./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe023_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/safe023_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 d3cc59967c9878975720f1b2e67b62ec3484487d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:10:41,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:10:41,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:10:41,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:10:41,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:10:41,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:10:41,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:10:41,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:10:41,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:10:41,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:10:41,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:10:41,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:10:41,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:10:41,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:10:41,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:10:41,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:10:41,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:10:41,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:10:41,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:10:41,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:10:41,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:10:41,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:10:41,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:10:41,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:10:41,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:10:41,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:10:41,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:10:41,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:10:41,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:10:41,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:10:41,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:10:41,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:10:41,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:10:41,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:10:41,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:10:41,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:10:41,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:10:41,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:10:41,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:10:41,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:10:41,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:10:41,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:10:41,610 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:10:41,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:10:41,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:10:41,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:10:41,614 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:10:41,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:10:41,615 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:10:41,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:10:41,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:10:41,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:10:41,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:10:41,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:10:41,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:10:41,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:10:41,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:10:41,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:10:41,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:10:41,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:10:41,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:10:41,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:10:41,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:10:41,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:10:41,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:10:41,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:10:41,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:10:41,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:10:41,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:10:41,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:10:41,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:10:41,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3cc59967c9878975720f1b2e67b62ec3484487d [2020-12-02 12:10:42,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:10:42,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:10:42,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:10:42,091 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:10:42,093 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:10:42,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i [2020-12-02 12:10:42,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a81077d0a/5c8849f81d0546b1b382aeccc61a1c9b/FLAGbeb4b71d6 [2020-12-02 12:10:42,936 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:10:42,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe023_tso.opt.i [2020-12-02 12:10:42,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a81077d0a/5c8849f81d0546b1b382aeccc61a1c9b/FLAGbeb4b71d6 [2020-12-02 12:10:43,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a81077d0a/5c8849f81d0546b1b382aeccc61a1c9b [2020-12-02 12:10:43,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:10:43,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:10:43,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:10:43,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:10:43,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:10:43,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:10:43" (1/1) ... [2020-12-02 12:10:43,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fe7b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43, skipping insertion in model container [2020-12-02 12:10:43,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:10:43" (1/1) ... [2020-12-02 12:10:43,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:10:43,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:10:43,551 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/safe023_tso.opt.i[949,962] [2020-12-02 12:10:43,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:10:43,777 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:10:43,794 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/safe023_tso.opt.i[949,962] [2020-12-02 12:10:43,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:10:43,935 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:10:43,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43 WrapperNode [2020-12-02 12:10:43,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:10:43,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:10:43,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:10:43,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:10:43,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43" (1/1) ... [2020-12-02 12:10:43,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43" (1/1) ... [2020-12-02 12:10:43,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:10:43,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:10:43,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:10:43,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:10:44,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43" (1/1) ... [2020-12-02 12:10:44,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43" (1/1) ... [2020-12-02 12:10:44,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43" (1/1) ... [2020-12-02 12:10:44,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43" (1/1) ... [2020-12-02 12:10:44,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43" (1/1) ... [2020-12-02 12:10:44,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43" (1/1) ... [2020-12-02 12:10:44,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43" (1/1) ... [2020-12-02 12:10:44,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:10:44,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:10:44,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:10:44,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:10:44,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43" (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 12:10:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:10:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:10:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:10:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:10:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:10:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:10:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:10:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:10:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:10:44,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:10:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:10:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:10:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:10:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:10:44,126 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 12:10:44,549 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:10:44,549 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:10:44,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:10:44 BoogieIcfgContainer [2020-12-02 12:10:44,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:10:44,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:10:44,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:10:44,558 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:10:44,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:10:43" (1/3) ... [2020-12-02 12:10:44,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d380951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:10:44, skipping insertion in model container [2020-12-02 12:10:44,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:10:43" (2/3) ... [2020-12-02 12:10:44,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d380951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:10:44, skipping insertion in model container [2020-12-02 12:10:44,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:10:44" (3/3) ... [2020-12-02 12:10:44,564 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-12-02 12:10:44,583 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:10:44,583 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:10:44,587 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:10:44,589 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:10:44,629 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,630 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,630 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,630 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,631 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,631 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,633 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,633 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,634 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,634 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,635 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,635 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,636 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,636 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,637 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,637 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,637 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,638 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,638 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,638 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,639 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,640 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,640 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,640 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,641 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,641 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,642 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,642 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,642 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,643 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,652 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,653 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,653 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,654 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,660 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,660 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,660 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,663 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,664 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,664 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,664 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:10:44,667 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:10:44,682 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:10:44,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:10:44,707 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:10:44,708 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:10:44,708 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:10:44,708 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:10:44,708 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:10:44,708 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:10:44,709 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:10:44,723 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:10:44,726 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:10:44,729 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-02 12:10:44,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-02 12:10:44,782 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-02 12:10:44,782 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:10:44,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:10:44,790 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:10:47,293 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-02 12:10:47,514 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-02 12:10:48,540 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-02 12:10:48,645 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-02 12:10:48,869 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-02 12:10:49,031 INFO L131 LiptonReduction]: Checked pairs total: 2371 [2020-12-02 12:10:49,031 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-12-02 12:10:49,039 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-02 12:10:49,068 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-02 12:10:49,071 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-02 12:10:49,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:10:49,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:49,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:49,080 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1684989787, now seen corresponding path program 1 times [2020-12-02 12:10:49,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:49,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465761003] [2020-12-02 12:10:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:49,409 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 12:10:49,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465761003] [2020-12-02 12:10:49,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:49,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-02 12:10:49,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247096681] [2020-12-02 12:10:49,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 12:10:49,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:49,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 12:10:49,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:10:49,451 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-12-02 12:10:49,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:49,539 INFO L93 Difference]: Finished difference Result 499 states and 1376 transitions. [2020-12-02 12:10:49,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 12:10:49,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-02 12:10:49,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:49,572 INFO L225 Difference]: With dead ends: 499 [2020-12-02 12:10:49,572 INFO L226 Difference]: Without dead ends: 317 [2020-12-02 12:10:49,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 12:10:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-12-02 12:10:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 272. [2020-12-02 12:10:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-12-02 12:10:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 685 transitions. [2020-12-02 12:10:49,714 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 685 transitions. Word has length 8 [2020-12-02 12:10:49,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:49,715 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 685 transitions. [2020-12-02 12:10:49,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 12:10:49,715 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 685 transitions. [2020-12-02 12:10:49,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:10:49,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:49,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:49,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:10:49,718 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:49,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:49,722 INFO L82 PathProgramCache]: Analyzing trace with hash 695087089, now seen corresponding path program 1 times [2020-12-02 12:10:49,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:49,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65028811] [2020-12-02 12:10:49,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:49,912 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 12:10:49,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65028811] [2020-12-02 12:10:49,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:49,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:10:49,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956806783] [2020-12-02 12:10:49,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:10:49,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:49,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:10:49,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:49,918 INFO L87 Difference]: Start difference. First operand 272 states and 685 transitions. Second operand 4 states. [2020-12-02 12:10:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:49,946 INFO L93 Difference]: Finished difference Result 254 states and 605 transitions. [2020-12-02 12:10:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:10:49,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:10:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:49,949 INFO L225 Difference]: With dead ends: 254 [2020-12-02 12:10:49,949 INFO L226 Difference]: Without dead ends: 218 [2020-12-02 12:10:49,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-02 12:10:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 192. [2020-12-02 12:10:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-12-02 12:10:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 465 transitions. [2020-12-02 12:10:49,963 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 465 transitions. Word has length 9 [2020-12-02 12:10:49,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:49,963 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 465 transitions. [2020-12-02 12:10:49,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:10:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 465 transitions. [2020-12-02 12:10:49,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:10:49,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:49,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:49,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:10:49,966 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:49,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:49,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2042757351, now seen corresponding path program 1 times [2020-12-02 12:10:49,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:49,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336946916] [2020-12-02 12:10:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:50,092 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 12:10:50,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336946916] [2020-12-02 12:10:50,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:50,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:10:50,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530463059] [2020-12-02 12:10:50,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:10:50,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:50,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:10:50,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:50,099 INFO L87 Difference]: Start difference. First operand 192 states and 465 transitions. Second operand 4 states. [2020-12-02 12:10:50,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:50,130 INFO L93 Difference]: Finished difference Result 246 states and 577 transitions. [2020-12-02 12:10:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:10:50,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:10:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:50,132 INFO L225 Difference]: With dead ends: 246 [2020-12-02 12:10:50,133 INFO L226 Difference]: Without dead ends: 186 [2020-12-02 12:10:50,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:50,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-12-02 12:10:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 170. [2020-12-02 12:10:50,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-12-02 12:10:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 405 transitions. [2020-12-02 12:10:50,157 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 405 transitions. Word has length 11 [2020-12-02 12:10:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:50,157 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 405 transitions. [2020-12-02 12:10:50,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:10:50,157 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 405 transitions. [2020-12-02 12:10:50,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 12:10:50,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:50,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:50,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:10:50,164 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:50,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:50,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2042769348, now seen corresponding path program 1 times [2020-12-02 12:10:50,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:50,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127831286] [2020-12-02 12:10:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:50,301 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 12:10:50,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127831286] [2020-12-02 12:10:50,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:50,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:10:50,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848386551] [2020-12-02 12:10:50,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:10:50,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:50,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:10:50,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:50,306 INFO L87 Difference]: Start difference. First operand 170 states and 405 transitions. Second operand 4 states. [2020-12-02 12:10:50,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:50,335 INFO L93 Difference]: Finished difference Result 182 states and 423 transitions. [2020-12-02 12:10:50,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:10:50,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-02 12:10:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:50,339 INFO L225 Difference]: With dead ends: 182 [2020-12-02 12:10:50,339 INFO L226 Difference]: Without dead ends: 182 [2020-12-02 12:10:50,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-12-02 12:10:50,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 140. [2020-12-02 12:10:50,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-02 12:10:50,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 328 transitions. [2020-12-02 12:10:50,354 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 328 transitions. Word has length 11 [2020-12-02 12:10:50,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:50,354 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 328 transitions. [2020-12-02 12:10:50,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:10:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 328 transitions. [2020-12-02 12:10:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:10:50,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:50,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:50,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:10:50,364 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:50,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:50,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1140142386, now seen corresponding path program 1 times [2020-12-02 12:10:50,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:50,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595051821] [2020-12-02 12:10:50,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:50,482 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 12:10:50,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595051821] [2020-12-02 12:10:50,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:50,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:10:50,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278146992] [2020-12-02 12:10:50,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:10:50,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:50,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:10:50,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:10:50,487 INFO L87 Difference]: Start difference. First operand 140 states and 328 transitions. Second operand 5 states. [2020-12-02 12:10:50,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:50,513 INFO L93 Difference]: Finished difference Result 142 states and 313 transitions. [2020-12-02 12:10:50,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:10:50,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:10:50,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:50,515 INFO L225 Difference]: With dead ends: 142 [2020-12-02 12:10:50,515 INFO L226 Difference]: Without dead ends: 82 [2020-12-02 12:10:50,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:10:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-02 12:10:50,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-12-02 12:10:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-02 12:10:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 171 transitions. [2020-12-02 12:10:50,519 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 171 transitions. Word has length 12 [2020-12-02 12:10:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:50,519 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 171 transitions. [2020-12-02 12:10:50,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:10:50,520 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 171 transitions. [2020-12-02 12:10:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:10:50,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:50,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:50,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:10:50,521 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:50,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:50,521 INFO L82 PathProgramCache]: Analyzing trace with hash -301354668, now seen corresponding path program 1 times [2020-12-02 12:10:50,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:50,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955391269] [2020-12-02 12:10:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:50,574 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 12:10:50,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955391269] [2020-12-02 12:10:50,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:50,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:10:50,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191461304] [2020-12-02 12:10:50,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:10:50,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:50,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:10:50,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:10:50,577 INFO L87 Difference]: Start difference. First operand 82 states and 171 transitions. Second operand 4 states. [2020-12-02 12:10:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:50,599 INFO L93 Difference]: Finished difference Result 88 states and 172 transitions. [2020-12-02 12:10:50,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 12:10:50,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:10:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:50,601 INFO L225 Difference]: With dead ends: 88 [2020-12-02 12:10:50,601 INFO L226 Difference]: Without dead ends: 71 [2020-12-02 12:10:50,601 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 12:10:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-02 12:10:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-12-02 12:10:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-02 12:10:50,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 138 transitions. [2020-12-02 12:10:50,604 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 138 transitions. Word has length 13 [2020-12-02 12:10:50,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:50,605 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 138 transitions. [2020-12-02 12:10:50,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:10:50,605 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 138 transitions. [2020-12-02 12:10:50,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:10:50,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:50,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:50,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:10:50,606 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:50,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:50,607 INFO L82 PathProgramCache]: Analyzing trace with hash 150538107, now seen corresponding path program 1 times [2020-12-02 12:10:50,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:50,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674151074] [2020-12-02 12:10:50,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:50,669 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 12:10:50,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674151074] [2020-12-02 12:10:50,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:50,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:10:50,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714587734] [2020-12-02 12:10:50,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:10:50,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:50,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:10:50,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:10:50,673 INFO L87 Difference]: Start difference. First operand 71 states and 138 transitions. Second operand 5 states. [2020-12-02 12:10:50,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:50,718 INFO L93 Difference]: Finished difference Result 67 states and 127 transitions. [2020-12-02 12:10:50,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:10:50,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:10:50,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:50,720 INFO L225 Difference]: With dead ends: 67 [2020-12-02 12:10:50,721 INFO L226 Difference]: Without dead ends: 58 [2020-12-02 12:10:50,721 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 12:10:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-02 12:10:50,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-12-02 12:10:50,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-02 12:10:50,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 110 transitions. [2020-12-02 12:10:50,724 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 110 transitions. Word has length 14 [2020-12-02 12:10:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:50,724 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 110 transitions. [2020-12-02 12:10:50,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:10:50,725 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 110 transitions. [2020-12-02 12:10:50,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 12:10:50,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:10:50,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:10:50,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:10:50,726 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:10:50,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:10:50,727 INFO L82 PathProgramCache]: Analyzing trace with hash 791467962, now seen corresponding path program 1 times [2020-12-02 12:10:50,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:10:50,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55681744] [2020-12-02 12:10:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:10:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:10:50,839 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 12:10:50,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55681744] [2020-12-02 12:10:50,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:10:50,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:10:50,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460375383] [2020-12-02 12:10:50,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:10:50,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:10:50,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:10:50,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:10:50,844 INFO L87 Difference]: Start difference. First operand 58 states and 110 transitions. Second operand 6 states. [2020-12-02 12:10:50,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:10:50,885 INFO L93 Difference]: Finished difference Result 55 states and 107 transitions. [2020-12-02 12:10:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:10:50,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-02 12:10:50,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:10:50,887 INFO L225 Difference]: With dead ends: 55 [2020-12-02 12:10:50,887 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:10:50,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-02 12:10:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:10:50,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:10:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:10:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:10:50,889 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-02 12:10:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:10:50,889 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:10:50,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:10:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:10:50,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:10:50,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:10:50,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:10:50 BasicIcfg [2020-12-02 12:10:50,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:10:50,894 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:10:50,895 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:10:50,895 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:10:50,895 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:10:44" (3/4) ... [2020-12-02 12:10:50,899 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:10:50,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:10:50,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:10:50,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:10:50,913 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:10:50,913 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:10:50,913 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:10:50,913 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:10:50,960 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:10:50,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:10:50,962 INFO L168 Benchmark]: Toolchain (without parser) took 7710.80 ms. Allocated memory was 48.2 MB in the beginning and 125.8 MB in the end (delta: 77.6 MB). Free memory was 24.5 MB in the beginning and 50.4 MB in the end (delta: -25.9 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. [2020-12-02 12:10:50,963 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 37.7 MB. Free memory was 20.0 MB in the beginning and 19.9 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:10:50,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.71 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 37.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-12-02 12:10:50,968 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.63 ms. Allocated memory is still 58.7 MB. Free memory was 37.7 MB in the beginning and 35.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:10:50,969 INFO L168 Benchmark]: Boogie Preprocessor took 32.64 ms. Allocated memory is still 58.7 MB. Free memory was 35.7 MB in the beginning and 34.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:10:50,969 INFO L168 Benchmark]: RCFGBuilder took 525.14 ms. Allocated memory is still 58.7 MB. Free memory was 34.2 MB in the beginning and 25.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-12-02 12:10:50,972 INFO L168 Benchmark]: TraceAbstraction took 6339.90 ms. Allocated memory was 58.7 MB in the beginning and 125.8 MB in the end (delta: 67.1 MB). Free memory was 25.5 MB in the beginning and 52.5 MB in the end (delta: -26.9 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2020-12-02 12:10:50,972 INFO L168 Benchmark]: Witness Printer took 66.20 ms. Allocated memory is still 125.8 MB. Free memory was 52.5 MB in the beginning and 50.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:10:50,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 37.7 MB. Free memory was 20.0 MB in the beginning and 19.9 MB in the end (delta: 42.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 680.71 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 37.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.63 ms. Allocated memory is still 58.7 MB. Free memory was 37.7 MB in the beginning and 35.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.64 ms. Allocated memory is still 58.7 MB. Free memory was 35.7 MB in the beginning and 34.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 525.14 ms. Allocated memory is still 58.7 MB. Free memory was 34.2 MB in the beginning and 25.9 MB in the end (delta: 8.3 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6339.90 ms. Allocated memory was 58.7 MB in the beginning and 125.8 MB in the end (delta: 67.1 MB). Free memory was 25.5 MB in the beginning and 52.5 MB in the end (delta: -26.9 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * Witness Printer took 66.20 ms. Allocated memory is still 125.8 MB. Free memory was 52.5 MB in the beginning and 50.4 MB in the end (delta: 2.1 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 850 VarBasedMoverChecksPositive, 46 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 83 PlacesBefore, 31 PlacesAfterwards, 75 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 2371 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 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 133 SDtfs, 183 SDslu, 132 SDs, 0 SdLazy, 70 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 129 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 4234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...