./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b20f0362d47fb0eca5e2e50905980195c4017e92 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:39:57,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:39:57,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:39:57,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:39:57,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:39:57,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:39:57,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:39:57,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:39:57,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:39:57,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:39:57,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:39:57,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:39:57,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:39:57,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:39:57,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:39:57,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:39:57,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:39:57,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:39:57,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:39:57,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:39:57,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:39:57,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:39:57,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:39:57,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:39:57,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:39:57,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:39:57,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:39:57,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:39:57,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:39:57,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:39:57,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:39:57,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:39:57,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:39:57,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:39:57,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:39:57,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:39:57,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:39:57,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:39:57,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:39:57,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:39:57,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:39:57,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 17:39:57,524 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:39:57,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:39:57,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:39:57,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:39:57,525 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:39:57,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:39:57,526 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:39:57,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:39:57,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:39:57,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:39:57,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:39:57,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:39:57,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:39:57,527 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:39:57,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:39:57,527 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:39:57,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:39:57,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:39:57,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:39:57,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:39:57,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:39:57,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:39:57,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:39:57,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:39:57,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:39:57,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:39:57,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:39:57,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:39:57,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:39:57,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer 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(__VERIFIER_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 -> b20f0362d47fb0eca5e2e50905980195c4017e92 [2019-12-07 17:39:57,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:39:57,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:39:57,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:39:57,653 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:39:57,653 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:39:57,654 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i [2019-12-07 17:39:57,690 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer/data/302435562/0c1791c62c2c41af9ac7c57bedfbcda7/FLAG47227e02b [2019-12-07 17:39:58,135 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:39:58,135 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/sv-benchmarks/c/pthread-wmm/safe002_tso.oepc.i [2019-12-07 17:39:58,145 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer/data/302435562/0c1791c62c2c41af9ac7c57bedfbcda7/FLAG47227e02b [2019-12-07 17:39:58,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer/data/302435562/0c1791c62c2c41af9ac7c57bedfbcda7 [2019-12-07 17:39:58,156 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:39:58,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:39:58,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:39:58,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:39:58,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:39:58,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:39:58" (1/1) ... [2019-12-07 17:39:58,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b06cb05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58, skipping insertion in model container [2019-12-07 17:39:58,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:39:58" (1/1) ... [2019-12-07 17:39:58,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:39:58,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:39:58,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:39:58,442 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:39:58,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:39:58,516 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:39:58,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58 WrapperNode [2019-12-07 17:39:58,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:39:58,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:39:58,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:39:58,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:39:58,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58" (1/1) ... [2019-12-07 17:39:58,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58" (1/1) ... [2019-12-07 17:39:58,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:39:58,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:39:58,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:39:58,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:39:58,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58" (1/1) ... [2019-12-07 17:39:58,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58" (1/1) ... [2019-12-07 17:39:58,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58" (1/1) ... [2019-12-07 17:39:58,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58" (1/1) ... [2019-12-07 17:39:58,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58" (1/1) ... [2019-12-07 17:39:58,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58" (1/1) ... [2019-12-07 17:39:58,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58" (1/1) ... [2019-12-07 17:39:58,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:39:58,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:39:58,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:39:58,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:39:58,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer/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 [2019-12-07 17:39:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 17:39:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 17:39:58,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 17:39:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:39:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 17:39:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 17:39:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 17:39:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 17:39:58,612 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 17:39:58,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 17:39:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 17:39:58,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:39:58,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:39:58,614 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 17:39:58,811 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:39:58,811 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 17:39:58,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:39:58 BoogieIcfgContainer [2019-12-07 17:39:58,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:39:58,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:39:58,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:39:58,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:39:58,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:39:58" (1/3) ... [2019-12-07 17:39:58,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10774395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:39:58, skipping insertion in model container [2019-12-07 17:39:58,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:39:58" (2/3) ... [2019-12-07 17:39:58,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10774395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:39:58, skipping insertion in model container [2019-12-07 17:39:58,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:39:58" (3/3) ... [2019-12-07 17:39:58,817 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2019-12-07 17:39:58,823 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 17:39:58,823 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:39:58,828 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 17:39:58,828 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 17:39:58,846 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,846 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,846 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,846 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,847 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,847 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,847 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,847 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,847 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,847 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,848 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,848 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,848 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,848 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,848 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,848 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,849 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,849 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 17:39:58,865 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 17:39:58,878 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:39:58,878 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:39:58,878 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:39:58,878 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:39:58,878 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:39:58,878 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:39:58,878 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:39:58,879 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:39:58,886 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-07 17:39:58,888 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 17:39:58,916 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 17:39:58,917 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 17:39:58,921 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 17:39:58,923 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 17:39:58,934 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 17:39:58,934 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 17:39:58,935 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 17:39:58,936 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 17:39:58,937 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 17:39:59,673 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-12-07 17:39:59,790 INFO L206 etLargeBlockEncoding]: Checked pairs total: 478 [2019-12-07 17:39:59,790 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-07 17:39:59,793 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-07 17:39:59,800 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-07 17:39:59,802 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-07 17:39:59,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 17:39:59,806 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:39:59,807 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:39:59,807 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:39:59,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:39:59,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1804038140, now seen corresponding path program 1 times [2019-12-07 17:39:59,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:39:59,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659777963] [2019-12-07 17:39:59,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:39:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:00,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659777963] [2019-12-07 17:40:00,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:00,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:40:00,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922678473] [2019-12-07 17:40:00,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:40:00,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:00,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:40:00,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:40:00,024 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-07 17:40:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:00,068 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-07 17:40:00,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:40:00,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 17:40:00,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:00,079 INFO L225 Difference]: With dead ends: 58 [2019-12-07 17:40:00,080 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 17:40:00,081 INFO L630 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 [2019-12-07 17:40:00,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 17:40:00,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 17:40:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 17:40:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 17:40:00,105 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 17:40:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:00,105 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 17:40:00,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:40:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 17:40:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 17:40:00,106 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:00,106 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:00,106 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:40:00,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:00,106 INFO L82 PathProgramCache]: Analyzing trace with hash 982750768, now seen corresponding path program 1 times [2019-12-07 17:40:00,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:00,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589200766] [2019-12-07 17:40:00,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:00,170 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589200766] [2019-12-07 17:40:00,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:00,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:40:00,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479049006] [2019-12-07 17:40:00,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:40:00,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:00,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:40:00,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:40:00,172 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 4 states. [2019-12-07 17:40:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:00,186 INFO L93 Difference]: Finished difference Result 44 states and 71 transitions. [2019-12-07 17:40:00,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:40:00,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 17:40:00,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:00,188 INFO L225 Difference]: With dead ends: 44 [2019-12-07 17:40:00,188 INFO L226 Difference]: Without dead ends: 40 [2019-12-07 17:40:00,188 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:40:00,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-07 17:40:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-12-07 17:40:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 17:40:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 63 transitions. [2019-12-07 17:40:00,192 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 63 transitions. Word has length 9 [2019-12-07 17:40:00,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:00,193 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 63 transitions. [2019-12-07 17:40:00,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:40:00,193 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 63 transitions. [2019-12-07 17:40:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:40:00,193 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:00,193 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:00,193 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:40:00,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:00,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1542655070, now seen corresponding path program 1 times [2019-12-07 17:40:00,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:00,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238685155] [2019-12-07 17:40:00,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:00,254 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238685155] [2019-12-07 17:40:00,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:00,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:40:00,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141672329] [2019-12-07 17:40:00,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:40:00,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:00,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:40:00,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:40:00,255 INFO L87 Difference]: Start difference. First operand 39 states and 63 transitions. Second operand 6 states. [2019-12-07 17:40:00,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:00,298 INFO L93 Difference]: Finished difference Result 37 states and 57 transitions. [2019-12-07 17:40:00,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:40:00,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 17:40:00,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:00,299 INFO L225 Difference]: With dead ends: 37 [2019-12-07 17:40:00,299 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 17:40:00,300 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:40:00,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 17:40:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-12-07 17:40:00,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 17:40:00,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2019-12-07 17:40:00,302 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 35 transitions. Word has length 10 [2019-12-07 17:40:00,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:00,302 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 35 transitions. [2019-12-07 17:40:00,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:40:00,303 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 35 transitions. [2019-12-07 17:40:00,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:40:00,303 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:00,303 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:00,303 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:40:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:00,303 INFO L82 PathProgramCache]: Analyzing trace with hash -525836137, now seen corresponding path program 1 times [2019-12-07 17:40:00,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:00,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634456858] [2019-12-07 17:40:00,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:00,349 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634456858] [2019-12-07 17:40:00,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:00,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:40:00,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119297285] [2019-12-07 17:40:00,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:40:00,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:00,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:40:00,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:40:00,350 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. Second operand 4 states. [2019-12-07 17:40:00,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:00,362 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2019-12-07 17:40:00,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:40:00,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 17:40:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:00,363 INFO L225 Difference]: With dead ends: 28 [2019-12-07 17:40:00,363 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 17:40:00,364 INFO L630 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 [2019-12-07 17:40:00,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 17:40:00,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 17:40:00,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 17:40:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2019-12-07 17:40:00,366 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 11 [2019-12-07 17:40:00,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:00,366 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2019-12-07 17:40:00,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:40:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2019-12-07 17:40:00,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:40:00,367 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:00,367 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:00,367 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:40:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:00,367 INFO L82 PathProgramCache]: Analyzing trace with hash -577609367, now seen corresponding path program 2 times [2019-12-07 17:40:00,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:00,367 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87447414] [2019-12-07 17:40:00,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:00,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87447414] [2019-12-07 17:40:00,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:00,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:40:00,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912372430] [2019-12-07 17:40:00,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:40:00,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:00,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:40:00,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:40:00,421 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 5 states. [2019-12-07 17:40:00,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:00,441 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-12-07 17:40:00,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:40:00,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 17:40:00,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:00,442 INFO L225 Difference]: With dead ends: 23 [2019-12-07 17:40:00,442 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 17:40:00,443 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:40:00,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 17:40:00,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 17:40:00,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 17:40:00,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-07 17:40:00,445 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-12-07 17:40:00,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:00,445 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-07 17:40:00,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:40:00,445 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-07 17:40:00,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:40:00,445 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:00,445 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:00,446 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 17:40:00,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:00,446 INFO L82 PathProgramCache]: Analyzing trace with hash -577580537, now seen corresponding path program 3 times [2019-12-07 17:40:00,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:00,446 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047158929] [2019-12-07 17:40:00,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:00,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047158929] [2019-12-07 17:40:00,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:00,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:40:00,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669172701] [2019-12-07 17:40:00,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:40:00,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:00,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:40:00,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:40:00,493 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2019-12-07 17:40:00,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:00,508 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-07 17:40:00,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:40:00,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 17:40:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:00,509 INFO L225 Difference]: With dead ends: 13 [2019-12-07 17:40:00,509 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:40:00,509 INFO L630 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 [2019-12-07 17:40:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:40:00,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:40:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:40:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:40:00,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 17:40:00,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:00,510 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:40:00,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:40:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:40:00,510 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:40:00,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:40:00 BasicIcfg [2019-12-07 17:40:00,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:40:00,513 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:40:00,513 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:40:00,513 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:40:00,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:39:58" (3/4) ... [2019-12-07 17:40:00,516 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:40:00,520 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 17:40:00,520 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 17:40:00,520 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 17:40:00,524 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 17:40:00,524 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 17:40:00,524 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 17:40:00,557 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_77ef488b-be52-45ed-bbaf-bf634a736444/bin/uautomizer/witness.graphml [2019-12-07 17:40:00,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:40:00,558 INFO L168 Benchmark]: Toolchain (without parser) took 2401.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 937.2 MB in the beginning and 1.0 GB in the end (delta: -94.8 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:40:00,559 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:40:00,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 937.2 MB in the beginning and 1.1 GB in the end (delta: -159.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:40:00,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:40:00,560 INFO L168 Benchmark]: Boogie Preprocessor took 17.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:40:00,560 INFO L168 Benchmark]: RCFGBuilder took 245.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:40:00,561 INFO L168 Benchmark]: TraceAbstraction took 1700.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 34.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:40:00,561 INFO L168 Benchmark]: Witness Printer took 43.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:40:00,564 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 359.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 937.2 MB in the beginning and 1.1 GB in the end (delta: -159.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 245.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1700.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 34.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 11.5 GB. * Witness Printer took 43.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.9s, 63 ProgramPointsBefore, 22 ProgramPointsAfterwards, 54 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 232 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 478 CheckedPairsTotal, 47 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 63 SDslu, 54 SDs, 0 SdLazy, 68 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2570 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...