./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe032_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 96f16385 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe032_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e5de3ef47c4c349f533a483c0af709037486bd9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 12:12:52,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 12:12:52,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 12:12:52,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 12:12:52,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 12:12:52,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 12:12:52,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 12:12:52,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 12:12:52,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 12:12:52,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 12:12:52,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 12:12:52,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 12:12:52,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 12:12:52,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 12:12:52,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 12:12:52,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 12:12:52,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 12:12:52,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 12:12:52,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 12:12:52,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 12:12:52,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 12:12:52,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 12:12:52,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 12:12:52,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 12:12:52,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 12:12:52,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 12:12:52,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 12:12:52,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 12:12:52,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 12:12:52,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 12:12:52,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 12:12:52,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 12:12:52,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 12:12:52,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 12:12:52,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 12:12:52,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 12:12:52,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 12:12:52,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 12:12:52,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 12:12:52,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 12:12:52,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 12:12:52,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 12:12:52,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 12:12:52,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 12:12:52,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 12:12:52,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 12:12:52,657 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 12:12:52,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 12:12:52,658 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 12:12:52,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 12:12:52,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 12:12:52,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 12:12:52,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 12:12:52,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 12:12:52,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 12:12:52,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 12:12:52,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 12:12:52,662 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 12:12:52,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 12:12:52,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 12:12:52,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 12:12:52,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 12:12:52,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 12:12:52,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 12:12:52,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 12:12:52,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 12:12:52,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 12:12:52,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 12:12:52,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 12:12:52,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 12:12:52,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 12:12:52,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e5de3ef47c4c349f533a483c0af709037486bd9 [2020-12-02 12:12:53,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 12:12:53,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 12:12:53,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 12:12:53,165 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 12:12:53,166 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 12:12:53,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe032_tso.oepc.i [2020-12-02 12:12:53,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63f3637b/14a30c9e160242fabc456b2c93716e6d/FLAG497f2c2c2 [2020-12-02 12:12:54,013 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 12:12:54,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe032_tso.oepc.i [2020-12-02 12:12:54,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63f3637b/14a30c9e160242fabc456b2c93716e6d/FLAG497f2c2c2 [2020-12-02 12:12:54,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a63f3637b/14a30c9e160242fabc456b2c93716e6d [2020-12-02 12:12:54,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 12:12:54,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 12:12:54,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 12:12:54,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 12:12:54,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 12:12:54,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:12:54" (1/1) ... [2020-12-02 12:12:54,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7407df79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:54, skipping insertion in model container [2020-12-02 12:12:54,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:12:54" (1/1) ... [2020-12-02 12:12:54,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 12:12:54,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 12:12:54,753 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/safe032_tso.oepc.i[950,963] [2020-12-02 12:12:54,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:12:54,981 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 12:12:54,996 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/safe032_tso.oepc.i[950,963] [2020-12-02 12:12:55,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 12:12:55,146 INFO L208 MainTranslator]: Completed translation [2020-12-02 12:12:55,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:55 WrapperNode [2020-12-02 12:12:55,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 12:12:55,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 12:12:55,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 12:12:55,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 12:12:55,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:55" (1/1) ... [2020-12-02 12:12:55,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:55" (1/1) ... [2020-12-02 12:12:55,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 12:12:55,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 12:12:55,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 12:12:55,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 12:12:55,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:55" (1/1) ... [2020-12-02 12:12:55,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:55" (1/1) ... [2020-12-02 12:12:55,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:55" (1/1) ... [2020-12-02 12:12:55,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:55" (1/1) ... [2020-12-02 12:12:55,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:55" (1/1) ... [2020-12-02 12:12:55,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:55" (1/1) ... [2020-12-02 12:12:55,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:55" (1/1) ... [2020-12-02 12:12:55,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 12:12:55,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 12:12:55,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 12:12:55,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 12:12:55,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:55" (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 12:12:55,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 12:12:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-02 12:12:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 12:12:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 12:12:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-02 12:12:55,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-02 12:12:55,358 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-02 12:12:55,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-02 12:12:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-02 12:12:55,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-02 12:12:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 12:12:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-02 12:12:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 12:12:55,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 12:12:55,362 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 12:12:55,874 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 12:12:55,874 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-02 12:12:55,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:55 BoogieIcfgContainer [2020-12-02 12:12:55,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 12:12:55,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 12:12:55,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 12:12:55,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 12:12:55,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:12:54" (1/3) ... [2020-12-02 12:12:55,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f7e5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:12:55, skipping insertion in model container [2020-12-02 12:12:55,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:12:55" (2/3) ... [2020-12-02 12:12:55,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f7e5c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:12:55, skipping insertion in model container [2020-12-02 12:12:55,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:55" (3/3) ... [2020-12-02 12:12:55,896 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2020-12-02 12:12:55,914 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-02 12:12:55,915 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 12:12:55,920 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 12:12:55,921 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-02 12:12:55,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,959 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,959 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,959 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,960 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,960 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,960 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,960 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,961 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,961 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,962 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,962 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,963 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,963 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,963 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,964 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,964 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,964 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,964 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,965 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,966 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,966 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,967 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,967 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,967 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,967 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,968 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,968 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,968 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,969 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,969 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,969 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,969 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,972 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,973 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,973 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,973 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,979 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,980 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,980 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,980 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,983 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,984 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,984 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,984 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-02 12:12:55,986 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-02 12:12:56,000 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 12:12:56,025 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 12:12:56,025 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 12:12:56,025 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 12:12:56,026 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 12:12:56,026 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 12:12:56,026 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 12:12:56,026 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 12:12:56,026 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 12:12:56,041 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-02 12:12:56,044 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-02 12:12:56,048 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2020-12-02 12:12:56,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2020-12-02 12:12:56,100 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2020-12-02 12:12:56,100 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-02 12:12:56,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 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. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-02 12:12:56,108 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-02 12:12:58,016 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-02 12:12:58,966 WARN L197 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:12:59,073 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-02 12:12:59,287 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-12-02 12:12:59,442 INFO L131 LiptonReduction]: Checked pairs total: 2571 [2020-12-02 12:12:59,442 INFO L133 LiptonReduction]: Total number of compositions: 60 [2020-12-02 12:12:59,449 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-02 12:12:59,480 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-02 12:12:59,483 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-02 12:12:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 12:12:59,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:59,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:59,492 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:59,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:59,499 INFO L82 PathProgramCache]: Analyzing trace with hash 421261709, now seen corresponding path program 1 times [2020-12-02 12:12:59,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:59,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791588773] [2020-12-02 12:12:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:12:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:12:59,757 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 12:12:59,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791588773] [2020-12-02 12:12:59,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:12:59,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:12:59,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916390445] [2020-12-02 12:12:59,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 12:12:59,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:12:59,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 12:12:59,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 12:12:59,785 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-02 12:12:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:12:59,824 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-02 12:12:59,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 12:12:59,826 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-02 12:12:59,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:12:59,845 INFO L225 Difference]: With dead ends: 362 [2020-12-02 12:12:59,846 INFO L226 Difference]: Without dead ends: 298 [2020-12-02 12:12:59,847 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 12:12:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-02 12:12:59,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-02 12:12:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-02 12:12:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-02 12:12:59,930 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-02 12:12:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:12:59,931 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-02 12:12:59,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 12:12:59,932 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-02 12:12:59,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-02 12:12:59,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:12:59,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:12:59,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 12:12:59,934 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:12:59,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:12:59,935 INFO L82 PathProgramCache]: Analyzing trace with hash 174206349, now seen corresponding path program 1 times [2020-12-02 12:12:59,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:12:59,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408290635] [2020-12-02 12:12:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:00,161 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 12:13:00,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408290635] [2020-12-02 12:13:00,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:00,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 12:13:00,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616813006] [2020-12-02 12:13:00,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:13:00,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:00,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:13:00,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:13:00,166 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-02 12:13:00,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:00,226 INFO L93 Difference]: Finished difference Result 485 states and 1373 transitions. [2020-12-02 12:13:00,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:13:00,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-02 12:13:00,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:00,232 INFO L225 Difference]: With dead ends: 485 [2020-12-02 12:13:00,232 INFO L226 Difference]: Without dead ends: 326 [2020-12-02 12:13:00,233 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 12:13:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-12-02 12:13:00,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 276. [2020-12-02 12:13:00,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-12-02 12:13:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 716 transitions. [2020-12-02 12:13:00,260 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 716 transitions. Word has length 9 [2020-12-02 12:13:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:00,261 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 716 transitions. [2020-12-02 12:13:00,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:13:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 716 transitions. [2020-12-02 12:13:00,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 12:13:00,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:00,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:00,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 12:13:00,267 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:00,268 INFO L82 PathProgramCache]: Analyzing trace with hash 403113335, now seen corresponding path program 1 times [2020-12-02 12:13:00,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:00,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629964096] [2020-12-02 12:13:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:00,375 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 12:13:00,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629964096] [2020-12-02 12:13:00,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:00,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:13:00,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603227121] [2020-12-02 12:13:00,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:13:00,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:00,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:13:00,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:13:00,378 INFO L87 Difference]: Start difference. First operand 276 states and 716 transitions. Second operand 5 states. [2020-12-02 12:13:00,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:00,440 INFO L93 Difference]: Finished difference Result 302 states and 732 transitions. [2020-12-02 12:13:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:13:00,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 12:13:00,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:00,443 INFO L225 Difference]: With dead ends: 302 [2020-12-02 12:13:00,443 INFO L226 Difference]: Without dead ends: 212 [2020-12-02 12:13:00,443 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 12:13:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-02 12:13:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 190. [2020-12-02 12:13:00,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-12-02 12:13:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 462 transitions. [2020-12-02 12:13:00,459 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 462 transitions. Word has length 10 [2020-12-02 12:13:00,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:00,459 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 462 transitions. [2020-12-02 12:13:00,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:13:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 462 transitions. [2020-12-02 12:13:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:13:00,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:00,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:00,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 12:13:00,462 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:00,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1450144045, now seen corresponding path program 1 times [2020-12-02 12:13:00,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:00,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996456573] [2020-12-02 12:13:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:00,536 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 12:13:00,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996456573] [2020-12-02 12:13:00,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:00,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:13:00,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052144323] [2020-12-02 12:13:00,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:13:00,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:00,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:13:00,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:13:00,539 INFO L87 Difference]: Start difference. First operand 190 states and 462 transitions. Second operand 5 states. [2020-12-02 12:13:00,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:00,595 INFO L93 Difference]: Finished difference Result 226 states and 535 transitions. [2020-12-02 12:13:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:13:00,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:13:00,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:00,597 INFO L225 Difference]: With dead ends: 226 [2020-12-02 12:13:00,597 INFO L226 Difference]: Without dead ends: 198 [2020-12-02 12:13:00,598 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 12:13:00,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-02 12:13:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 174. [2020-12-02 12:13:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-02 12:13:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 416 transitions. [2020-12-02 12:13:00,609 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 416 transitions. Word has length 12 [2020-12-02 12:13:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:00,610 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 416 transitions. [2020-12-02 12:13:00,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:13:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 416 transitions. [2020-12-02 12:13:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 12:13:00,612 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:00,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:00,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-02 12:13:00,612 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:00,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1450133474, now seen corresponding path program 1 times [2020-12-02 12:13:00,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:00,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360457339] [2020-12-02 12:13:00,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:00,672 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 12:13:00,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360457339] [2020-12-02 12:13:00,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:00,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:13:00,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963415035] [2020-12-02 12:13:00,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:13:00,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:00,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:13:00,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:13:00,675 INFO L87 Difference]: Start difference. First operand 174 states and 416 transitions. Second operand 5 states. [2020-12-02 12:13:00,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:00,743 INFO L93 Difference]: Finished difference Result 258 states and 590 transitions. [2020-12-02 12:13:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 12:13:00,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-02 12:13:00,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:00,746 INFO L225 Difference]: With dead ends: 258 [2020-12-02 12:13:00,746 INFO L226 Difference]: Without dead ends: 176 [2020-12-02 12:13:00,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 12:13:00,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-02 12:13:00,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 148. [2020-12-02 12:13:00,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-02 12:13:00,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 345 transitions. [2020-12-02 12:13:00,755 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 345 transitions. Word has length 12 [2020-12-02 12:13:00,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:00,755 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 345 transitions. [2020-12-02 12:13:00,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:13:00,756 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 345 transitions. [2020-12-02 12:13:00,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 12:13:00,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:00,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:00,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-02 12:13:00,758 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:00,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:00,758 INFO L82 PathProgramCache]: Analyzing trace with hash 410097923, now seen corresponding path program 1 times [2020-12-02 12:13:00,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:00,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902758643] [2020-12-02 12:13:00,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:00,837 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 12:13:00,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902758643] [2020-12-02 12:13:00,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:00,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 12:13:00,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061148572] [2020-12-02 12:13:00,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 12:13:00,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:00,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 12:13:00,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 12:13:00,840 INFO L87 Difference]: Start difference. First operand 148 states and 345 transitions. Second operand 4 states. [2020-12-02 12:13:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:00,870 INFO L93 Difference]: Finished difference Result 159 states and 337 transitions. [2020-12-02 12:13:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 12:13:00,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-02 12:13:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:00,873 INFO L225 Difference]: With dead ends: 159 [2020-12-02 12:13:00,873 INFO L226 Difference]: Without dead ends: 124 [2020-12-02 12:13:00,873 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 12:13:00,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-02 12:13:00,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-12-02 12:13:00,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-02 12:13:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 261 transitions. [2020-12-02 12:13:00,880 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 261 transitions. Word has length 13 [2020-12-02 12:13:00,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:00,880 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 261 transitions. [2020-12-02 12:13:00,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 12:13:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 261 transitions. [2020-12-02 12:13:00,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 12:13:00,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:00,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:00,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-02 12:13:00,882 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:00,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:00,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1383768558, now seen corresponding path program 1 times [2020-12-02 12:13:00,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:00,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441564840] [2020-12-02 12:13:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:00,978 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 12:13:00,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441564840] [2020-12-02 12:13:00,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:00,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 12:13:00,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401380585] [2020-12-02 12:13:00,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 12:13:00,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:00,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 12:13:00,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 12:13:00,985 INFO L87 Difference]: Start difference. First operand 124 states and 261 transitions. Second operand 5 states. [2020-12-02 12:13:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:01,041 INFO L93 Difference]: Finished difference Result 110 states and 215 transitions. [2020-12-02 12:13:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:13:01,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 12:13:01,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:01,043 INFO L225 Difference]: With dead ends: 110 [2020-12-02 12:13:01,044 INFO L226 Difference]: Without dead ends: 89 [2020-12-02 12:13:01,044 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 12:13:01,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-02 12:13:01,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-02 12:13:01,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-02 12:13:01,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 172 transitions. [2020-12-02 12:13:01,048 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 172 transitions. Word has length 14 [2020-12-02 12:13:01,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:01,049 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 172 transitions. [2020-12-02 12:13:01,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 12:13:01,049 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 172 transitions. [2020-12-02 12:13:01,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-02 12:13:01,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 12:13:01,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 12:13:01,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-02 12:13:01,051 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 12:13:01,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 12:13:01,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1798861421, now seen corresponding path program 1 times [2020-12-02 12:13:01,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 12:13:01,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490583058] [2020-12-02 12:13:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 12:13:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 12:13:01,181 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 12:13:01,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490583058] [2020-12-02 12:13:01,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 12:13:01,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 12:13:01,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784501713] [2020-12-02 12:13:01,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 12:13:01,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 12:13:01,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 12:13:01,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 12:13:01,194 INFO L87 Difference]: Start difference. First operand 89 states and 172 transitions. Second operand 6 states. [2020-12-02 12:13:01,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 12:13:01,228 INFO L93 Difference]: Finished difference Result 79 states and 157 transitions. [2020-12-02 12:13:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 12:13:01,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-02 12:13:01,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 12:13:01,229 INFO L225 Difference]: With dead ends: 79 [2020-12-02 12:13:01,229 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 12:13:01,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-02 12:13:01,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 12:13:01,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 12:13:01,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 12:13:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 12:13:01,230 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-02 12:13:01,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 12:13:01,230 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 12:13:01,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 12:13:01,231 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 12:13:01,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 12:13:01,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-02 12:13:01,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:13:01 BasicIcfg [2020-12-02 12:13:01,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 12:13:01,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 12:13:01,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 12:13:01,236 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 12:13:01,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:12:55" (3/4) ... [2020-12-02 12:13:01,241 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 12:13:01,250 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-02 12:13:01,250 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-02 12:13:01,250 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-02 12:13:01,258 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-02 12:13:01,258 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 12:13:01,258 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:13:01,258 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 12:13:01,330 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 12:13:01,330 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 12:13:01,331 INFO L168 Benchmark]: Toolchain (without parser) took 7024.45 ms. Allocated memory was 50.3 MB in the beginning and 138.4 MB in the end (delta: 88.1 MB). Free memory was 25.5 MB in the beginning and 75.4 MB in the end (delta: -49.8 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:01,332 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 41.9 MB. Free memory was 19.7 MB in the beginning and 19.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:13:01,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 835.51 ms. Allocated memory is still 50.3 MB. Free memory was 25.3 MB in the beginning and 28.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:01,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.23 ms. Allocated memory is still 50.3 MB. Free memory was 27.8 MB in the beginning and 26.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:01,333 INFO L168 Benchmark]: Boogie Preprocessor took 44.44 ms. Allocated memory is still 50.3 MB. Free memory was 26.0 MB in the beginning and 24.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 12:13:01,334 INFO L168 Benchmark]: RCFGBuilder took 636.08 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 24.5 MB in the beginning and 43.4 MB in the end (delta: -18.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:01,334 INFO L168 Benchmark]: TraceAbstraction took 5346.05 ms. Allocated memory was 62.9 MB in the beginning and 138.4 MB in the end (delta: 75.5 MB). Free memory was 43.1 MB in the beginning and 78.5 MB in the end (delta: -35.4 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:01,335 INFO L168 Benchmark]: Witness Printer took 94.67 ms. Allocated memory is still 138.4 MB. Free memory was 77.5 MB in the beginning and 75.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 12:13:01,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 41.9 MB. Free memory was 19.7 MB in the beginning and 19.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 835.51 ms. Allocated memory is still 50.3 MB. Free memory was 25.3 MB in the beginning and 28.0 MB in the end (delta: -2.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.23 ms. Allocated memory is still 50.3 MB. Free memory was 27.8 MB in the beginning and 26.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.44 ms. Allocated memory is still 50.3 MB. Free memory was 26.0 MB in the beginning and 24.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 636.08 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 24.5 MB in the beginning and 43.4 MB in the end (delta: -18.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5346.05 ms. Allocated memory was 62.9 MB in the beginning and 138.4 MB in the end (delta: 75.5 MB). Free memory was 43.1 MB in the beginning and 78.5 MB in the end (delta: -35.4 MB). Peak memory consumption was 39.7 MB. Max. memory is 16.1 GB. * Witness Printer took 94.67 ms. Allocated memory is still 138.4 MB. Free memory was 77.5 MB in the beginning and 75.4 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 833 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 81 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.3s, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2571 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 181 SDtfs, 202 SDslu, 276 SDs, 0 SdLazy, 132 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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, 124 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 4466 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...