./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe028_pso.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_f027266a-c0a9-4b60-8f4b-15f5b02365f5/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/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 d59bd5d9792e4b6ae036e2d57d3b531c7de51151 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 13:16:30,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:16:30,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:16:30,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:16:30,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:16:30,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:16:30,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:16:30,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:16:30,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:16:30,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:16:30,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:16:30,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:16:30,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:16:30,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:16:30,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:16:30,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:16:30,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:16:30,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:16:30,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:16:30,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:16:30,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:16:30,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:16:30,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:16:30,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:16:30,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:16:30,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:16:30,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:16:30,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:16:30,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:16:30,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:16:30,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:16:30,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:16:30,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:16:30,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:16:30,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:16:30,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:16:30,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:16:30,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:16:30,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:16:30,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:16:30,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:16:30,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 13:16:30,546 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:16:30,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:16:30,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:16:30,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:16:30,547 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:16:30,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:16:30,547 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:16:30,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:16:30,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:16:30,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:16:30,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:16:30,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:16:30,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:16:30,548 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:16:30,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:16:30,548 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:16:30,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:16:30,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:16:30,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:16:30,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:16:30,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:16:30,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:16:30,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:16:30,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:16:30,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:16:30,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:16:30,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:16:30,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:16:30,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:16:30,550 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_f027266a-c0a9-4b60-8f4b-15f5b02365f5/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 -> d59bd5d9792e4b6ae036e2d57d3b531c7de51151 [2019-12-07 13:16:30,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:16:30,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:16:30,660 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:16:30,661 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:16:30,661 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:16:30,662 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe028_pso.oepc.i [2019-12-07 13:16:30,702 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/bin/uautomizer/data/3f804019f/c8b2a7ecbe29426fb9e9fa7e0b7047b3/FLAGfe9a94841 [2019-12-07 13:16:31,154 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:16:31,155 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/sv-benchmarks/c/pthread-wmm/safe028_pso.oepc.i [2019-12-07 13:16:31,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/bin/uautomizer/data/3f804019f/c8b2a7ecbe29426fb9e9fa7e0b7047b3/FLAGfe9a94841 [2019-12-07 13:16:31,175 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/bin/uautomizer/data/3f804019f/c8b2a7ecbe29426fb9e9fa7e0b7047b3 [2019-12-07 13:16:31,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:16:31,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:16:31,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:16:31,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:16:31,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:16:31,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:16:31" (1/1) ... [2019-12-07 13:16:31,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61040381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31, skipping insertion in model container [2019-12-07 13:16:31,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:16:31" (1/1) ... [2019-12-07 13:16:31,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:16:31,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:16:31,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:16:31,450 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:16:31,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:16:31,528 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:16:31,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31 WrapperNode [2019-12-07 13:16:31,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:16:31,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:16:31,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:16:31,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:16:31,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31" (1/1) ... [2019-12-07 13:16:31,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31" (1/1) ... [2019-12-07 13:16:31,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:16:31,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:16:31,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:16:31,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:16:31,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31" (1/1) ... [2019-12-07 13:16:31,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31" (1/1) ... [2019-12-07 13:16:31,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31" (1/1) ... [2019-12-07 13:16:31,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31" (1/1) ... [2019-12-07 13:16:31,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31" (1/1) ... [2019-12-07 13:16:31,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31" (1/1) ... [2019-12-07 13:16:31,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31" (1/1) ... [2019-12-07 13:16:31,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:16:31,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:16:31,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:16:31,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:16:31,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/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 13:16:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 13:16:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 13:16:31,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:16:31,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:16:31,628 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 13:16:31,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 13:16:31,628 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 13:16:31,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 13:16:31,628 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 13:16:31,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 13:16:31,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 13:16:31,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:16:31,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:16:31,630 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 13:16:31,808 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:16:31,808 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 13:16:31,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:16:31 BoogieIcfgContainer [2019-12-07 13:16:31,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:16:31,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:16:31,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:16:31,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:16:31,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:16:31" (1/3) ... [2019-12-07 13:16:31,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2603b3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:16:31, skipping insertion in model container [2019-12-07 13:16:31,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:16:31" (2/3) ... [2019-12-07 13:16:31,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2603b3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:16:31, skipping insertion in model container [2019-12-07 13:16:31,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:16:31" (3/3) ... [2019-12-07 13:16:31,814 INFO L109 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc.i [2019-12-07 13:16:31,820 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 13:16:31,820 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:16:31,824 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 13:16:31,824 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 13:16:31,841 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,841 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,842 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,842 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,842 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,842 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,842 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,842 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,842 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,843 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,843 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,843 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,843 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,843 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,843 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,843 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,844 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,844 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:16:31,859 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 13:16:31,873 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:16:31,873 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:16:31,873 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:16:31,873 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:16:31,873 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:16:31,873 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:16:31,873 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:16:31,873 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:16:31,881 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-07 13:16:31,882 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 13:16:31,910 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 13:16:31,910 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 13:16:31,915 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 13:16:31,916 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-07 13:16:31,926 INFO L134 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-07 13:16:31,926 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 13:16:31,927 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 13:16:31,929 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 13:16:31,930 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 13:16:32,622 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-12-07 13:16:32,875 INFO L206 etLargeBlockEncoding]: Checked pairs total: 453 [2019-12-07 13:16:32,876 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-07 13:16:32,878 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-07 13:16:32,886 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-07 13:16:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 13:16:32,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 13:16:32,892 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:16:32,892 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:16:32,892 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:16:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:16:32,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1890044162, now seen corresponding path program 1 times [2019-12-07 13:16:32,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:16:32,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578296136] [2019-12-07 13:16:32,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:16:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:16:33,095 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 13:16:33,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578296136] [2019-12-07 13:16:33,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:16:33,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:16:33,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492730146] [2019-12-07 13:16:33,099 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:16:33,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:16:33,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:16:33,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:16:33,110 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2019-12-07 13:16:33,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:16:33,148 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2019-12-07 13:16:33,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:16:33,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 13:16:33,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:16:33,157 INFO L225 Difference]: With dead ends: 51 [2019-12-07 13:16:33,157 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 13:16:33,158 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 13:16:33,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 13:16:33,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 13:16:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 13:16:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 13:16:33,183 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 13:16:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:16:33,183 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 13:16:33,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:16:33,183 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 13:16:33,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 13:16:33,184 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:16:33,184 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:16:33,184 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:16:33,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:16:33,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1011498488, now seen corresponding path program 1 times [2019-12-07 13:16:33,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:16:33,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801205080] [2019-12-07 13:16:33,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:16:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:16:33,251 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 13:16:33,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801205080] [2019-12-07 13:16:33,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:16:33,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:16:33,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331648996] [2019-12-07 13:16:33,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:16:33,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:16:33,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:16:33,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:16:33,254 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 5 states. [2019-12-07 13:16:33,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:16:33,285 INFO L93 Difference]: Finished difference Result 37 states and 62 transitions. [2019-12-07 13:16:33,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:16:33,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 13:16:33,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:16:33,285 INFO L225 Difference]: With dead ends: 37 [2019-12-07 13:16:33,286 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 13:16:33,286 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 13:16:33,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 13:16:33,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 13:16:33,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 13:16:33,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2019-12-07 13:16:33,290 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 9 [2019-12-07 13:16:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:16:33,290 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2019-12-07 13:16:33,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:16:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2019-12-07 13:16:33,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:16:33,291 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:16:33,291 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:16:33,291 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:16:33,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:16:33,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1288146976, now seen corresponding path program 1 times [2019-12-07 13:16:33,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:16:33,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536928220] [2019-12-07 13:16:33,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:16:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:16:33,350 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 13:16:33,350 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536928220] [2019-12-07 13:16:33,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:16:33,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:16:33,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527800270] [2019-12-07 13:16:33,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:16:33,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:16:33,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:16:33,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:16:33,351 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 6 states. [2019-12-07 13:16:33,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:16:33,394 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2019-12-07 13:16:33,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:16:33,394 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 13:16:33,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:16:33,395 INFO L225 Difference]: With dead ends: 28 [2019-12-07 13:16:33,395 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 13:16:33,395 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 13:16:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 13:16:33,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 13:16:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 13:16:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2019-12-07 13:16:33,397 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 10 [2019-12-07 13:16:33,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:16:33,398 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2019-12-07 13:16:33,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:16:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2019-12-07 13:16:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:16:33,398 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:16:33,398 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:16:33,398 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:16:33,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:16:33,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1277925028, now seen corresponding path program 1 times [2019-12-07 13:16:33,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:16:33,399 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457147596] [2019-12-07 13:16:33,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:16:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:16:33,436 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 13:16:33,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457147596] [2019-12-07 13:16:33,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:16:33,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:16:33,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441304485] [2019-12-07 13:16:33,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:16:33,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:16:33,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:16:33,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:16:33,437 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 4 states. [2019-12-07 13:16:33,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:16:33,447 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2019-12-07 13:16:33,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:16:33,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 13:16:33,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:16:33,448 INFO L225 Difference]: With dead ends: 27 [2019-12-07 13:16:33,448 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 13:16:33,448 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 13:16:33,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 13:16:33,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 13:16:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 13:16:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-07 13:16:33,450 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-12-07 13:16:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:16:33,450 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-07 13:16:33,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:16:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-07 13:16:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:16:33,450 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:16:33,450 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:16:33,451 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:16:33,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:16:33,451 INFO L82 PathProgramCache]: Analyzing trace with hash 184515028, now seen corresponding path program 2 times [2019-12-07 13:16:33,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:16:33,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122211756] [2019-12-07 13:16:33,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:16:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:16:33,488 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 13:16:33,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122211756] [2019-12-07 13:16:33,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:16:33,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:16:33,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732637832] [2019-12-07 13:16:33,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:16:33,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:16:33,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:16:33,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:16:33,489 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-07 13:16:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:16:33,503 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-12-07 13:16:33,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:16:33,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 13:16:33,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:16:33,503 INFO L225 Difference]: With dead ends: 18 [2019-12-07 13:16:33,503 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 13:16:33,504 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 13:16:33,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 13:16:33,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 13:16:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 13:16:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-07 13:16:33,505 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-12-07 13:16:33,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:16:33,505 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-07 13:16:33,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:16:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-07 13:16:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:16:33,506 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:16:33,506 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:16:33,506 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:16:33,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:16:33,506 INFO L82 PathProgramCache]: Analyzing trace with hash -641770818, now seen corresponding path program 3 times [2019-12-07 13:16:33,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:16:33,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950218489] [2019-12-07 13:16:33,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:16:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:16:33,555 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 13:16:33,555 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950218489] [2019-12-07 13:16:33,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:16:33,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:16:33,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311692929] [2019-12-07 13:16:33,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:16:33,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:16:33,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:16:33,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:16:33,556 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 5 states. [2019-12-07 13:16:33,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:16:33,565 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-07 13:16:33,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:16:33,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 13:16:33,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:16:33,566 INFO L225 Difference]: With dead ends: 11 [2019-12-07 13:16:33,566 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 13:16:33,566 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:16:33,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 13:16:33,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 13:16:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 13:16:33,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 13:16:33,567 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 13:16:33,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:16:33,567 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:16:33,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:16:33,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:16:33,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 13:16:33,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:16:33 BasicIcfg [2019-12-07 13:16:33,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:16:33,570 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:16:33,570 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:16:33,570 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:16:33,570 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:16:31" (3/4) ... [2019-12-07 13:16:33,573 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 13:16:33,577 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 13:16:33,577 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 13:16:33,577 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 13:16:33,580 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 13:16:33,580 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 13:16:33,580 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 13:16:33,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f027266a-c0a9-4b60-8f4b-15f5b02365f5/bin/uautomizer/witness.graphml [2019-12-07 13:16:33,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:16:33,611 INFO L168 Benchmark]: Toolchain (without parser) took 2433.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 934.0 MB in the beginning and 990.8 MB in the end (delta: -56.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:16:33,612 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:16:33,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -130.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-12-07 13:16:33,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:16:33,612 INFO L168 Benchmark]: Boogie Preprocessor took 18.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:16:33,613 INFO L168 Benchmark]: RCFGBuilder took 230.15 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:16:33,613 INFO L168 Benchmark]: TraceAbstraction took 1759.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 997.7 MB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:16:33,614 INFO L168 Benchmark]: Witness Printer took 40.27 ms. Allocated memory is still 1.1 GB. Free memory was 997.7 MB in the beginning and 990.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:16:33,615 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 349.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -130.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 230.15 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1759.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 997.7 MB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. * Witness Printer took 40.27 ms. Allocated memory is still 1.1 GB. Free memory was 997.7 MB in the beginning and 990.8 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 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, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 238 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 14 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 453 CheckedPairsTotal, 44 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: 60 SDtfs, 69 SDslu, 64 SDs, 0 SdLazy, 61 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 0 StatesRemovedByMinimization, 0 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, 1854 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...