./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe029_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/safe029_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 f04994a7f7b8271614d7fad10c4ab264713e8e55 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:12:06,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:12:06,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:12:06,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:12:06,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:12:06,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:12:06,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:12:06,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:12:06,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:12:06,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:12:06,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:12:06,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:12:06,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:12:06,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:12:06,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:12:06,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:12:06,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:12:06,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:12:06,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:12:06,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:12:06,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:12:06,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:12:06,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:12:06,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:12:06,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:12:06,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:12:06,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:12:06,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:12:06,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:12:06,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:12:06,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:12:06,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:12:06,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:12:06,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:12:06,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:12:06,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:12:06,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:12:06,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:12:06,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:12:06,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:12:06,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:12:06,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:12:06,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:12:06,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:12:06,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:12:06,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:12:06,757 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:12:06,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:12:06,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:12:06,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:12:06,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:12:06,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:12:06,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:12:06,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:12:06,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:12:06,761 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:12:06,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:12:06,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:12:06,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:12:06,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:12:06,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:12:06,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:12:06,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:12:06,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:12:06,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:12:06,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:12:06,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:12:06,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:12:06,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:12:06,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:12:06,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:12:06,766 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f04994a7f7b8271614d7fad10c4ab264713e8e55 [2020-12-02 12:12:07,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:12:07,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:12:07,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:12:07,244 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:12:07,245 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:12:07,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe029_tso.opt.i [2020-12-02 12:12:07,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30fd6e7bc/2d78ae8164b845ebae405781d45e8145/FLAGe3e4d40b9 [2020-12-02 12:12:08,159 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:12:08,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe029_tso.opt.i [2020-12-02 12:12:08,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30fd6e7bc/2d78ae8164b845ebae405781d45e8145/FLAGe3e4d40b9 [2020-12-02 12:12:08,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30fd6e7bc/2d78ae8164b845ebae405781d45e8145 [2020-12-02 12:12:08,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:12:08,365 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:12:08,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:12:08,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:12:08,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:12:08,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:12:08" (1/1) ... [2020-12-02 12:12:08,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a07e50a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:08, skipping insertion in model container [2020-12-02 12:12:08,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:12:08" (1/1) ... [2020-12-02 12:12:08,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:12:08,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:12:08,742 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/safe029_tso.opt.i[949,962] [2020-12-02 12:12:08,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:12:09,002 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:12:09,019 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/safe029_tso.opt.i[949,962] [2020-12-02 12:12:09,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:12:09,201 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:12:09,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:09 WrapperNode [2020-12-02 12:12:09,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:12:09,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:12:09,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:12:09,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:12:09,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:09" (1/1) ... [2020-12-02 12:12:09,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:09" (1/1) ... [2020-12-02 12:12:09,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:12:09,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:12:09,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:12:09,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:12:09,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:09" (1/1) ... [2020-12-02 12:12:09,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:09" (1/1) ... [2020-12-02 12:12:09,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:09" (1/1) ... [2020-12-02 12:12:09,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:09" (1/1) ... [2020-12-02 12:12:09,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:09" (1/1) ... [2020-12-02 12:12:09,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:09" (1/1) ... [2020-12-02 12:12:09,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:09" (1/1) ... [2020-12-02 12:12:09,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:12:09,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:12:09,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:12:09,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:12:09,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:09" (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 12:12:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:12:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:12:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:12:09,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:12:09,419 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:12:09,419 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:12:09,419 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:12:09,420 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:12:09,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:12:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:12:09,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:12:09,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:12:09,423 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 12:12:09,857 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:12:09,857 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:12:09,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:09 BoogieIcfgContainer [2020-12-02 12:12:09,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:12:09,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:12:09,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:12:09,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:12:09,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:12:08" (1/3) ... [2020-12-02 12:12:09,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311d2cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:12:09, skipping insertion in model container [2020-12-02 12:12:09,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:09" (2/3) ... [2020-12-02 12:12:09,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311d2cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:12:09, skipping insertion in model container [2020-12-02 12:12:09,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:09" (3/3) ... [2020-12-02 12:12:09,876 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2020-12-02 12:12:09,892 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:12:09,893 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:12:09,897 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:12:09,898 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:12:09,924 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,925 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,925 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,926 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,926 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,926 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,927 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,927 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,927 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,928 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,928 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,928 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,929 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,929 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,929 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,930 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,930 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,930 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,931 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,931 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,931 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,931 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,934 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,934 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,935 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,935 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,940 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,940 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,941 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,941 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:09,942 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:12:09,956 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-02 12:12:09,979 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:12:09,979 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:12:09,979 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:12:09,979 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:12:09,980 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:12:09,980 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:12:09,980 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:12:09,980 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:12:09,993 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:12:09,995 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 59 transitions, 128 flow [2020-12-02 12:12:09,999 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 59 transitions, 128 flow [2020-12-02 12:12:10,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 59 transitions, 128 flow [2020-12-02 12:12:10,045 INFO L129 PetriNetUnfolder]: 2/57 cut-off events. [2020-12-02 12:12:10,046 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:12:10,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 57 events. 2/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2020-12-02 12:12:10,056 INFO L116 LiptonReduction]: Number of co-enabled transitions 696 [2020-12-02 12:12:11,747 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-02 12:12:12,274 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-12-02 12:12:12,570 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-12-02 12:12:12,755 INFO L131 LiptonReduction]: Checked pairs total: 1340 [2020-12-02 12:12:12,755 INFO L133 LiptonReduction]: Total number of compositions: 53 [2020-12-02 12:12:12,762 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-12-02 12:12:12,776 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-12-02 12:12:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-12-02 12:12:12,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 12:12:12,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:12,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 12:12:12,786 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:12,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:12,792 INFO L82 PathProgramCache]: Analyzing trace with hash -2070123945, now seen corresponding path program 1 times [2020-12-02 12:12:12,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:12,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341684019] [2020-12-02 12:12:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:12,976 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 12:12:12,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341684019] [2020-12-02 12:12:12,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:12,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:12:12,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133145417] [2020-12-02 12:12:12,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:12:12,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:13,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:12:13,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:12:13,015 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-12-02 12:12:13,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:13,045 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-12-02 12:12:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:12:13,047 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-02 12:12:13,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:13,061 INFO L225 Difference]: With dead ends: 90 [2020-12-02 12:12:13,061 INFO L226 Difference]: Without dead ends: 74 [2020-12-02 12:12:13,063 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 12:12:13,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-02 12:12:13,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-02 12:12:13,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-02 12:12:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-12-02 12:12:13,114 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-12-02 12:12:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:13,114 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-12-02 12:12:13,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:12:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-12-02 12:12:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-02 12:12:13,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:13,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:13,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:12:13,116 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:13,117 INFO L82 PathProgramCache]: Analyzing trace with hash 250664680, now seen corresponding path program 1 times [2020-12-02 12:12:13,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:13,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945424295] [2020-12-02 12:12:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:13,300 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 12:12:13,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945424295] [2020-12-02 12:12:13,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:13,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:12:13,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381574563] [2020-12-02 12:12:13,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:12:13,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:13,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:12:13,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:12:13,311 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-12-02 12:12:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:13,355 INFO L93 Difference]: Finished difference Result 108 states and 221 transitions. [2020-12-02 12:12:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:12:13,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-02 12:12:13,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:13,361 INFO L225 Difference]: With dead ends: 108 [2020-12-02 12:12:13,362 INFO L226 Difference]: Without dead ends: 72 [2020-12-02 12:12:13,363 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 12:12:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-02 12:12:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-12-02 12:12:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-02 12:12:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 122 transitions. [2020-12-02 12:12:13,374 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 122 transitions. Word has length 7 [2020-12-02 12:12:13,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:13,375 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 122 transitions. [2020-12-02 12:12:13,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:12:13,375 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 122 transitions. [2020-12-02 12:12:13,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:12:13,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:13,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:13,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:12:13,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:13,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:13,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1104300190, now seen corresponding path program 1 times [2020-12-02 12:12:13,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:13,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487829541] [2020-12-02 12:12:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:13,501 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 12:12:13,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487829541] [2020-12-02 12:12:13,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:13,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:13,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702649962] [2020-12-02 12:12:13,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:13,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:13,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:13,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:13,504 INFO L87 Difference]: Start difference. First operand 64 states and 122 transitions. Second operand 5 states. [2020-12-02 12:12:13,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:13,558 INFO L93 Difference]: Finished difference Result 80 states and 145 transitions. [2020-12-02 12:12:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:12:13,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-02 12:12:13,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:13,559 INFO L225 Difference]: With dead ends: 80 [2020-12-02 12:12:13,559 INFO L226 Difference]: Without dead ends: 66 [2020-12-02 12:12:13,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:12:13,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-02 12:12:13,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-12-02 12:12:13,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-02 12:12:13,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 108 transitions. [2020-12-02 12:12:13,568 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 108 transitions. Word has length 8 [2020-12-02 12:12:13,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:13,568 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 108 transitions. [2020-12-02 12:12:13,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:13,569 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 108 transitions. [2020-12-02 12:12:13,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:12:13,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:13,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:13,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:12:13,570 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:13,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:13,571 INFO L82 PathProgramCache]: Analyzing trace with hash -820302587, now seen corresponding path program 1 times [2020-12-02 12:12:13,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:13,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989516890] [2020-12-02 12:12:13,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:13,633 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 12:12:13,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989516890] [2020-12-02 12:12:13,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:13,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:12:13,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088699205] [2020-12-02 12:12:13,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:12:13,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:13,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:12:13,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:12:13,636 INFO L87 Difference]: Start difference. First operand 58 states and 108 transitions. Second operand 4 states. [2020-12-02 12:12:13,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:13,655 INFO L93 Difference]: Finished difference Result 64 states and 112 transitions. [2020-12-02 12:12:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:12:13,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-02 12:12:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:13,657 INFO L225 Difference]: With dead ends: 64 [2020-12-02 12:12:13,657 INFO L226 Difference]: Without dead ends: 52 [2020-12-02 12:12:13,657 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 12:12:13,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-02 12:12:13,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-02 12:12:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-02 12:12:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 94 transitions. [2020-12-02 12:12:13,668 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 94 transitions. Word has length 8 [2020-12-02 12:12:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:13,668 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 94 transitions. [2020-12-02 12:12:13,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:12:13,669 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 94 transitions. [2020-12-02 12:12:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:12:13,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:13,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:13,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:12:13,670 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:13,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:13,671 INFO L82 PathProgramCache]: Analyzing trace with hash 125459403, now seen corresponding path program 1 times [2020-12-02 12:12:13,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:13,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293547889] [2020-12-02 12:12:13,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:13,760 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 12:12:13,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293547889] [2020-12-02 12:12:13,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:13,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:12:13,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696861337] [2020-12-02 12:12:13,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:12:13,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:13,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:12:13,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:12:13,770 INFO L87 Difference]: Start difference. First operand 52 states and 94 transitions. Second operand 4 states. [2020-12-02 12:12:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:13,806 INFO L93 Difference]: Finished difference Result 48 states and 73 transitions. [2020-12-02 12:12:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:12:13,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:12:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:13,814 INFO L225 Difference]: With dead ends: 48 [2020-12-02 12:12:13,814 INFO L226 Difference]: Without dead ends: 35 [2020-12-02 12:12:13,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 12:12:13,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-02 12:12:13,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-02 12:12:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 12:12:13,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2020-12-02 12:12:13,825 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 49 transitions. Word has length 9 [2020-12-02 12:12:13,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:13,825 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 49 transitions. [2020-12-02 12:12:13,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:12:13,826 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 49 transitions. [2020-12-02 12:12:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:12:13,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:13,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:13,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:12:13,830 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:13,830 INFO L82 PathProgramCache]: Analyzing trace with hash 515064884, now seen corresponding path program 1 times [2020-12-02 12:12:13,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:13,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913375685] [2020-12-02 12:12:13,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:13,938 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 12:12:13,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913375685] [2020-12-02 12:12:13,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:13,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:12:13,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041650027] [2020-12-02 12:12:13,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:12:13,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:13,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:12:13,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:12:13,943 INFO L87 Difference]: Start difference. First operand 35 states and 49 transitions. Second operand 5 states. [2020-12-02 12:12:13,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:13,968 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2020-12-02 12:12:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:12:13,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-02 12:12:13,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:13,968 INFO L225 Difference]: With dead ends: 25 [2020-12-02 12:12:13,968 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:12:13,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:12:13,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:12:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:12:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:12:13,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:12:13,970 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-02 12:12:13,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:13,971 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:12:13,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:12:13,971 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:12:13,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:12:13,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:12:13,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:12:13 BasicIcfg [2020-12-02 12:12:13,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:12:13,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:12:13,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:12:13,976 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:12:13,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:09" (3/4) ... [2020-12-02 12:12:13,981 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:12:13,989 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:12:13,989 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:12:13,996 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-02 12:12:13,997 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:12:13,997 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:12:13,997 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:12:14,049 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:12:14,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:12:14,051 INFO L168 Benchmark]: Toolchain (without parser) took 5686.14 ms. Allocated memory was 46.1 MB in the beginning and 100.7 MB in the end (delta: 54.5 MB). Free memory was 21.3 MB in the beginning and 79.4 MB in the end (delta: -58.1 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:14,052 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 46.1 MB. Free memory is still 25.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:12:14,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 833.00 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.1 MB in the beginning and 26.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:14,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.64 ms. Allocated memory is still 56.6 MB. Free memory was 26.6 MB in the beginning and 24.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:12:14,054 INFO L168 Benchmark]: Boogie Preprocessor took 27.46 ms. Allocated memory is still 56.6 MB. Free memory was 24.8 MB in the beginning and 23.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:14,055 INFO L168 Benchmark]: RCFGBuilder took 582.29 ms. Allocated memory is still 56.6 MB. Free memory was 23.3 MB in the beginning and 22.3 MB in the end (delta: 990.4 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:14,056 INFO L168 Benchmark]: TraceAbstraction took 4113.75 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 22.0 MB in the beginning and 35.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:14,056 INFO L168 Benchmark]: Witness Printer took 73.55 ms. Allocated memory is still 100.7 MB. Free memory was 35.4 MB in the beginning and 79.4 MB in the end (delta: -44.0 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-12-02 12:12:14,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 46.1 MB. Free memory is still 25.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 833.00 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.1 MB in the beginning and 26.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.64 ms. Allocated memory is still 56.6 MB. Free memory was 26.6 MB in the beginning and 24.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.46 ms. Allocated memory is still 56.6 MB. Free memory was 24.8 MB in the beginning and 23.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 582.29 ms. Allocated memory is still 56.6 MB. Free memory was 23.3 MB in the beginning and 22.3 MB in the end (delta: 990.4 kB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4113.75 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 22.0 MB in the beginning and 35.4 MB in the end (delta: -13.4 MB). Peak memory consumption was 31.7 MB. Max. memory is 16.1 GB. * Witness Printer took 73.55 ms. Allocated memory is still 100.7 MB. Free memory was 35.4 MB in the beginning and 79.4 MB in the end (delta: -44.0 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 455 VarBasedMoverChecksPositive, 25 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 22 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 45 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 64 PlacesBefore, 23 PlacesAfterwards, 59 TransitionsBefore, 17 TransitionsAfterwards, 696 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 53 TotalNumberOfCompositions, 1340 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, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 98 SDtfs, 59 SDslu, 109 SDs, 0 SdLazy, 53 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 1391 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...