./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c --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/weaver/test-semi1.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 e1fb758430fdab5e598998cc874ea93afa2de5f622c2b42d836b77952562e01f --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 [2023-08-31 04:06:18,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 04:06:18,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 04:06:18,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 04:06:18,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 04:06:18,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 04:06:18,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 04:06:18,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 04:06:18,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 04:06:18,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 04:06:18,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 04:06:18,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 04:06:18,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 04:06:18,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 04:06:18,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 04:06:18,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 04:06:18,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 04:06:18,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 04:06:18,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 04:06:18,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 04:06:18,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 04:06:18,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 04:06:18,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 04:06:18,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 04:06:18,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 04:06:18,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 04:06:18,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 04:06:18,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 04:06:18,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 04:06:18,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 04:06:18,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 04:06:18,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 04:06:18,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 04:06:18,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 04:06:18,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 04:06:18,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 04:06:18,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 04:06:18,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 04:06:18,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 04:06:18,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 04:06:18,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 04:06:18,765 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 04:06:18,802 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 04:06:18,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 04:06:18,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 04:06:18,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 04:06:18,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 04:06:18,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 04:06:18,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 04:06:18,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 04:06:18,806 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 04:06:18,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 04:06:18,807 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 04:06:18,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 04:06:18,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 04:06:18,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 04:06:18,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 04:06:18,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 04:06:18,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 04:06:18,808 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 04:06:18,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 04:06:18,808 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 04:06:18,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 04:06:18,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 04:06:18,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 04:06:18,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 04:06:18,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 04:06:18,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 04:06:18,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 04:06:18,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 04:06:18,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 04:06:18,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 04:06:18,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 04:06:18,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 04:06:18,811 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 04:06:18,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 04:06:18,811 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 04:06:18,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1fb758430fdab5e598998cc874ea93afa2de5f622c2b42d836b77952562e01f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 04:06:19,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 04:06:19,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 04:06:19,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 04:06:19,122 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 04:06:19,122 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 04:06:19,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c [2023-08-31 04:06:20,302 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 04:06:20,523 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 04:06:20,523 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c [2023-08-31 04:06:20,530 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3de8e2ad/3ae85118774e4ef78ce3de5a5016f3d5/FLAG3d0e3f164 [2023-08-31 04:06:20,546 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3de8e2ad/3ae85118774e4ef78ce3de5a5016f3d5 [2023-08-31 04:06:20,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 04:06:20,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 04:06:20,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 04:06:20,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 04:06:20,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 04:06:20,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6482562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20, skipping insertion in model container [2023-08-31 04:06:20,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 04:06:20,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 04:06:20,697 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c[1979,1992] [2023-08-31 04:06:20,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 04:06:20,708 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 04:06:20,722 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c[1979,1992] [2023-08-31 04:06:20,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 04:06:20,729 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 04:06:20,729 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 04:06:20,735 INFO L208 MainTranslator]: Completed translation [2023-08-31 04:06:20,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20 WrapperNode [2023-08-31 04:06:20,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 04:06:20,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 04:06:20,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 04:06:20,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 04:06:20,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,763 INFO L138 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 73 [2023-08-31 04:06:20,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 04:06:20,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 04:06:20,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 04:06:20,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 04:06:20,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,816 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 04:06:20,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 04:06:20,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 04:06:20,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 04:06:20,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20" (1/1) ... [2023-08-31 04:06:20,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 04:06:20,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 04:06:20,859 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) [2023-08-31 04:06:20,869 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 [2023-08-31 04:06:20,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 04:06:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 04:06:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 04:06:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 04:06:20,898 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 04:06:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 04:06:20,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 04:06:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 04:06:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 04:06:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 04:06:20,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 04:06:20,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 04:06:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 04:06:20,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 04:06:20,901 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 04:06:21,002 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 04:06:21,004 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 04:06:21,187 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 04:06:21,223 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 04:06:21,235 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 04:06:21,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:06:21 BoogieIcfgContainer [2023-08-31 04:06:21,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 04:06:21,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 04:06:21,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 04:06:21,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 04:06:21,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 04:06:20" (1/3) ... [2023-08-31 04:06:21,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17419c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 04:06:21, skipping insertion in model container [2023-08-31 04:06:21,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 04:06:20" (2/3) ... [2023-08-31 04:06:21,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17419c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 04:06:21, skipping insertion in model container [2023-08-31 04:06:21,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:06:21" (3/3) ... [2023-08-31 04:06:21,250 INFO L112 eAbstractionObserver]: Analyzing ICFG test-semi1.wvr.c [2023-08-31 04:06:21,256 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 04:06:21,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 04:06:21,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 04:06:21,265 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 04:06:21,349 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 04:06:21,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 75 transitions, 166 flow [2023-08-31 04:06:21,438 INFO L130 PetriNetUnfolder]: 3/73 cut-off events. [2023-08-31 04:06:21,438 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 04:06:21,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 3/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-08-31 04:06:21,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 75 transitions, 166 flow [2023-08-31 04:06:21,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 65 transitions, 142 flow [2023-08-31 04:06:21,452 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 04:06:21,464 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 142 flow [2023-08-31 04:06:21,472 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 142 flow [2023-08-31 04:06:21,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 142 flow [2023-08-31 04:06:21,511 INFO L130 PetriNetUnfolder]: 3/65 cut-off events. [2023-08-31 04:06:21,516 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 04:06:21,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 65 events. 3/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 17 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. [2023-08-31 04:06:21,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 108 [2023-08-31 04:06:23,746 INFO L134 LiptonReduction]: Checked pairs total: 173 [2023-08-31 04:06:23,746 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-31 04:06:23,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 04:06:23,763 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;@3100cf75, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 04:06:23,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 04:06:23,770 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-08-31 04:06:23,770 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 04:06:23,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:06:23,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:06:23,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:06:23,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:06:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2115014791, now seen corresponding path program 1 times [2023-08-31 04:06:23,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:06:23,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31341037] [2023-08-31 04:06:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:06:23,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:06:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:06:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:06:24,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:06:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31341037] [2023-08-31 04:06:24,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31341037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:06:24,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:06:24,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 04:06:24,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540606671] [2023-08-31 04:06:24,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:06:24,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 04:06:24,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:06:24,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 04:06:24,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 04:06:24,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 140 [2023-08-31 04:06:24,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 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) [2023-08-31 04:06:24,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:06:24,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 140 [2023-08-31 04:06:24,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:06:24,339 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2023-08-31 04:06:24,339 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 04:06:24,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 32 events. 8/32 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 1 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 45. Up to 13 conditions per place. [2023-08-31 04:06:24,342 INFO L137 encePairwiseOnDemand]: 136/140 looper letters, 10 selfloop transitions, 2 changer transitions 10/22 dead transitions. [2023-08-31 04:06:24,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 22 transitions, 112 flow [2023-08-31 04:06:24,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 04:06:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 04:06:24,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2023-08-31 04:06:24,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767857142857143 [2023-08-31 04:06:24,362 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 267 transitions. [2023-08-31 04:06:24,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 267 transitions. [2023-08-31 04:06:24,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:06:24,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 267 transitions. [2023-08-31 04:06:24,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 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) [2023-08-31 04:06:24,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2023-08-31 04:06:24,381 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2023-08-31 04:06:24,382 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 34 flow. Second operand 4 states and 267 transitions. [2023-08-31 04:06:24,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 22 transitions, 112 flow [2023-08-31 04:06:24,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 22 transitions, 96 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 04:06:24,386 INFO L231 Difference]: Finished difference. Result has 18 places, 11 transitions, 36 flow [2023-08-31 04:06:24,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=36, PETRI_PLACES=18, PETRI_TRANSITIONS=11} [2023-08-31 04:06:24,392 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 0 predicate places. [2023-08-31 04:06:24,392 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 11 transitions, 36 flow [2023-08-31 04:06:24,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 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) [2023-08-31 04:06:24,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 04:06:24,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 04:06:24,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 04:06:24,396 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 04:06:24,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 04:06:24,397 INFO L85 PathProgramCache]: Analyzing trace with hash -876766747, now seen corresponding path program 2 times [2023-08-31 04:06:24,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 04:06:24,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884760591] [2023-08-31 04:06:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 04:06:24,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 04:06:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 04:06:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 04:06:24,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 04:06:24,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884760591] [2023-08-31 04:06:24,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884760591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 04:06:24,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 04:06:24,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 04:06:24,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785638816] [2023-08-31 04:06:24,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 04:06:24,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 04:06:24,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 04:06:24,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 04:06:24,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 04:06:24,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 140 [2023-08-31 04:06:24,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 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) [2023-08-31 04:06:24,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 04:06:24,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 140 [2023-08-31 04:06:24,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 04:06:24,589 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-08-31 04:06:24,590 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 04:06:24,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 14 events. 2/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 1 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 17. Up to 11 conditions per place. [2023-08-31 04:06:24,591 INFO L137 encePairwiseOnDemand]: 136/140 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-31 04:06:24,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 11 transitions, 56 flow [2023-08-31 04:06:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 04:06:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 04:06:24,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2023-08-31 04:06:24,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2023-08-31 04:06:24,594 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 256 transitions. [2023-08-31 04:06:24,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 256 transitions. [2023-08-31 04:06:24,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 04:06:24,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 256 transitions. [2023-08-31 04:06:24,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 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) [2023-08-31 04:06:24,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2023-08-31 04:06:24,599 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 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) [2023-08-31 04:06:24,599 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 36 flow. Second operand 4 states and 256 transitions. [2023-08-31 04:06:24,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 11 transitions, 56 flow [2023-08-31 04:06:24,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 50 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 04:06:24,600 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-08-31 04:06:24,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-08-31 04:06:24,601 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -2 predicate places. [2023-08-31 04:06:24,601 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-08-31 04:06:24,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 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) [2023-08-31 04:06:24,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-31 04:06:24,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-31 04:06:24,607 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-31 04:06:24,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 04:06:24,607 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2023-08-31 04:06:24,614 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 04:06:24,614 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 04:06:24,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 04:06:24 BasicIcfg [2023-08-31 04:06:24,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 04:06:24,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 04:06:24,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 04:06:24,624 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 04:06:24,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 04:06:21" (3/4) ... [2023-08-31 04:06:24,626 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 04:06:24,631 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-31 04:06:24,631 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-31 04:06:24,636 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-31 04:06:24,636 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 04:06:24,636 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-31 04:06:24,636 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 04:06:24,669 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 04:06:24,671 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 04:06:24,672 INFO L158 Benchmark]: Toolchain (without parser) took 4122.12ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 42.8MB in the beginning and 44.2MB in the end (delta: -1.4MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2023-08-31 04:06:24,673 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory was 30.8MB in the beginning and 30.8MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 04:06:24,675 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.88ms. Allocated memory is still 65.0MB. Free memory was 42.6MB in the beginning and 31.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-31 04:06:24,675 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.26ms. Allocated memory is still 65.0MB. Free memory was 31.9MB in the beginning and 30.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 04:06:24,676 INFO L158 Benchmark]: Boogie Preprocessor took 54.81ms. Allocated memory is still 65.0MB. Free memory was 30.4MB in the beginning and 45.5MB in the end (delta: -15.0MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2023-08-31 04:06:24,676 INFO L158 Benchmark]: RCFGBuilder took 419.86ms. Allocated memory is still 65.0MB. Free memory was 45.2MB in the beginning and 31.8MB in the end (delta: 13.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-31 04:06:24,678 INFO L158 Benchmark]: TraceAbstraction took 3382.00ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 31.0MB in the beginning and 47.1MB in the end (delta: -16.1MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2023-08-31 04:06:24,678 INFO L158 Benchmark]: Witness Printer took 48.33ms. Allocated memory is still 96.5MB. Free memory was 47.1MB in the beginning and 44.2MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 04:06:24,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 52.4MB. Free memory was 30.8MB in the beginning and 30.8MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.88ms. Allocated memory is still 65.0MB. Free memory was 42.6MB in the beginning and 31.9MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.26ms. Allocated memory is still 65.0MB. Free memory was 31.9MB in the beginning and 30.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.81ms. Allocated memory is still 65.0MB. Free memory was 30.4MB in the beginning and 45.5MB in the end (delta: -15.0MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * RCFGBuilder took 419.86ms. Allocated memory is still 65.0MB. Free memory was 45.2MB in the beginning and 31.8MB in the end (delta: 13.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3382.00ms. Allocated memory was 65.0MB in the beginning and 96.5MB in the end (delta: 31.5MB). Free memory was 31.0MB in the beginning and 47.1MB in the end (delta: -16.1MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * Witness Printer took 48.33ms. Allocated memory is still 96.5MB. Free memory was 47.1MB in the beginning and 44.2MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 69 PlacesBefore, 18 PlacesAfterwards, 65 TransitionsBefore, 11 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 65 TotalNumberOfCompositions, 173 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 160, independent: 147, independent conditional: 0, independent unconditional: 147, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 66, independent: 63, independent conditional: 0, independent unconditional: 63, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 160, independent: 84, independent conditional: 0, independent unconditional: 84, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 66, unknown conditional: 0, unknown unconditional: 66] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 72]: 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, 83 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: 3.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=1, InterpolantAutomatonStates: 8, 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, 0.4s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 168 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2023-08-31 04:06:24,696 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