./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe006_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 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/pthread-wmm/safe006_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash df23f0209046563f2c8cd43b2cbc25b8b8444cdc ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-96f1638 [2020-12-02 12:06:22,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:06:22,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:06:23,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:06:23,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:06:23,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:06:23,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:06:23,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:06:23,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:06:23,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:06:23,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:06:23,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:06:23,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:06:23,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:06:23,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:06:23,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:06:23,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:06:23,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:06:23,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:06:23,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:06:23,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:06:23,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:06:23,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:06:23,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:06:23,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:06:23,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:06:23,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:06:23,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:06:23,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:06:23,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:06:23,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:06:23,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:06:23,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:06:23,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:06:23,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:06:23,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:06:23,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:06:23,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:06:23,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:06:23,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:06:23,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:06:23,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:06:23,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:06:23,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:06:23,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:06:23,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:06:23,123 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:06:23,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:06:23,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:06:23,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:06:23,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:06:23,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:06:23,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:06:23,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:06:23,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:06:23,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:06:23,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:06:23,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:06:23,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:06:23,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:06:23,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:06:23,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:06:23,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:06:23,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:06:23,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:06:23,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:06:23,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:06:23,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:06:23,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:06:23,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:06:23,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:06:23,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df23f0209046563f2c8cd43b2cbc25b8b8444cdc [2020-12-02 12:06:23,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:06:23,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:06:23,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:06:23,585 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:06:23,587 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:06:23,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe006_tso.opt.i [2020-12-02 12:06:23,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c6185da/26ae1230142f412facb88253e7795ce4/FLAG7c6859064 [2020-12-02 12:06:24,417 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:06:24,418 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe006_tso.opt.i [2020-12-02 12:06:24,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c6185da/26ae1230142f412facb88253e7795ce4/FLAG7c6859064 [2020-12-02 12:06:24,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c6185da/26ae1230142f412facb88253e7795ce4 [2020-12-02 12:06:24,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:06:24,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:06:24,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:06:24,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:06:24,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:06:24,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:06:24" (1/1) ... [2020-12-02 12:06:24,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432dcfdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:24, skipping insertion in model container [2020-12-02 12:06:24,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:06:24" (1/1) ... [2020-12-02 12:06:24,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:06:24,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:06:25,011 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe006_tso.opt.i[949,962] [2020-12-02 12:06:25,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:06:25,258 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:06:25,278 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe006_tso.opt.i[949,962] [2020-12-02 12:06:25,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:06:25,462 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:06:25,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:25 WrapperNode [2020-12-02 12:06:25,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:06:25,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:06:25,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:06:25,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:06:25,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:25" (1/1) ... [2020-12-02 12:06:25,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:25" (1/1) ... [2020-12-02 12:06:25,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:06:25,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:06:25,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:06:25,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:06:25,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:25" (1/1) ... [2020-12-02 12:06:25,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:25" (1/1) ... [2020-12-02 12:06:25,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:25" (1/1) ... [2020-12-02 12:06:25,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:25" (1/1) ... [2020-12-02 12:06:25,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:25" (1/1) ... [2020-12-02 12:06:25,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:25" (1/1) ... [2020-12-02 12:06:25,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:25" (1/1) ... [2020-12-02 12:06:25,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:06:25,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:06:25,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:06:25,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:06:25,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:06:25,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:06:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:06:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:06:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:06:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:06:25,770 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:06:25,771 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:06:25,771 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:06:25,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:06:25,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:06:25,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:06:25,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:06:25,774 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-02 12:06:26,412 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:06:26,413 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:06:26,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:06:26 BoogieIcfgContainer [2020-12-02 12:06:26,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:06:26,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:06:26,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:06:26,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:06:26,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:06:24" (1/3) ... [2020-12-02 12:06:26,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2976bcf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:06:26, skipping insertion in model container [2020-12-02 12:06:26,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:25" (2/3) ... [2020-12-02 12:06:26,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2976bcf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:06:26, skipping insertion in model container [2020-12-02 12:06:26,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:06:26" (3/3) ... [2020-12-02 12:06:26,429 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_tso.opt.i [2020-12-02 12:06:26,447 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:06:26,448 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:06:26,452 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:06:26,453 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:06:26,489 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,490 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,490 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,490 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,491 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,491 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,491 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,492 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,492 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,492 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,492 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,494 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,495 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,495 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,495 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,498 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,501 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,501 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,502 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,503 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:26,511 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:06:26,525 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-02 12:06:26,568 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:06:26,569 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:06:26,569 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:06:26,570 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:06:26,570 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:06:26,571 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:06:26,571 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:06:26,571 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:06:26,586 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:06:26,588 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-02 12:06:26,591 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-02 12:06:26,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2020-12-02 12:06:26,636 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2020-12-02 12:06:26,636 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:06:26,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2020-12-02 12:06:26,643 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2020-12-02 12:06:29,347 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:06:29,653 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:06:29,753 INFO L131 LiptonReduction]: Checked pairs total: 1534 [2020-12-02 12:06:29,753 INFO L133 LiptonReduction]: Total number of compositions: 54 [2020-12-02 12:06:29,761 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-12-02 12:06:29,775 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-12-02 12:06:29,778 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-02 12:06:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 12:06:29,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:29,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 12:06:29,787 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:29,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:29,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1865753681, now seen corresponding path program 1 times [2020-12-02 12:06:29,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:29,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084974173] [2020-12-02 12:06:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:30,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084974173] [2020-12-02 12:06:30,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:30,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:06:30,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898910822] [2020-12-02 12:06:30,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:06:30,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:30,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:06:30,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:06:30,061 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-12-02 12:06:30,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:30,089 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-12-02 12:06:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:06:30,091 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-02 12:06:30,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:30,102 INFO L225 Difference]: With dead ends: 90 [2020-12-02 12:06:30,102 INFO L226 Difference]: Without dead ends: 74 [2020-12-02 12:06:30,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:06:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-02 12:06:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-02 12:06:30,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-02 12:06:30,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-12-02 12:06:30,150 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-12-02 12:06:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:30,150 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-12-02 12:06:30,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:06:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-12-02 12:06:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-02 12:06:30,151 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:30,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:30,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:06:30,152 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:30,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:30,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2003798512, now seen corresponding path program 1 times [2020-12-02 12:06:30,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:30,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780123473] [2020-12-02 12:06:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:30,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780123473] [2020-12-02 12:06:30,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:30,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:06:30,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216842234] [2020-12-02 12:06:30,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:06:30,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:30,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:06:30,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:06:30,390 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-12-02 12:06:30,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:30,427 INFO L93 Difference]: Finished difference Result 88 states and 179 transitions. [2020-12-02 12:06:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:06:30,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-02 12:06:30,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:30,429 INFO L225 Difference]: With dead ends: 88 [2020-12-02 12:06:30,430 INFO L226 Difference]: Without dead ends: 72 [2020-12-02 12:06:30,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:06:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-02 12:06:30,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-12-02 12:06:30,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-02 12:06:30,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-12-02 12:06:30,442 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 7 [2020-12-02 12:06:30,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:30,443 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-12-02 12:06:30,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:06:30,443 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-12-02 12:06:30,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:06:30,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:30,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:30,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:06:30,445 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:30,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:30,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1988772591, now seen corresponding path program 1 times [2020-12-02 12:06:30,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:30,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154380802] [2020-12-02 12:06:30,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:30,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154380802] [2020-12-02 12:06:30,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:30,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:06:30,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497134192] [2020-12-02 12:06:30,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:06:30,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:30,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:06:30,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:06:30,558 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 5 states. [2020-12-02 12:06:30,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:30,673 INFO L93 Difference]: Finished difference Result 123 states and 245 transitions. [2020-12-02 12:06:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 12:06:30,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-02 12:06:30,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:30,678 INFO L225 Difference]: With dead ends: 123 [2020-12-02 12:06:30,678 INFO L226 Difference]: Without dead ends: 84 [2020-12-02 12:06:30,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:06:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-02 12:06:30,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2020-12-02 12:06:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-02 12:06:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 136 transitions. [2020-12-02 12:06:30,700 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 136 transitions. Word has length 8 [2020-12-02 12:06:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:30,701 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 136 transitions. [2020-12-02 12:06:30,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:06:30,702 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 136 transitions. [2020-12-02 12:06:30,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:06:30,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:30,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:30,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:06:30,704 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:30,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1988232509, now seen corresponding path program 1 times [2020-12-02 12:06:30,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:30,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397224219] [2020-12-02 12:06:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:30,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397224219] [2020-12-02 12:06:30,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:30,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:06:30,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136572709] [2020-12-02 12:06:30,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:06:30,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:30,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:06:30,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:06:30,838 INFO L87 Difference]: Start difference. First operand 66 states and 136 transitions. Second operand 5 states. [2020-12-02 12:06:30,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:30,862 INFO L93 Difference]: Finished difference Result 72 states and 140 transitions. [2020-12-02 12:06:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:06:30,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-02 12:06:30,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:30,867 INFO L225 Difference]: With dead ends: 72 [2020-12-02 12:06:30,867 INFO L226 Difference]: Without dead ends: 60 [2020-12-02 12:06:30,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:06:30,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-02 12:06:30,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-02 12:06:30,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-02 12:06:30,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 120 transitions. [2020-12-02 12:06:30,892 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 120 transitions. Word has length 8 [2020-12-02 12:06:30,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:30,892 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 120 transitions. [2020-12-02 12:06:30,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:06:30,893 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 120 transitions. [2020-12-02 12:06:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:06:30,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:30,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:30,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:06:30,895 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:30,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:30,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1522428958, now seen corresponding path program 1 times [2020-12-02 12:06:30,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:30,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60700128] [2020-12-02 12:06:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:31,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60700128] [2020-12-02 12:06:31,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:31,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:06:31,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098725659] [2020-12-02 12:06:31,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:06:31,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:31,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:06:31,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:06:31,017 INFO L87 Difference]: Start difference. First operand 60 states and 120 transitions. Second operand 6 states. [2020-12-02 12:06:31,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:31,060 INFO L93 Difference]: Finished difference Result 75 states and 145 transitions. [2020-12-02 12:06:31,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:06:31,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-02 12:06:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:31,062 INFO L225 Difference]: With dead ends: 75 [2020-12-02 12:06:31,062 INFO L226 Difference]: Without dead ends: 42 [2020-12-02 12:06:31,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:06:31,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-02 12:06:31,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-02 12:06:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-02 12:06:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-12-02 12:06:31,066 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 9 [2020-12-02 12:06:31,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:31,066 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-12-02 12:06:31,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:06:31,067 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-12-02 12:06:31,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:06:31,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:31,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:31,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:06:31,068 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:31,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:31,068 INFO L82 PathProgramCache]: Analyzing trace with hash 567543910, now seen corresponding path program 1 times [2020-12-02 12:06:31,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:31,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457635383] [2020-12-02 12:06:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 12:06:31,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457635383] [2020-12-02 12:06:31,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:31,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:06:31,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823302131] [2020-12-02 12:06:31,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:06:31,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:31,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:06:31,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:06:31,149 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 6 states. [2020-12-02 12:06:31,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:31,187 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2020-12-02 12:06:31,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:06:31,188 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-02 12:06:31,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:31,188 INFO L225 Difference]: With dead ends: 36 [2020-12-02 12:06:31,188 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:06:31,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:06:31,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:06:31,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:06:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:06:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:06:31,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-12-02 12:06:31,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:31,190 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:06:31,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:06:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:06:31,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:06:31,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:06:31,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:06:31 BasicIcfg [2020-12-02 12:06:31,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:06:31,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:06:31,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:06:31,195 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:06:31,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:06:26" (3/4) ... [2020-12-02 12:06:31,202 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:06:31,211 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:06:31,211 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:06:31,217 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-02 12:06:31,218 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:06:31,218 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:06:31,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:06:31,284 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:06:31,285 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:06:31,289 INFO L168 Benchmark]: Toolchain (without parser) took 6584.30 ms. Allocated memory was 54.5 MB in the beginning and 98.6 MB in the end (delta: 44.0 MB). Free memory was 31.3 MB in the beginning and 79.9 MB in the end (delta: -48.5 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:31,290 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 37.7 MB. Free memory was 20.3 MB in the beginning and 20.3 MB in the end (delta: 43.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:06:31,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.00 ms. Allocated memory is still 54.5 MB. Free memory was 31.1 MB in the beginning and 30.3 MB in the end (delta: 772.3 kB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:31,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.16 ms. Allocated memory is still 54.5 MB. Free memory was 30.3 MB in the beginning and 28.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:31,292 INFO L168 Benchmark]: Boogie Preprocessor took 59.85 ms. Allocated memory is still 54.5 MB. Free memory was 28.4 MB in the beginning and 27.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:31,293 INFO L168 Benchmark]: RCFGBuilder took 785.10 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 27.1 MB in the beginning and 36.3 MB in the end (delta: -9.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:31,294 INFO L168 Benchmark]: TraceAbstraction took 4774.08 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 36.0 MB in the beginning and 36.5 MB in the end (delta: -517.7 kB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:31,296 INFO L168 Benchmark]: Witness Printer took 89.77 ms. Allocated memory is still 98.6 MB. Free memory was 36.5 MB in the beginning and 79.9 MB in the end (delta: -43.4 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:31,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 37.7 MB. Free memory was 20.3 MB in the beginning and 20.3 MB in the end (delta: 43.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 759.00 ms. Allocated memory is still 54.5 MB. Free memory was 31.1 MB in the beginning and 30.3 MB in the end (delta: 772.3 kB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.16 ms. Allocated memory is still 54.5 MB. Free memory was 30.3 MB in the beginning and 28.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.85 ms. Allocated memory is still 54.5 MB. Free memory was 28.4 MB in the beginning and 27.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 785.10 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 27.1 MB in the beginning and 36.3 MB in the end (delta: -9.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4774.08 ms. Allocated memory was 67.1 MB in the beginning and 98.6 MB in the end (delta: 31.5 MB). Free memory was 36.0 MB in the beginning and 36.5 MB in the end (delta: -517.7 kB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * Witness Printer took 89.77 ms. Allocated memory is still 98.6 MB. Free memory was 36.5 MB in the beginning and 79.9 MB in the end (delta: -43.4 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 504 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 66 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 17 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 54 TotalNumberOfCompositions, 1534 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 98 SDtfs, 105 SDslu, 143 SDs, 0 SdLazy, 53 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1270 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...