30 23:22:26,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 148 flow [2023-08-30 23:22:26,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 130 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 23:22:26,770 INFO L231 Difference]: Finished difference. Result has 26 places, 14 transitions, 64 flow [2023-08-30 23:22:26,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=23, 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=64, PETRI_PLACES=26, PETRI_TRANSITIONS=14} [2023-08-30 23:22:26,771 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-08-30 23:22:26,771 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 14 transitions, 64 flow [2023-08-30 23:22:26,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 23:22:26,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 23:22:26,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 23:22:26,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 23:22:26,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 23:22:26,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 23:22:26,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1912696489, now seen corresponding path program 2 times [2023-08-30 23:22:26,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 23:22:26,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25422706] [2023-08-30 23:22:26,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 23:22:26,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 23:22:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 23:22:26,880 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 23:22:26,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 23:22:26,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25422706] [2023-08-30 23:22:26,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25422706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 23:22:26,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 23:22:26,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 23:22:26,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829670401] [2023-08-30 23:22:26,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 23:22:26,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 23:22:26,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 23:22:26,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 23:22:26,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 23:22:26,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 116 [2023-08-30 23:22:26,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 14 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 23:22:26,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 23:22:26,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 116 [2023-08-30 23:22:26,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 23:22:26,914 INFO L130 PetriNetUnfolder]: 3/17 cut-off events. [2023-08-30 23:22:26,915 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 23:22:26,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 17 events. 3/17 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 1 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 52. Up to 10 conditions per place. [2023-08-30 23:22:26,915 INFO L137 encePairwiseOnDemand]: 111/116 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2023-08-30 23:22:26,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 14 transitions, 94 flow [2023-08-30 23:22:26,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 23:22:26,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 23:22:26,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 288 transitions. [2023-08-30 23:22:26,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496551724137931 [2023-08-30 23:22:26,917 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 288 transitions. [2023-08-30 23:22:26,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 288 transitions. [2023-08-30 23:22:26,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 23:22:26,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 288 transitions. [2023-08-30 23:22:26,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 23:22:26,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 23:22:26,920 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 23:22:26,920 INFO L175 Difference]: Start difference. First operand has 26 places, 14 transitions, 64 flow. Second operand 5 states and 288 transitions. [2023-08-30 23:22:26,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 14 transitions, 94 flow [2023-08-30 23:22:26,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 14 transitions, 82 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 23:22:26,921 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-08-30 23:22:26,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-08-30 23:22:26,922 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-08-30 23:22:26,922 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-08-30 23:22:26,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 23:22:26,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-30 23:22:26,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-30 23:22:26,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-30 23:22:26,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 23:22:26,927 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-30 23:22:26,929 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 23:22:26,929 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 23:22:26,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:22:26 BasicIcfg [2023-08-30 23:22:26,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 23:22:26,933 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 23:22:26,933 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 23:22:26,933 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 23:22:26,934 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:22:23" (3/4) ... [2023-08-30 23:22:26,936 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 23:22:26,941 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 23:22:26,941 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 23:22:26,944 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 23:22:26,944 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 23:22:26,944 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 23:22:26,944 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 23:22:26,971 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 23:22:26,971 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 23:22:26,971 INFO L158 Benchmark]: Toolchain (without parser) took 4377.93ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 63.7MB in the beginning and 58.4MB in the end (delta: 5.3MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2023-08-30 23:22:26,972 INFO L158 Benchmark]: CDTParser took 0.92ms. Allocated memory is still 60.8MB. Free memory was 38.5MB in the beginning and 38.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 23:22:26,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.69ms. Allocated memory is still 86.0MB. Free memory was 63.5MB in the beginning and 64.0MB in the end (delta: -494.6kB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2023-08-30 23:22:26,972 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.36ms. Allocated memory is still 86.0MB. Free memory was 64.0MB in the beginning and 61.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:22:26,973 INFO L158 Benchmark]: Boogie Preprocessor took 41.84ms. Allocated memory is still 86.0MB. Free memory was 61.8MB in the beginning and 60.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:22:26,973 INFO L158 Benchmark]: RCFGBuilder took 357.18ms. Allocated memory is still 86.0MB. Free memory was 60.6MB in the beginning and 48.4MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 23:22:26,974 INFO L158 Benchmark]: TraceAbstraction took 3411.04ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 47.6MB in the beginning and 61.5MB in the end (delta: -13.9MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2023-08-30 23:22:26,974 INFO L158 Benchmark]: Witness Printer took 38.16ms. Allocated memory is still 104.9MB. Free memory was 61.5MB in the beginning and 58.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 23:22:26,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92ms. Allocated memory is still 60.8MB. Free memory was 38.5MB in the beginning and 38.4MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 465.69ms. Allocated memory is still 86.0MB. Free memory was 63.5MB in the beginning and 64.0MB in the end (delta: -494.6kB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.36ms. Allocated memory is still 86.0MB. Free memory was 64.0MB in the beginning and 61.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.84ms. Allocated memory is still 86.0MB. Free memory was 61.8MB in the beginning and 60.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 357.18ms. Allocated memory is still 86.0MB. Free memory was 60.6MB in the beginning and 48.4MB in the end (delta: 12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3411.04ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 47.6MB in the beginning and 61.5MB in the end (delta: -13.9MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. * Witness Printer took 38.16ms. Allocated memory is still 104.9MB. Free memory was 61.5MB in the beginning and 58.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 61 PlacesBefore, 19 PlacesAfterwards, 55 TransitionsBefore, 13 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 49 TotalNumberOfCompositions, 1039 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 585, independent: 520, independent conditional: 0, independent unconditional: 520, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 312, independent: 290, independent conditional: 0, independent unconditional: 290, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 585, independent: 230, independent conditional: 0, independent unconditional: 230, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 312, unknown conditional: 0, unknown unconditional: 312] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 82 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 129 IncrementalHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 2 mSDtfsCounter, 129 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=3, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 117 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 23:22:26,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE