./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe006_pso.oepc.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_pso.oepc.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 9a0b11f92f532492d7d2cba0513d63f9ff116a54 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:06:15,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:06:15,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:06:15,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:06:15,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:06:15,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:06:15,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:06:15,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:06:15,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:06:15,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:06:15,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:06:15,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:06:15,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:06:15,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:06:15,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:06:15,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:06:15,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:06:15,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:06:15,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:06:15,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:06:15,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:06:15,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:06:15,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:06:15,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:06:15,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:06:15,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:06:15,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:06:15,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:06:15,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:06:15,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:06:15,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:06:15,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:06:15,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:06:15,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:06:15,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:06:15,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:06:15,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:06:15,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:06:15,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:06:15,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:06:15,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:06:15,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:06:15,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:06:15,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:06:15,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:06:15,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:06:15,407 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:06:15,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:06:15,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:06:15,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:06:15,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:06:15,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:06:15,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:06:15,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:06:15,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:06:15,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:06:15,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:06:15,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:06:15,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:06:15,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:06:15,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:06:15,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:06:15,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:06:15,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:06:15,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:06:15,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:06:15,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:06:15,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:06:15,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:06:15,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:06:15,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:06:15,414 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a0b11f92f532492d7d2cba0513d63f9ff116a54 [2020-12-02 12:06:15,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:06:15,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:06:15,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:06:15,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:06:15,878 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:06:15,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe006_pso.oepc.i [2020-12-02 12:06:15,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f054a82e7/607016f1fefe44f98c312ac9c4f95206/FLAG983325e9d [2020-12-02 12:06:16,836 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:06:16,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe006_pso.oepc.i [2020-12-02 12:06:16,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f054a82e7/607016f1fefe44f98c312ac9c4f95206/FLAG983325e9d [2020-12-02 12:06:17,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f054a82e7/607016f1fefe44f98c312ac9c4f95206 [2020-12-02 12:06:17,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:06:17,038 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:06:17,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:06:17,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:06:17,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:06:17,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:06:17" (1/1) ... [2020-12-02 12:06:17,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47ddae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17, skipping insertion in model container [2020-12-02 12:06:17,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:06:17" (1/1) ... [2020-12-02 12:06:17,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:06:17,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:06:17,339 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_pso.oepc.i[950,963] [2020-12-02 12:06:17,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:06:17,593 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:06:17,608 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_pso.oepc.i[950,963] [2020-12-02 12:06:17,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:06:17,748 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:06:17,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17 WrapperNode [2020-12-02 12:06:17,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:06:17,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:06:17,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:06:17,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:06:17,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17" (1/1) ... [2020-12-02 12:06:17,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17" (1/1) ... [2020-12-02 12:06:17,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:06:17,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:06:17,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:06:17,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:06:17,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17" (1/1) ... [2020-12-02 12:06:17,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17" (1/1) ... [2020-12-02 12:06:17,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17" (1/1) ... [2020-12-02 12:06:17,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17" (1/1) ... [2020-12-02 12:06:17,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17" (1/1) ... [2020-12-02 12:06:17,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17" (1/1) ... [2020-12-02 12:06:17,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17" (1/1) ... [2020-12-02 12:06:17,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:06:17,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:06:17,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:06:17,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:06:17,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17" (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 12:06:17,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:06:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:06:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:06:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:06:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:06:17,956 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:06:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:06:17,957 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:06:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:06:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:06:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:06:17,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:06:17,960 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 12:06:18,492 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:06:18,492 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:06:18,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:06:18 BoogieIcfgContainer [2020-12-02 12:06:18,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:06:18,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:06:18,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:06:18,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:06:18,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:06:17" (1/3) ... [2020-12-02 12:06:18,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db04bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:06:18, skipping insertion in model container [2020-12-02 12:06:18,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:06:17" (2/3) ... [2020-12-02 12:06:18,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db04bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:06:18, skipping insertion in model container [2020-12-02 12:06:18,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:06:18" (3/3) ... [2020-12-02 12:06:18,510 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc.i [2020-12-02 12:06:18,528 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:06:18,528 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:06:18,533 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:06:18,535 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:06:18,587 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,587 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,587 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,588 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,588 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,589 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,589 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,591 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,592 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,594 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,594 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,595 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,595 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,595 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,596 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,597 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,597 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,598 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,598 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,602 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,603 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,603 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,604 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,612 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,612 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:06:18,615 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:06:18,630 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-02 12:06:18,676 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:06:18,676 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:06:18,677 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:06:18,677 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:06:18,677 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:06:18,677 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:06:18,677 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:06:18,677 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:06:18,695 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:06:18,697 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-02 12:06:18,702 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 132 flow [2020-12-02 12:06:18,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2020-12-02 12:06:18,793 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2020-12-02 12:06:18,794 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:06:18,806 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 12:06:18,815 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2020-12-02 12:06:21,302 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:06:21,616 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:06:21,720 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-02 12:06:21,723 INFO L131 LiptonReduction]: Checked pairs total: 1534 [2020-12-02 12:06:21,723 INFO L133 LiptonReduction]: Total number of compositions: 54 [2020-12-02 12:06:21,730 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-12-02 12:06:21,744 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-12-02 12:06:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-02 12:06:21,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 12:06:21,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:21,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 12:06:21,753 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:21,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:21,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1865753681, now seen corresponding path program 1 times [2020-12-02 12:06:21,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:21,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037512394] [2020-12-02 12:06:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:21,947 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 12:06:21,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037512394] [2020-12-02 12:06:21,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:21,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:06:21,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042865491] [2020-12-02 12:06:21,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:06:21,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:21,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:06:21,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:06:21,984 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-12-02 12:06:22,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:22,013 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-12-02 12:06:22,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:06:22,014 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-02 12:06:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:22,028 INFO L225 Difference]: With dead ends: 90 [2020-12-02 12:06:22,028 INFO L226 Difference]: Without dead ends: 74 [2020-12-02 12:06:22,030 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 12:06:22,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-02 12:06:22,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-02 12:06:22,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-02 12:06:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-12-02 12:06:22,091 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-12-02 12:06:22,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:22,092 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-12-02 12:06:22,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:06:22,095 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-12-02 12:06:22,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-02 12:06:22,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:22,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:22,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:06:22,098 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:22,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:22,102 INFO L82 PathProgramCache]: Analyzing trace with hash -2003798512, now seen corresponding path program 1 times [2020-12-02 12:06:22,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:22,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640115022] [2020-12-02 12:06:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:22,276 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 12:06:22,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640115022] [2020-12-02 12:06:22,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:22,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:06:22,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657554015] [2020-12-02 12:06:22,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:06:22,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:22,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:06:22,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:06:22,279 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-12-02 12:06:22,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:22,309 INFO L93 Difference]: Finished difference Result 88 states and 179 transitions. [2020-12-02 12:06:22,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:06:22,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-02 12:06:22,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:22,311 INFO L225 Difference]: With dead ends: 88 [2020-12-02 12:06:22,311 INFO L226 Difference]: Without dead ends: 72 [2020-12-02 12:06:22,312 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 12:06:22,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-02 12:06:22,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-12-02 12:06:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-02 12:06:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-12-02 12:06:22,322 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 7 [2020-12-02 12:06:22,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:22,322 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-12-02 12:06:22,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:06:22,323 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-12-02 12:06:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:06:22,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:22,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:22,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:06:22,324 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:22,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:22,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1988772591, now seen corresponding path program 1 times [2020-12-02 12:06:22,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:22,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122526220] [2020-12-02 12:06:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:22,434 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 12:06:22,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122526220] [2020-12-02 12:06:22,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:22,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:06:22,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483294782] [2020-12-02 12:06:22,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:06:22,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:22,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:06:22,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:06:22,437 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 5 states. [2020-12-02 12:06:22,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:22,538 INFO L93 Difference]: Finished difference Result 123 states and 245 transitions. [2020-12-02 12:06:22,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 12:06:22,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-02 12:06:22,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:22,540 INFO L225 Difference]: With dead ends: 123 [2020-12-02 12:06:22,540 INFO L226 Difference]: Without dead ends: 84 [2020-12-02 12:06:22,541 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 12:06:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-02 12:06:22,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 66. [2020-12-02 12:06:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-02 12:06:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 136 transitions. [2020-12-02 12:06:22,550 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 136 transitions. Word has length 8 [2020-12-02 12:06:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:22,550 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 136 transitions. [2020-12-02 12:06:22,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:06:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 136 transitions. [2020-12-02 12:06:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:06:22,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:22,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:22,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:06:22,552 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:22,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:22,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1988232509, now seen corresponding path program 1 times [2020-12-02 12:06:22,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:22,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653434520] [2020-12-02 12:06:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:22,651 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 12:06:22,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653434520] [2020-12-02 12:06:22,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:22,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:06:22,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371212495] [2020-12-02 12:06:22,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:06:22,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:22,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:06:22,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:06:22,656 INFO L87 Difference]: Start difference. First operand 66 states and 136 transitions. Second operand 5 states. [2020-12-02 12:06:22,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:22,679 INFO L93 Difference]: Finished difference Result 72 states and 140 transitions. [2020-12-02 12:06:22,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:06:22,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-02 12:06:22,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:22,684 INFO L225 Difference]: With dead ends: 72 [2020-12-02 12:06:22,685 INFO L226 Difference]: Without dead ends: 60 [2020-12-02 12:06:22,685 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 12:06:22,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-02 12:06:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-02 12:06:22,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-02 12:06:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 120 transitions. [2020-12-02 12:06:22,704 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 120 transitions. Word has length 8 [2020-12-02 12:06:22,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:22,705 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 120 transitions. [2020-12-02 12:06:22,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:06:22,706 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 120 transitions. [2020-12-02 12:06:22,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:06:22,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:22,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:22,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:06:22,707 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:22,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:22,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1522428958, now seen corresponding path program 1 times [2020-12-02 12:06:22,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:22,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071277399] [2020-12-02 12:06:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:22,827 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 12:06:22,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071277399] [2020-12-02 12:06:22,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:22,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:06:22,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935108000] [2020-12-02 12:06:22,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:06:22,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:22,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:06:22,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:06:22,832 INFO L87 Difference]: Start difference. First operand 60 states and 120 transitions. Second operand 6 states. [2020-12-02 12:06:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:22,875 INFO L93 Difference]: Finished difference Result 75 states and 145 transitions. [2020-12-02 12:06:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:06:22,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-02 12:06:22,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:22,879 INFO L225 Difference]: With dead ends: 75 [2020-12-02 12:06:22,879 INFO L226 Difference]: Without dead ends: 42 [2020-12-02 12:06:22,880 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 12:06:22,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-02 12:06:22,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-02 12:06:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-02 12:06:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-12-02 12:06:22,888 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 9 [2020-12-02 12:06:22,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:22,888 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-12-02 12:06:22,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:06:22,889 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-12-02 12:06:22,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:06:22,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:06:22,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:06:22,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:06:22,890 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:06:22,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:06:22,891 INFO L82 PathProgramCache]: Analyzing trace with hash 567543910, now seen corresponding path program 1 times [2020-12-02 12:06:22,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:06:22,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296624688] [2020-12-02 12:06:22,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:06:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:06:23,001 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 12:06:23,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296624688] [2020-12-02 12:06:23,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:06:23,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:06:23,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138112313] [2020-12-02 12:06:23,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:06:23,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:06:23,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:06:23,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:06:23,004 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 6 states. [2020-12-02 12:06:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:06:23,038 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2020-12-02 12:06:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:06:23,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-02 12:06:23,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:06:23,039 INFO L225 Difference]: With dead ends: 36 [2020-12-02 12:06:23,039 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:06:23,040 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 12:06:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:06:23,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:06:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:06:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:06:23,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-12-02 12:06:23,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:06:23,041 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:06:23,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:06:23,041 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:06:23,041 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:06:23,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:06:23,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:06:23 BasicIcfg [2020-12-02 12:06:23,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:06:23,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:06:23,046 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:06:23,046 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:06:23,046 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:06:18" (3/4) ... [2020-12-02 12:06:23,050 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:06:23,059 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:06:23,060 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:06:23,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-02 12:06:23,068 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:06:23,068 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:06:23,068 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:06:23,145 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:06:23,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:06:23,147 INFO L168 Benchmark]: Toolchain (without parser) took 6107.49 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 24.7 MB in the beginning and 39.1 MB in the end (delta: -14.5 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:23,150 INFO L168 Benchmark]: CDTParser took 0.36 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: 24.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:06:23,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.89 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.4 MB in the beginning and 38.0 MB in the end (delta: -13.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:23,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.23 ms. Allocated memory is still 58.7 MB. Free memory was 38.0 MB in the beginning and 36.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:06:23,154 INFO L168 Benchmark]: Boogie Preprocessor took 32.04 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 35.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:23,155 INFO L168 Benchmark]: RCFGBuilder took 660.70 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 28.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:23,158 INFO L168 Benchmark]: TraceAbstraction took 4545.26 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 28.3 MB in the beginning and 42.2 MB in the end (delta: -13.8 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:23,159 INFO L168 Benchmark]: Witness Printer took 99.39 ms. Allocated memory is still 104.9 MB. Free memory was 42.2 MB in the beginning and 39.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:06:23,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 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: 24.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 703.89 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.4 MB in the beginning and 38.0 MB in the end (delta: -13.6 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.23 ms. Allocated memory is still 58.7 MB. Free memory was 38.0 MB in the beginning and 36.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.04 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 35.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 660.70 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 28.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4545.26 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 28.3 MB in the beginning and 42.2 MB in the end (delta: -13.8 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. * Witness Printer took 99.39 ms. Allocated memory is still 104.9 MB. Free memory was 42.2 MB in the beginning and 39.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 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: 0.2s, 54 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.0s, 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: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, 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, 0.1s 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...