./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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 ../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -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 c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:45:17,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:45:17,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:45:17,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:45:17,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:45:17,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:45:17,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:45:17,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:45:17,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:45:17,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:45:17,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:45:17,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:45:17,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:45:17,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:45:17,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:45:17,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:45:17,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:45:17,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:45:17,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:45:17,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:45:17,843 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:45:17,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:45:17,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:45:17,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:45:17,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:45:17,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:45:17,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:45:17,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:45:17,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:45:17,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:45:17,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:45:17,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:45:17,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:45:17,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:45:17,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:45:17,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:45:17,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:45:17,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:45:17,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:45:17,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:45:17,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:45:17,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:45:17,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:45:17,877 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:45:17,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:45:17,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:45:17,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:45:17,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:45:17,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:45:17,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:45:17,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:45:17,881 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:45:17,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:45:17,882 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:45:17,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:45:17,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:45:17,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:45:17,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:45:17,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:45:17,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:45:17,883 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:45:17,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:45:17,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:45:17,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:45:17,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:45:17,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:45:17,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:45:17,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:45:17,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:45:17,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:45:17,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:45:17,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:45:17,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:45:17,886 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:45:17,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:45:17,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:45:17,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 [2022-07-22 21:45:18,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:45:18,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:45:18,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:45:18,102 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:45:18,103 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:45:18,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-07-22 21:45:18,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04f2449b5/033610073c2f438fb7d19a59593969e5/FLAG20397339e [2022-07-22 21:45:18,477 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:45:18,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-07-22 21:45:18,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04f2449b5/033610073c2f438fb7d19a59593969e5/FLAG20397339e [2022-07-22 21:45:18,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04f2449b5/033610073c2f438fb7d19a59593969e5 [2022-07-22 21:45:18,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:45:18,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:45:18,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:45:18,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:45:18,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:45:18,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:45:18" (1/1) ... [2022-07-22 21:45:18,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbf70fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:18, skipping insertion in model container [2022-07-22 21:45:18,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:45:18" (1/1) ... [2022-07-22 21:45:18,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:45:18,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:45:19,086 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-07-22 21:45:19,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:45:19,094 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:45:19,140 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-07-22 21:45:19,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:45:19,155 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:45:19,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:19 WrapperNode [2022-07-22 21:45:19,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:45:19,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:45:19,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:45:19,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:45:19,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:19" (1/1) ... [2022-07-22 21:45:19,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:19" (1/1) ... [2022-07-22 21:45:19,212 INFO L137 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 278 [2022-07-22 21:45:19,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:45:19,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:45:19,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:45:19,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:45:19,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:19" (1/1) ... [2022-07-22 21:45:19,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:19" (1/1) ... [2022-07-22 21:45:19,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:19" (1/1) ... [2022-07-22 21:45:19,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:19" (1/1) ... [2022-07-22 21:45:19,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:19" (1/1) ... [2022-07-22 21:45:19,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:19" (1/1) ... [2022-07-22 21:45:19,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:19" (1/1) ... [2022-07-22 21:45:19,256 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:45:19,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:45:19,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:45:19,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:45:19,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:19" (1/1) ... [2022-07-22 21:45:19,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:45:19,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:45:19,299 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) [2022-07-22 21:45:19,340 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 [2022-07-22 21:45:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:45:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:45:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:45:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:45:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:45:19,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:45:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:45:19,362 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:45:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-22 21:45:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-22 21:45:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-22 21:45:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-22 21:45:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:45:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-07-22 21:45:19,363 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-07-22 21:45:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-07-22 21:45:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-07-22 21:45:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:45:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:45:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:45:19,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:45:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:45:19,365 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:45:19,428 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:45:19,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:45:19,656 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:45:19,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:45:19,714 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:45:19,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:45:19 BoogieIcfgContainer [2022-07-22 21:45:19,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:45:19,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:45:19,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:45:19,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:45:19,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:45:18" (1/3) ... [2022-07-22 21:45:19,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564126df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:45:19, skipping insertion in model container [2022-07-22 21:45:19,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:45:19" (2/3) ... [2022-07-22 21:45:19,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564126df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:45:19, skipping insertion in model container [2022-07-22 21:45:19,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:45:19" (3/3) ... [2022-07-22 21:45:19,757 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2022-07-22 21:45:19,761 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:45:19,768 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:45:19,768 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:45:19,768 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:45:19,830 INFO L135 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-07-22 21:45:19,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 188 transitions, 424 flow [2022-07-22 21:45:19,938 INFO L129 PetriNetUnfolder]: 2/182 cut-off events. [2022-07-22 21:45:19,939 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-22 21:45:19,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 182 events. 2/182 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2022-07-22 21:45:19,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 188 transitions, 424 flow [2022-07-22 21:45:19,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 165 transitions, 366 flow [2022-07-22 21:45:19,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:45:19,966 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@114252c0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31752b37 [2022-07-22 21:45:19,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:45:20,012 INFO L129 PetriNetUnfolder]: 2/164 cut-off events. [2022-07-22 21:45:20,012 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-22 21:45:20,012 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:45:20,018 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:45:20,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:45:20,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:45:20,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1163564544, now seen corresponding path program 1 times [2022-07-22 21:45:20,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:45:20,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499875663] [2022-07-22 21:45:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:45:20,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:45:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:45:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:45:20,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:45:20,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499875663] [2022-07-22 21:45:20,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499875663] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:45:20,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:45:20,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 21:45:20,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800619902] [2022-07-22 21:45:20,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:45:20,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 21:45:20,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:45:20,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 21:45:20,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-22 21:45:20,999 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 188 [2022-07-22 21:45:21,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 165 transitions, 366 flow. Second operand has 13 states, 13 states have (on average 132.23076923076923) internal successors, (1719), 13 states have internal predecessors, (1719), 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) [2022-07-22 21:45:21,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:45:21,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 188 [2022-07-22 21:45:21,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:45:44,164 INFO L129 PetriNetUnfolder]: 185942/279767 cut-off events. [2022-07-22 21:45:44,165 INFO L130 PetriNetUnfolder]: For 36645/36645 co-relation queries the response was YES. [2022-07-22 21:45:45,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 540509 conditions, 279767 events. 185942/279767 cut-off events. For 36645/36645 co-relation queries the response was YES. Maximal size of possible extension queue 9729. Compared 2525979 event pairs, 58254 based on Foata normal form. 4/276904 useless extension candidates. Maximal degree in co-relation 467504. Up to 77083 conditions per place. [2022-07-22 21:45:46,194 INFO L132 encePairwiseOnDemand]: 162/188 looper letters, 144 selfloop transitions, 31 changer transitions 27/308 dead transitions. [2022-07-22 21:45:46,195 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 308 transitions, 1152 flow [2022-07-22 21:45:46,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:45:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:45:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2256 transitions. [2022-07-22 21:45:46,210 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-07-22 21:45:46,210 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2256 transitions. [2022-07-22 21:45:46,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2256 transitions. [2022-07-22 21:45:46,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:45:46,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2256 transitions. [2022-07-22 21:45:46,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 141.0) internal successors, (2256), 16 states have internal predecessors, (2256), 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) [2022-07-22 21:45:46,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 188.0) internal successors, (3196), 17 states have internal predecessors, (3196), 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) [2022-07-22 21:45:46,230 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 188.0) internal successors, (3196), 17 states have internal predecessors, (3196), 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) [2022-07-22 21:45:46,231 INFO L186 Difference]: Start difference. First operand has 182 places, 165 transitions, 366 flow. Second operand 16 states and 2256 transitions. [2022-07-22 21:45:46,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 308 transitions, 1152 flow [2022-07-22 21:45:47,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 308 transitions, 1064 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-07-22 21:45:47,827 INFO L242 Difference]: Finished difference. Result has 195 places, 186 transitions, 552 flow [2022-07-22 21:45:47,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=552, PETRI_PLACES=195, PETRI_TRANSITIONS=186} [2022-07-22 21:45:47,831 INFO L279 CegarLoopForPetriNet]: 182 programPoint places, 13 predicate places. [2022-07-22 21:45:47,831 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 186 transitions, 552 flow [2022-07-22 21:45:47,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 132.23076923076923) internal successors, (1719), 13 states have internal predecessors, (1719), 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) [2022-07-22 21:45:47,833 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:45:47,833 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:45:47,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:45:47,834 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:45:47,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:45:47,835 INFO L85 PathProgramCache]: Analyzing trace with hash -328563082, now seen corresponding path program 2 times [2022-07-22 21:45:47,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:45:47,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015319028] [2022-07-22 21:45:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:45:47,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:45:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:45:48,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:45:48,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:45:48,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015319028] [2022-07-22 21:45:48,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015319028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:45:48,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:45:48,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:45:48,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041751356] [2022-07-22 21:45:48,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:45:48,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:45:48,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:45:48,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:45:48,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:45:48,089 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 188 [2022-07-22 21:45:48,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 186 transitions, 552 flow. Second operand has 10 states, 10 states have (on average 138.9) internal successors, (1389), 10 states have internal predecessors, (1389), 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) [2022-07-22 21:45:48,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:45:48,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 188 [2022-07-22 21:45:48,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand