./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-semi1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/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 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 23:19:35,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 23:19:35,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 23:19:35,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 23:19:35,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 23:19:35,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 23:19:35,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 23:19:35,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 23:19:35,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 23:19:35,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 23:19:35,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 23:19:35,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 23:19:35,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 23:19:35,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 23:19:35,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 23:19:35,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 23:19:35,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 23:19:35,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 23:19:35,775 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 23:19:35,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 23:19:35,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 23:19:35,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 23:19:35,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 23:19:35,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 23:19:35,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 23:19:35,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 23:19:35,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 23:19:35,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 23:19:35,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 23:19:35,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 23:19:35,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 23:19:35,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 23:19:35,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 23:19:35,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 23:19:35,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 23:19:35,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 23:19:35,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 23:19:35,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 23:19:35,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 23:19:35,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 23:19:35,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 23:19:35,808 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 23:19:35,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 23:19:35,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 23:19:35,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 23:19:35,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 23:19:35,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 23:19:35,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 23:19:35,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 23:19:35,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 23:19:35,826 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 23:19:35,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 23:19:35,826 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 23:19:35,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 23:19:35,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 23:19:35,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 23:19:35,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 23:19:35,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 23:19:35,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 23:19:35,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 23:19:35,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 23:19:35,827 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 23:19:35,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 23:19:35,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 23:19:35,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 23:19:35,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 23:19:35,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:19:35,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 23:19:35,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 23:19:35,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 23:19:35,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 23:19:35,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 23:19:35,829 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 23:19:35,829 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 23:19:35,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 23:19:35,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 23:19:35,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1fb758430fdab5e598998cc874ea93afa2de5f622c2b42d836b77952562e01f [2021-12-17 23:19:35,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 23:19:36,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 23:19:36,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 23:19:36,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 23:19:36,009 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 23:19:36,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-semi1.wvr.c [2021-12-17 23:19:36,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0872a6a4/6c60f26da28e4c74b381e2487379f74b/FLAGab135d026 [2021-12-17 23:19:36,369 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 23:19:36,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-semi1.wvr.c [2021-12-17 23:19:36,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0872a6a4/6c60f26da28e4c74b381e2487379f74b/FLAGab135d026 [2021-12-17 23:19:36,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0872a6a4/6c60f26da28e4c74b381e2487379f74b [2021-12-17 23:19:36,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 23:19:36,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 23:19:36,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 23:19:36,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 23:19:36,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 23:19:36,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:19:36" (1/1) ... [2021-12-17 23:19:36,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2310f027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36, skipping insertion in model container [2021-12-17 23:19:36,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:19:36" (1/1) ... [2021-12-17 23:19:36,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 23:19:36,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 23:19:36,957 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/test-semi1.wvr.c[1979,1992] [2021-12-17 23:19:36,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:19:36,964 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 23:19:36,975 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/test-semi1.wvr.c[1979,1992] [2021-12-17 23:19:36,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:19:36,985 INFO L208 MainTranslator]: Completed translation [2021-12-17 23:19:36,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36 WrapperNode [2021-12-17 23:19:36,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 23:19:36,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 23:19:36,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 23:19:36,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 23:19:36,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36" (1/1) ... [2021-12-17 23:19:36,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36" (1/1) ... [2021-12-17 23:19:37,008 INFO L137 Inliner]: procedures = 21, calls = 26, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 71 [2021-12-17 23:19:37,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 23:19:37,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 23:19:37,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 23:19:37,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 23:19:37,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36" (1/1) ... [2021-12-17 23:19:37,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36" (1/1) ... [2021-12-17 23:19:37,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36" (1/1) ... [2021-12-17 23:19:37,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36" (1/1) ... [2021-12-17 23:19:37,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36" (1/1) ... [2021-12-17 23:19:37,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36" (1/1) ... [2021-12-17 23:19:37,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36" (1/1) ... [2021-12-17 23:19:37,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 23:19:37,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 23:19:37,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 23:19:37,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 23:19:37,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36" (1/1) ... [2021-12-17 23:19:37,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:19:37,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:19:37,060 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) [2021-12-17 23:19:37,073 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 [2021-12-17 23:19:37,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 23:19:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-17 23:19:37,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-17 23:19:37,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-17 23:19:37,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-17 23:19:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 23:19:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 23:19:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 23:19:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-17 23:19:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-17 23:19:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 23:19:37,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 23:19:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 23:19:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 23:19:37,091 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-17 23:19:37,136 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 23:19:37,137 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 23:19:37,318 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 23:19:37,355 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 23:19:37,355 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 23:19:37,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:19:37 BoogieIcfgContainer [2021-12-17 23:19:37,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 23:19:37,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 23:19:37,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 23:19:37,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 23:19:37,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:19:36" (1/3) ... [2021-12-17 23:19:37,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebf9ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:19:37, skipping insertion in model container [2021-12-17 23:19:37,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:19:36" (2/3) ... [2021-12-17 23:19:37,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebf9ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:19:37, skipping insertion in model container [2021-12-17 23:19:37,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:19:37" (3/3) ... [2021-12-17 23:19:37,378 INFO L111 eAbstractionObserver]: Analyzing ICFG test-semi1.wvr.c [2021-12-17 23:19:37,381 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-17 23:19:37,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 23:19:37,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 23:19:37,381 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-17 23:19:37,406 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,407 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,408 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,408 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,409 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,412 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-17 23:19:37,415 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-17 23:19:37,446 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:19:37,451 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 23:19:37,455 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-17 23:19:37,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 82 transitions, 180 flow [2021-12-17 23:19:37,517 INFO L129 PetriNetUnfolder]: 3/80 cut-off events. [2021-12-17 23:19:37,517 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 23:19:37,519 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 3/80 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. 0/76 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2021-12-17 23:19:37,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 82 transitions, 180 flow [2021-12-17 23:19:37,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 71 transitions, 154 flow [2021-12-17 23:19:37,547 INFO L129 PetriNetUnfolder]: 3/70 cut-off events. [2021-12-17 23:19:37,547 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-17 23:19:37,547 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:19:37,548 INFO L254 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] [2021-12-17 23:19:37,549 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 23:19:37,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:19:37,554 INFO L85 PathProgramCache]: Analyzing trace with hash -454694740, now seen corresponding path program 1 times [2021-12-17 23:19:37,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:19:37,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601702883] [2021-12-17 23:19:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:19:37,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:19:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:19:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:19:37,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:19:37,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601702883] [2021-12-17 23:19:37,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601702883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:19:37,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:19:37,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 23:19:37,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665419497] [2021-12-17 23:19:37,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:19:37,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 23:19:37,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:19:37,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 23:19:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-17 23:19:37,931 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 82 [2021-12-17 23:19:37,934 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 154 flow. Second operand has 8 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 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) [2021-12-17 23:19:37,934 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:19:37,934 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 82 [2021-12-17 23:19:37,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:19:38,056 INFO L129 PetriNetUnfolder]: 2/92 cut-off events. [2021-12-17 23:19:38,056 INFO L130 PetriNetUnfolder]: For 18/21 co-relation queries the response was YES. [2021-12-17 23:19:38,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 92 events. 2/92 cut-off events. For 18/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 5/94 useless extension candidates. Maximal degree in co-relation 36. Up to 17 conditions per place. [2021-12-17 23:19:38,058 INFO L132 encePairwiseOnDemand]: 68/82 looper letters, 18 selfloop transitions, 4 changer transitions 13/78 dead transitions. [2021-12-17 23:19:38,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 78 transitions, 250 flow [2021-12-17 23:19:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 23:19:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-17 23:19:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 570 transitions. [2021-12-17 23:19:38,074 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6951219512195121 [2021-12-17 23:19:38,075 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 570 transitions. [2021-12-17 23:19:38,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 570 transitions. [2021-12-17 23:19:38,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:19:38,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 570 transitions. [2021-12-17 23:19:38,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 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) [2021-12-17 23:19:38,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-12-17 23:19:38,090 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-12-17 23:19:38,092 INFO L186 Difference]: Start difference. First operand has 75 places, 71 transitions, 154 flow. Second operand 10 states and 570 transitions. [2021-12-17 23:19:38,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 78 transitions, 250 flow [2021-12-17 23:19:38,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 78 transitions, 234 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-17 23:19:38,104 INFO L242 Difference]: Finished difference. Result has 83 places, 65 transitions, 152 flow [2021-12-17 23:19:38,106 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=152, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2021-12-17 23:19:38,109 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2021-12-17 23:19:38,109 INFO L470 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 152 flow [2021-12-17 23:19:38,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 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) [2021-12-17 23:19:38,110 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-17 23:19:38,110 INFO L254 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] [2021-12-17 23:19:38,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 23:19:38,111 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-17 23:19:38,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:19:38,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1050215850, now seen corresponding path program 2 times [2021-12-17 23:19:38,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:19:38,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102305287] [2021-12-17 23:19:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:19:38,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:19:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:19:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 23:19:38,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:19:38,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102305287] [2021-12-17 23:19:38,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102305287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:19:38,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:19:38,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 23:19:38,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437707302] [2021-12-17 23:19:38,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:19:38,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 23:19:38,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:19:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 23:19:38,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-17 23:19:38,300 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 82 [2021-12-17 23:19:38,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 152 flow. Second operand has 8 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 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) [2021-12-17 23:19:38,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-17 23:19:38,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 82 [2021-12-17 23:19:38,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-17 23:19:38,374 INFO L129 PetriNetUnfolder]: 0/62 cut-off events. [2021-12-17 23:19:38,375 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-12-17 23:19:38,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 62 events. 0/62 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 1/63 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-12-17 23:19:38,376 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 0 selfloop transitions, 0 changer transitions 62/62 dead transitions. [2021-12-17 23:19:38,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 62 transitions, 186 flow [2021-12-17 23:19:38,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 23:19:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-17 23:19:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 446 transitions. [2021-12-17 23:19:38,377 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6798780487804879 [2021-12-17 23:19:38,377 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 446 transitions. [2021-12-17 23:19:38,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 446 transitions. [2021-12-17 23:19:38,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-17 23:19:38,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 446 transitions. [2021-12-17 23:19:38,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 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) [2021-12-17 23:19:38,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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) [2021-12-17 23:19:38,380 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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) [2021-12-17 23:19:38,380 INFO L186 Difference]: Start difference. First operand has 83 places, 65 transitions, 152 flow. Second operand 8 states and 446 transitions. [2021-12-17 23:19:38,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 62 transitions, 186 flow [2021-12-17 23:19:38,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 62 transitions, 174 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-12-17 23:19:38,382 INFO L242 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2021-12-17 23:19:38,382 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2021-12-17 23:19:38,383 INFO L334 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2021-12-17 23:19:38,383 INFO L470 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2021-12-17 23:19:38,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 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) [2021-12-17 23:19:38,390 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-17 23:19:38,391 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-12-17 23:19:38,391 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-12-17 23:19:38,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 23:19:38,395 INFO L732 BasicCegarLoop]: Path program histogram: [2] [2021-12-17 23:19:38,396 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-17 23:19:38,396 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 23:19:38,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:19:38 BasicIcfg [2021-12-17 23:19:38,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 23:19:38,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 23:19:38,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 23:19:38,400 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 23:19:38,401 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:19:37" (3/4) ... [2021-12-17 23:19:38,402 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 23:19:38,406 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-17 23:19:38,406 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-17 23:19:38,410 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-12-17 23:19:38,410 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-17 23:19:38,410 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 23:19:38,411 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 23:19:38,447 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 23:19:38,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 23:19:38,451 INFO L158 Benchmark]: Toolchain (without parser) took 1651.82ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 87.0MB in the beginning and 85.9MB in the end (delta: 1.1MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2021-12-17 23:19:38,452 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 75.5MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 23:19:38,452 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.92ms. Allocated memory is still 119.5MB. Free memory was 86.7MB in the beginning and 94.4MB in the end (delta: -7.7MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2021-12-17 23:19:38,452 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.87ms. Allocated memory is still 119.5MB. Free memory was 93.7MB in the beginning and 92.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 23:19:38,452 INFO L158 Benchmark]: Boogie Preprocessor took 18.77ms. Allocated memory is still 119.5MB. Free memory was 92.3MB in the beginning and 91.6MB in the end (delta: 732.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 23:19:38,453 INFO L158 Benchmark]: RCFGBuilder took 344.08ms. Allocated memory is still 119.5MB. Free memory was 91.5MB in the beginning and 78.3MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-17 23:19:38,453 INFO L158 Benchmark]: TraceAbstraction took 1025.85ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 77.6MB in the beginning and 88.0MB in the end (delta: -10.4MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2021-12-17 23:19:38,453 INFO L158 Benchmark]: Witness Printer took 49.41ms. Allocated memory is still 144.7MB. Free memory was 88.0MB in the beginning and 85.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 23:19:38,455 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 75.5MB. Free memory is still 33.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.92ms. Allocated memory is still 119.5MB. Free memory was 86.7MB in the beginning and 94.4MB in the end (delta: -7.7MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.87ms. Allocated memory is still 119.5MB. Free memory was 93.7MB in the beginning and 92.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.77ms. Allocated memory is still 119.5MB. Free memory was 92.3MB in the beginning and 91.6MB in the end (delta: 732.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 344.08ms. Allocated memory is still 119.5MB. Free memory was 91.5MB in the beginning and 78.3MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1025.85ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 77.6MB in the beginning and 88.0MB in the end (delta: -10.4MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Witness Printer took 49.41ms. Allocated memory is still 144.7MB. Free memory was 88.0MB in the beginning and 85.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 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, 90 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: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 164 IncrementalHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 24 mSDtfsCounter, 164 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 472 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! [2021-12-17 23:19:38,485 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