./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe021_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe021_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC --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 4ac9fb7ba9629726b891659a82add33d1f818961 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:29:53,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:29:53,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:29:53,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:29:53,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:29:53,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:29:53,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:29:53,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:29:53,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:29:53,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:29:53,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:29:53,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:29:53,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:29:53,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:29:53,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:29:53,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:29:53,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:29:53,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:29:53,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:29:53,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:29:53,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:29:53,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:29:53,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:29:53,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:29:53,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:29:53,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:29:53,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:29:53,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:29:53,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:29:53,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:29:53,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:29:53,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:29:53,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:29:53,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:29:53,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:29:53,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:29:53,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:29:53,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:29:53,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:29:53,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:29:53,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:29:53,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:29:53,421 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:29:53,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:29:53,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:29:53,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:29:53,423 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:29:53,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:29:53,424 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:29:53,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:29:53,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:29:53,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:29:53,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:29:53,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:29:53,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:29:53,425 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:29:53,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:29:53,426 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:29:53,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:29:53,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:29:53,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:29:53,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:29:53,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:29:53,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:29:53,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:29:53,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:29:53,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:29:53,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:29:53,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:29:53,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:29:53,429 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac9fb7ba9629726b891659a82add33d1f818961 [2021-10-11 00:29:53,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:29:53,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:29:53,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:29:53,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:29:53,684 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:29:53,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/pthread-wmm/safe021_tso.oepc.i [2021-10-11 00:29:53,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/data/e0453dfab/09a1e98f7957424c867558fff1cd68d0/FLAG407a99c24 [2021-10-11 00:29:54,400 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:29:54,402 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/sv-benchmarks/c/pthread-wmm/safe021_tso.oepc.i [2021-10-11 00:29:54,431 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/data/e0453dfab/09a1e98f7957424c867558fff1cd68d0/FLAG407a99c24 [2021-10-11 00:29:54,651 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/data/e0453dfab/09a1e98f7957424c867558fff1cd68d0 [2021-10-11 00:29:54,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:29:54,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:29:54,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:54,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:29:54,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:29:54,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:54" (1/1) ... [2021-10-11 00:29:54,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc7a23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:54, skipping insertion in model container [2021-10-11 00:29:54,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:54" (1/1) ... [2021-10-11 00:29:54,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:29:54,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:29:54,939 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/sv-benchmarks/c/pthread-wmm/safe021_tso.oepc.i[950,963] [2021-10-11 00:29:55,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:55,204 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:29:55,218 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/sv-benchmarks/c/pthread-wmm/safe021_tso.oepc.i[950,963] [2021-10-11 00:29:55,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:55,342 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:29:55,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:55 WrapperNode [2021-10-11 00:29:55,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:55,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:55,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:29:55,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:29:55,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:55" (1/1) ... [2021-10-11 00:29:55,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:55" (1/1) ... [2021-10-11 00:29:55,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:55,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:29:55,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:29:55,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:29:55,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:55" (1/1) ... [2021-10-11 00:29:55,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:55" (1/1) ... [2021-10-11 00:29:55,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:55" (1/1) ... [2021-10-11 00:29:55,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:55" (1/1) ... [2021-10-11 00:29:55,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:55" (1/1) ... [2021-10-11 00:29:55,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:55" (1/1) ... [2021-10-11 00:29:55,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:55" (1/1) ... [2021-10-11 00:29:55,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:29:55,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:29:55,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:29:55,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:29:55,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:55" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:29:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:29:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 00:29:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:29:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:29:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 00:29:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 00:29:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 00:29:55,520 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 00:29:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 00:29:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 00:29:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:29:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 00:29:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:29:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:29:55,524 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 00:29:55,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:29:55,989 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 00:29:55,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:55 BoogieIcfgContainer [2021-10-11 00:29:55,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:29:55,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:29:55,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:29:55,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:29:55,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:29:54" (1/3) ... [2021-10-11 00:29:55,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea73e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:55, skipping insertion in model container [2021-10-11 00:29:55,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:55" (2/3) ... [2021-10-11 00:29:55,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea73e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:55, skipping insertion in model container [2021-10-11 00:29:56,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:55" (3/3) ... [2021-10-11 00:29:56,001 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2021-10-11 00:29:56,016 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 00:29:56,017 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:29:56,020 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 00:29:56,021 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 00:29:56,118 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,118 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,118 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,119 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,119 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,119 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,119 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,120 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,120 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,121 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,121 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,121 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,122 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,122 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,122 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,122 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,123 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,123 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,124 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,125 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,125 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,125 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,125 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,126 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,126 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,126 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,126 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,128 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,130 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,130 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,130 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,131 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,135 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,136 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,136 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,136 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,138 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,139 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,139 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,139 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 00:29:56,141 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 00:29:56,153 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 00:29:56,174 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:29:56,174 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:29:56,174 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:29:56,174 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:29:56,174 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:29:56,175 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:29:56,175 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:29:56,175 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:29:56,187 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 00:29:56,189 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2021-10-11 00:29:56,192 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2021-10-11 00:29:56,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-10-11 00:29:56,235 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-10-11 00:29:56,237 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 00:29:56,246 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 49 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. [2021-10-11 00:29:56,249 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-10-11 00:29:59,046 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-10-11 00:29:59,301 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-10-11 00:29:59,389 INFO L131 LiptonReduction]: Checked pairs total: 2563 [2021-10-11 00:29:59,389 INFO L133 LiptonReduction]: Total number of compositions: 61 [2021-10-11 00:29:59,395 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-10-11 00:29:59,422 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2021-10-11 00:29:59,424 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2021-10-11 00:29:59,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 00:29:59,431 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:59,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:59,432 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:59,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:59,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1485857802, now seen corresponding path program 1 times [2021-10-11 00:29:59,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:59,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027074335] [2021-10-11 00:29:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:59,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027074335] [2021-10-11 00:29:59,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:59,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:59,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962241245] [2021-10-11 00:29:59,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:29:59,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:59,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:29:59,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:29:59,621 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2021-10-11 00:29:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:59,651 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-10-11 00:29:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:29:59,652 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 00:29:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:59,668 INFO L225 Difference]: With dead ends: 362 [2021-10-11 00:29:59,668 INFO L226 Difference]: Without dead ends: 298 [2021-10-11 00:29:59,670 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 [2021-10-11 00:29:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-11 00:29:59,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-11 00:29:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2021-10-11 00:29:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-10-11 00:29:59,736 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-10-11 00:29:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:59,737 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-10-11 00:29:59,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:29:59,738 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-10-11 00:29:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:29:59,739 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:59,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:59,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:29:59,740 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:59,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:59,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1183024898, now seen corresponding path program 1 times [2021-10-11 00:29:59,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:59,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549834565] [2021-10-11 00:29:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:59,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549834565] [2021-10-11 00:29:59,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:59,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:59,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316811597] [2021-10-11 00:29:59,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:59,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:59,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:59,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:59,976 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2021-10-11 00:30:00,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:00,026 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2021-10-11 00:30:00,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:30:00,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 00:30:00,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:00,033 INFO L225 Difference]: With dead ends: 346 [2021-10-11 00:30:00,033 INFO L226 Difference]: Without dead ends: 282 [2021-10-11 00:30:00,033 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 [2021-10-11 00:30:00,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-10-11 00:30:00,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-10-11 00:30:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2021-10-11 00:30:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2021-10-11 00:30:00,063 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2021-10-11 00:30:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:00,064 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2021-10-11 00:30:00,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:30:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2021-10-11 00:30:00,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:30:00,066 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:00,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:00,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:30:00,066 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:00,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:00,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1694304319, now seen corresponding path program 1 times [2021-10-11 00:30:00,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:00,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801143600] [2021-10-11 00:30:00,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:00,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801143600] [2021-10-11 00:30:00,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:00,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:00,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28717266] [2021-10-11 00:30:00,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:30:00,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:00,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:30:00,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:30:00,149 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 5 states. [2021-10-11 00:30:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:00,213 INFO L93 Difference]: Finished difference Result 418 states and 1114 transitions. [2021-10-11 00:30:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:30:00,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 00:30:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:00,217 INFO L225 Difference]: With dead ends: 418 [2021-10-11 00:30:00,217 INFO L226 Difference]: Without dead ends: 314 [2021-10-11 00:30:00,218 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 [2021-10-11 00:30:00,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-10-11 00:30:00,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 278. [2021-10-11 00:30:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2021-10-11 00:30:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 760 transitions. [2021-10-11 00:30:00,246 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 760 transitions. Word has length 10 [2021-10-11 00:30:00,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:00,247 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 760 transitions. [2021-10-11 00:30:00,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:30:00,247 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 760 transitions. [2021-10-11 00:30:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:30:00,254 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:00,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:00,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:30:00,254 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:00,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:00,256 INFO L82 PathProgramCache]: Analyzing trace with hash 983803802, now seen corresponding path program 1 times [2021-10-11 00:30:00,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:00,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397631644] [2021-10-11 00:30:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:00,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397631644] [2021-10-11 00:30:00,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:00,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:00,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226951412] [2021-10-11 00:30:00,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:30:00,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:00,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:30:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:30:00,354 INFO L87 Difference]: Start difference. First operand 278 states and 760 transitions. Second operand 5 states. [2021-10-11 00:30:00,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:00,415 INFO L93 Difference]: Finished difference Result 340 states and 898 transitions. [2021-10-11 00:30:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:30:00,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 00:30:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:00,418 INFO L225 Difference]: With dead ends: 340 [2021-10-11 00:30:00,418 INFO L226 Difference]: Without dead ends: 178 [2021-10-11 00:30:00,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:30:00,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-11 00:30:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-10-11 00:30:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2021-10-11 00:30:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 444 transitions. [2021-10-11 00:30:00,423 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 444 transitions. Word has length 11 [2021-10-11 00:30:00,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:00,424 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 444 transitions. [2021-10-11 00:30:00,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:30:00,424 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 444 transitions. [2021-10-11 00:30:00,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:30:00,425 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:00,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:00,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:30:00,425 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:00,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:00,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1699197876, now seen corresponding path program 1 times [2021-10-11 00:30:00,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:00,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279583994] [2021-10-11 00:30:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:00,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279583994] [2021-10-11 00:30:00,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:00,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:30:00,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706846886] [2021-10-11 00:30:00,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:30:00,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:00,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:30:00,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:30:00,500 INFO L87 Difference]: Start difference. First operand 178 states and 444 transitions. Second operand 4 states. [2021-10-11 00:30:00,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:00,536 INFO L93 Difference]: Finished difference Result 194 states and 437 transitions. [2021-10-11 00:30:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:30:00,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 00:30:00,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:00,539 INFO L225 Difference]: With dead ends: 194 [2021-10-11 00:30:00,540 INFO L226 Difference]: Without dead ends: 150 [2021-10-11 00:30:00,540 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 [2021-10-11 00:30:00,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-11 00:30:00,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-11 00:30:00,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2021-10-11 00:30:00,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 339 transitions. [2021-10-11 00:30:00,546 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 339 transitions. Word has length 12 [2021-10-11 00:30:00,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:00,547 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 339 transitions. [2021-10-11 00:30:00,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:30:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 339 transitions. [2021-10-11 00:30:00,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 00:30:00,548 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:00,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:00,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:30:00,548 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:00,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:00,549 INFO L82 PathProgramCache]: Analyzing trace with hash -610429625, now seen corresponding path program 1 times [2021-10-11 00:30:00,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:00,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051840774] [2021-10-11 00:30:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:00,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051840774] [2021-10-11 00:30:00,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:00,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:30:00,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254750439] [2021-10-11 00:30:00,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:30:00,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:00,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:30:00,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:30:00,666 INFO L87 Difference]: Start difference. First operand 150 states and 339 transitions. Second operand 5 states. [2021-10-11 00:30:00,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:00,714 INFO L93 Difference]: Finished difference Result 137 states and 280 transitions. [2021-10-11 00:30:00,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:30:00,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-10-11 00:30:00,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:00,716 INFO L225 Difference]: With dead ends: 137 [2021-10-11 00:30:00,716 INFO L226 Difference]: Without dead ends: 109 [2021-10-11 00:30:00,717 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 [2021-10-11 00:30:00,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-11 00:30:00,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-10-11 00:30:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-10-11 00:30:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 220 transitions. [2021-10-11 00:30:00,721 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 220 transitions. Word has length 13 [2021-10-11 00:30:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:00,721 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 220 transitions. [2021-10-11 00:30:00,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:30:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 220 transitions. [2021-10-11 00:30:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 00:30:00,722 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:00,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:00,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:30:00,723 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:00,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1583313088, now seen corresponding path program 1 times [2021-10-11 00:30:00,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:00,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601406122] [2021-10-11 00:30:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:00,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601406122] [2021-10-11 00:30:00,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:00,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:30:00,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855906675] [2021-10-11 00:30:00,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:30:00,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:00,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:30:00,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:30:00,846 INFO L87 Difference]: Start difference. First operand 109 states and 220 transitions. Second operand 6 states. [2021-10-11 00:30:00,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:00,891 INFO L93 Difference]: Finished difference Result 98 states and 196 transitions. [2021-10-11 00:30:00,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:30:00,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-10-11 00:30:00,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:00,893 INFO L225 Difference]: With dead ends: 98 [2021-10-11 00:30:00,894 INFO L226 Difference]: Without dead ends: 81 [2021-10-11 00:30:00,895 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 [2021-10-11 00:30:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-11 00:30:00,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2021-10-11 00:30:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-10-11 00:30:00,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 157 transitions. [2021-10-11 00:30:00,898 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 157 transitions. Word has length 15 [2021-10-11 00:30:00,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:00,898 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 157 transitions. [2021-10-11 00:30:00,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:30:00,899 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 157 transitions. [2021-10-11 00:30:00,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-11 00:30:00,899 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:30:00,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:30:00,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:30:00,900 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:30:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:30:00,900 INFO L82 PathProgramCache]: Analyzing trace with hash 414255100, now seen corresponding path program 1 times [2021-10-11 00:30:00,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:30:00,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934312645] [2021-10-11 00:30:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:30:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:30:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:30:00,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934312645] [2021-10-11 00:30:00,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:30:00,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:30:00,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100355306] [2021-10-11 00:30:00,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:30:00,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:30:00,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:30:00,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:30:00,995 INFO L87 Difference]: Start difference. First operand 77 states and 157 transitions. Second operand 5 states. [2021-10-11 00:30:01,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:30:01,025 INFO L93 Difference]: Finished difference Result 76 states and 156 transitions. [2021-10-11 00:30:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:30:01,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-10-11 00:30:01,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:30:01,026 INFO L225 Difference]: With dead ends: 76 [2021-10-11 00:30:01,026 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 00:30:01,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:30:01,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 00:30:01,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 00:30:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 00:30:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:30:01,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-10-11 00:30:01,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:30:01,027 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:30:01,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:30:01,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:30:01,028 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 00:30:01,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 00:30:01,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:30:01 BasicIcfg [2021-10-11 00:30:01,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:30:01,031 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:30:01,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:30:01,032 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:30:01,032 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:55" (3/4) ... [2021-10-11 00:30:01,035 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 00:30:01,041 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 00:30:01,041 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 00:30:01,042 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 00:30:01,046 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 00:30:01,047 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 00:30:01,047 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:30:01,047 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 00:30:01,084 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea7a3a87-cc5a-4983-8631-f97e77974a31/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:30:01,084 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:30:01,085 INFO L168 Benchmark]: Toolchain (without parser) took 6427.56 ms. Allocated memory was 119.5 MB in the beginning and 201.3 MB in the end (delta: 81.8 MB). Free memory was 90.7 MB in the beginning and 145.7 MB in the end (delta: -55.0 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,086 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory was 55.8 MB in the beginning and 55.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:30:01,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.53 ms. Allocated memory is still 119.5 MB. Free memory was 90.4 MB in the beginning and 59.7 MB in the end (delta: 30.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.90 ms. Allocated memory is still 119.5 MB. Free memory was 59.7 MB in the beginning and 57.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,088 INFO L168 Benchmark]: Boogie Preprocessor took 25.22 ms. Allocated memory is still 119.5 MB. Free memory was 57.5 MB in the beginning and 56.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,088 INFO L168 Benchmark]: RCFGBuilder took 579.04 ms. Allocated memory is still 119.5 MB. Free memory was 56.1 MB in the beginning and 34.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,089 INFO L168 Benchmark]: TraceAbstraction took 5037.39 ms. Allocated memory was 119.5 MB in the beginning and 201.3 MB in the end (delta: 81.8 MB). Free memory was 33.8 MB in the beginning and 147.8 MB in the end (delta: -114.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:30:01,089 INFO L168 Benchmark]: Witness Printer took 52.78 ms. Allocated memory is still 201.3 MB. Free memory was 147.8 MB in the beginning and 145.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:30:01,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 88.1 MB. Free memory was 55.8 MB in the beginning and 55.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 682.53 ms. Allocated memory is still 119.5 MB. Free memory was 90.4 MB in the beginning and 59.7 MB in the end (delta: 30.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.90 ms. Allocated memory is still 119.5 MB. Free memory was 59.7 MB in the beginning and 57.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.22 ms. Allocated memory is still 119.5 MB. Free memory was 57.5 MB in the beginning and 56.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 579.04 ms. Allocated memory is still 119.5 MB. Free memory was 56.1 MB in the beginning and 34.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5037.39 ms. Allocated memory was 119.5 MB in the beginning and 201.3 MB in the end (delta: 81.8 MB). Free memory was 33.8 MB in the beginning and 147.8 MB in the end (delta: -114.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 52.78 ms. Allocated memory is still 201.3 MB. Free memory was 147.8 MB in the beginning and 145.7 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 782 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 67 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2563 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: 4.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 182 SDtfs, 182 SDslu, 307 SDs, 0 SdLazy, 121 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s 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, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 3756 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...