./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037_power.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_a1f64c38-bbc0-4614-8d4a-9a532572319f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037_power.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/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 106693147f20b88bd9302cd5024e3f795b741c25 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 13:29:07,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:29:07,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:29:07,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:29:07,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:29:07,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:29:07,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:29:07,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:29:07,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:29:07,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:29:07,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:29:07,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:29:07,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:29:07,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:29:07,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:29:07,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:29:07,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:29:07,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:29:07,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:29:07,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:29:07,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:29:07,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:29:07,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:29:07,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:29:07,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:29:07,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:29:07,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:29:07,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:29:07,175 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:29:07,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:29:07,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:29:07,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:29:07,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:29:07,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:29:07,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:29:07,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:29:07,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:29:07,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:29:07,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:29:07,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:29:07,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:29:07,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 13:29:07,189 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:29:07,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:29:07,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:29:07,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:29:07,190 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:29:07,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:29:07,190 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:29:07,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:29:07,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:29:07,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:29:07,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:29:07,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:29:07,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:29:07,191 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:29:07,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:29:07,191 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:29:07,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:29:07,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:29:07,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:29:07,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:29:07,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:29:07,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:29:07,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:29:07,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:29:07,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:29:07,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:29:07,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:29:07,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:29:07,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:29:07,192 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_a1f64c38-bbc0-4614-8d4a-9a532572319f/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 -> 106693147f20b88bd9302cd5024e3f795b741c25 [2019-12-07 13:29:07,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:29:07,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:29:07,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:29:07,301 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:29:07,301 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:29:07,302 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe037_power.oepc.i [2019-12-07 13:29:07,338 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/bin/uautomizer/data/04b0a6971/c048c53d03ec47519308498d9fe5f329/FLAG133bf95d2 [2019-12-07 13:29:07,794 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:29:07,794 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/sv-benchmarks/c/pthread-wmm/safe037_power.oepc.i [2019-12-07 13:29:07,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/bin/uautomizer/data/04b0a6971/c048c53d03ec47519308498d9fe5f329/FLAG133bf95d2 [2019-12-07 13:29:07,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/bin/uautomizer/data/04b0a6971/c048c53d03ec47519308498d9fe5f329 [2019-12-07 13:29:07,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:29:07,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:29:07,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:29:07,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:29:07,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:29:07,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:29:07" (1/1) ... [2019-12-07 13:29:07,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4472bd18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:07, skipping insertion in model container [2019-12-07 13:29:07,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:29:07" (1/1) ... [2019-12-07 13:29:07,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:29:07,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:29:08,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:29:08,080 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:29:08,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:29:08,156 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:29:08,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:08 WrapperNode [2019-12-07 13:29:08,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:29:08,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:29:08,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:29:08,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:29:08,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:08" (1/1) ... [2019-12-07 13:29:08,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:08" (1/1) ... [2019-12-07 13:29:08,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:29:08,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:29:08,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:29:08,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:29:08,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:08" (1/1) ... [2019-12-07 13:29:08,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:08" (1/1) ... [2019-12-07 13:29:08,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:08" (1/1) ... [2019-12-07 13:29:08,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:08" (1/1) ... [2019-12-07 13:29:08,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:08" (1/1) ... [2019-12-07 13:29:08,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:08" (1/1) ... [2019-12-07 13:29:08,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:08" (1/1) ... [2019-12-07 13:29:08,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:29:08,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:29:08,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:29:08,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:29:08,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/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 13:29:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 13:29:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 13:29:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:29:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:29:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 13:29:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 13:29:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 13:29:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 13:29:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 13:29:08,247 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 13:29:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 13:29:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:29:08,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:29:08,248 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 13:29:08,427 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:29:08,427 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 13:29:08,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:29:08 BoogieIcfgContainer [2019-12-07 13:29:08,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:29:08,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:29:08,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:29:08,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:29:08,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:29:07" (1/3) ... [2019-12-07 13:29:08,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c162ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:29:08, skipping insertion in model container [2019-12-07 13:29:08,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:29:08" (2/3) ... [2019-12-07 13:29:08,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c162ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:29:08, skipping insertion in model container [2019-12-07 13:29:08,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:29:08" (3/3) ... [2019-12-07 13:29:08,432 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_power.oepc.i [2019-12-07 13:29:08,438 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 13:29:08,438 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:29:08,442 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 13:29:08,442 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 13:29:08,459 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,459 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,459 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,459 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,460 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,460 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,460 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,460 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,460 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,460 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,461 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,461 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,461 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,461 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,461 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,461 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,461 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,461 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:29:08,477 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 13:29:08,489 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:29:08,489 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:29:08,489 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:29:08,489 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:29:08,490 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:29:08,490 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:29:08,490 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:29:08,490 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:29:08,498 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-07 13:29:08,500 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-07 13:29:08,531 INFO L134 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-07 13:29:08,531 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 13:29:08,536 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 13:29:08,538 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-07 13:29:08,551 INFO L134 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-07 13:29:08,552 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 13:29:08,552 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 13:29:08,554 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 13:29:08,555 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 13:29:09,277 INFO L206 etLargeBlockEncoding]: Checked pairs total: 425 [2019-12-07 13:29:09,277 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-07 13:29:09,280 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-07 13:29:09,288 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-07 13:29:09,289 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-07 13:29:09,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 13:29:09,294 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:29:09,294 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:29:09,294 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:29:09,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:29:09,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1086085239, now seen corresponding path program 1 times [2019-12-07 13:29:09,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:29:09,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901790389] [2019-12-07 13:29:09,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:29:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:29:09,469 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 13:29:09,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901790389] [2019-12-07 13:29:09,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:29:09,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:29:09,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823552256] [2019-12-07 13:29:09,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:29:09,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:29:09,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:29:09,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:29:09,486 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-07 13:29:09,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:29:09,530 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-07 13:29:09,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:29:09,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 13:29:09,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:29:09,539 INFO L225 Difference]: With dead ends: 58 [2019-12-07 13:29:09,539 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 13:29:09,540 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 13:29:09,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 13:29:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 13:29:09,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 13:29:09,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 13:29:09,566 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 13:29:09,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:29:09,567 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 13:29:09,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:29:09,567 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 13:29:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 13:29:09,567 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:29:09,568 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:29:09,568 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:29:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:29:09,568 INFO L82 PathProgramCache]: Analyzing trace with hash -744608244, now seen corresponding path program 1 times [2019-12-07 13:29:09,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:29:09,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855437690] [2019-12-07 13:29:09,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:29:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:29:09,647 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 13:29:09,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855437690] [2019-12-07 13:29:09,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:29:09,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:29:09,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270191617] [2019-12-07 13:29:09,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:29:09,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:29:09,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:29:09,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:29:09,650 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 5 states. [2019-12-07 13:29:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:29:09,686 INFO L93 Difference]: Finished difference Result 37 states and 62 transitions. [2019-12-07 13:29:09,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:29:09,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 13:29:09,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:29:09,687 INFO L225 Difference]: With dead ends: 37 [2019-12-07 13:29:09,687 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 13:29:09,688 INFO L630 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 [2019-12-07 13:29:09,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 13:29:09,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 13:29:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 13:29:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2019-12-07 13:29:09,692 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 9 [2019-12-07 13:29:09,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:29:09,692 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2019-12-07 13:29:09,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:29:09,698 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2019-12-07 13:29:09,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:29:09,698 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:29:09,698 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:29:09,699 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:29:09,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:29:09,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1607968112, now seen corresponding path program 1 times [2019-12-07 13:29:09,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:29:09,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896932539] [2019-12-07 13:29:09,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:29:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:29:09,743 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 13:29:09,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896932539] [2019-12-07 13:29:09,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:29:09,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:29:09,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082784457] [2019-12-07 13:29:09,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:29:09,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:29:09,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:29:09,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:29:09,745 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 4 states. [2019-12-07 13:29:09,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:29:09,756 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2019-12-07 13:29:09,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:29:09,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 13:29:09,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:29:09,757 INFO L225 Difference]: With dead ends: 35 [2019-12-07 13:29:09,757 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 13:29:09,757 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 13:29:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 13:29:09,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-12-07 13:29:09,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 13:29:09,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 47 transitions. [2019-12-07 13:29:09,760 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 47 transitions. Word has length 10 [2019-12-07 13:29:09,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:29:09,760 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 47 transitions. [2019-12-07 13:29:09,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:29:09,761 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 47 transitions. [2019-12-07 13:29:09,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:29:09,761 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:29:09,761 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:29:09,761 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:29:09,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:29:09,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1607961385, now seen corresponding path program 1 times [2019-12-07 13:29:09,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:29:09,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209269679] [2019-12-07 13:29:09,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:29:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:29:09,814 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 13:29:09,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209269679] [2019-12-07 13:29:09,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:29:09,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:29:09,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146658478] [2019-12-07 13:29:09,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:29:09,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:29:09,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:29:09,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:29:09,815 INFO L87 Difference]: Start difference. First operand 30 states and 47 transitions. Second operand 6 states. [2019-12-07 13:29:09,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:29:09,860 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2019-12-07 13:29:09,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:29:09,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 13:29:09,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:29:09,861 INFO L225 Difference]: With dead ends: 28 [2019-12-07 13:29:09,861 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 13:29:09,861 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 13:29:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 13:29:09,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 13:29:09,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 13:29:09,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-07 13:29:09,863 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-12-07 13:29:09,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:29:09,863 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-07 13:29:09,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:29:09,863 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-07 13:29:09,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:29:09,864 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:29:09,864 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:29:09,864 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:29:09,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:29:09,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1627425577, now seen corresponding path program 1 times [2019-12-07 13:29:09,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:29:09,864 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248299695] [2019-12-07 13:29:09,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:29:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:29:09,915 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 13:29:09,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248299695] [2019-12-07 13:29:09,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:29:09,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:29:09,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414197005] [2019-12-07 13:29:09,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:29:09,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:29:09,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:29:09,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:29:09,917 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-07 13:29:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:29:09,935 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-12-07 13:29:09,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:29:09,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 13:29:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:29:09,936 INFO L225 Difference]: With dead ends: 19 [2019-12-07 13:29:09,936 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 13:29:09,936 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 13:29:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 13:29:09,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-12-07 13:29:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 13:29:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-07 13:29:09,939 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2019-12-07 13:29:09,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:29:09,939 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-07 13:29:09,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:29:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-12-07 13:29:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:29:09,940 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:29:09,940 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:29:09,940 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:29:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:29:09,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1627540897, now seen corresponding path program 2 times [2019-12-07 13:29:09,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:29:09,941 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15712552] [2019-12-07 13:29:09,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:29:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:29:09,984 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 13:29:09,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15712552] [2019-12-07 13:29:09,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:29:09,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:29:09,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486258648] [2019-12-07 13:29:09,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:29:09,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:29:09,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:29:09,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:29:09,985 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-12-07 13:29:09,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:29:10,000 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-12-07 13:29:10,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:29:10,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 13:29:10,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:29:10,000 INFO L225 Difference]: With dead ends: 14 [2019-12-07 13:29:10,000 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 13:29:10,001 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 13:29:10,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 13:29:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 13:29:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 13:29:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 13:29:10,001 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 13:29:10,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:29:10,001 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:29:10,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:29:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:29:10,001 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 13:29:10,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:29:10 BasicIcfg [2019-12-07 13:29:10,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:29:10,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:29:10,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:29:10,004 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:29:10,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:29:08" (3/4) ... [2019-12-07 13:29:10,007 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 13:29:10,011 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 13:29:10,011 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 13:29:10,011 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 13:29:10,015 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 13:29:10,015 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 13:29:10,016 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 13:29:10,047 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a1f64c38-bbc0-4614-8d4a-9a532572319f/bin/uautomizer/witness.graphml [2019-12-07 13:29:10,047 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:29:10,049 INFO L168 Benchmark]: Toolchain (without parser) took 2231.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 939.3 MB in the beginning and 1.0 GB in the end (delta: -101.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:29:10,049 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 957.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:29:10,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -141.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:29:10,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:29:10,050 INFO L168 Benchmark]: Boogie Preprocessor took 16.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:29:10,051 INFO L168 Benchmark]: RCFGBuilder took 223.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-12-07 13:29:10,051 INFO L168 Benchmark]: TraceAbstraction took 1575.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. [2019-12-07 13:29:10,052 INFO L168 Benchmark]: Witness Printer took 42.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:29:10,054 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 957.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 339.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -141.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.84 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 223.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1575.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. * Witness Printer took 42.74 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 64 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 236 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 10 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 425 CheckedPairsTotal, 45 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, 55 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 68 SDslu, 76 SDs, 0 SdLazy, 63 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1721 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...