./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_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_97a253ff-ed56-4809-bde4-332462c49f8f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/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 5b55cd39bd506cf3dcd548eec1f2cee49419f161 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 13:11:46,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:11:46,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:11:46,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:11:46,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:11:46,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:11:46,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:11:46,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:11:46,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:11:46,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:11:46,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:11:46,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:11:46,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:11:46,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:11:46,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:11:46,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:11:46,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:11:46,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:11:46,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:11:46,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:11:46,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:11:46,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:11:46,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:11:46,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:11:46,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:11:46,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:11:46,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:11:46,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:11:46,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:11:46,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:11:46,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:11:46,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:11:46,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:11:46,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:11:46,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:11:46,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:11:46,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:11:46,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:11:46,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:11:46,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:11:46,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:11:46,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 13:11:46,078 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:11:46,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:11:46,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:11:46,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:11:46,079 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:11:46,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:11:46,080 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:11:46,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:11:46,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:11:46,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:11:46,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:11:46,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:11:46,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:11:46,081 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:11:46,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:11:46,081 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:11:46,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:11:46,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:11:46,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:11:46,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:11:46,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:11:46,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:11:46,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:11:46,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:11:46,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:11:46,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:11:46,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:11:46,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:11:46,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:11:46,083 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_97a253ff-ed56-4809-bde4-332462c49f8f/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 -> 5b55cd39bd506cf3dcd548eec1f2cee49419f161 [2019-12-07 13:11:46,182 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:11:46,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:11:46,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:11:46,194 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:11:46,195 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:11:46,195 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2019-12-07 13:11:46,233 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/bin/uautomizer/data/7f8fa15c6/41a7c64db85843b387028b5346c35e0c/FLAG3b8eb67a9 [2019-12-07 13:11:46,671 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:11:46,671 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2019-12-07 13:11:46,681 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/bin/uautomizer/data/7f8fa15c6/41a7c64db85843b387028b5346c35e0c/FLAG3b8eb67a9 [2019-12-07 13:11:47,012 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/bin/uautomizer/data/7f8fa15c6/41a7c64db85843b387028b5346c35e0c [2019-12-07 13:11:47,014 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:11:47,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:11:47,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:11:47,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:11:47,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:11:47,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:11:47" (1/1) ... [2019-12-07 13:11:47,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8b58c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47, skipping insertion in model container [2019-12-07 13:11:47,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:11:47" (1/1) ... [2019-12-07 13:11:47,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:11:47,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:11:47,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:11:47,289 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:11:47,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:11:47,365 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:11:47,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47 WrapperNode [2019-12-07 13:11:47,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:11:47,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:11:47,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:11:47,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:11:47,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47" (1/1) ... [2019-12-07 13:11:47,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47" (1/1) ... [2019-12-07 13:11:47,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:11:47,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:11:47,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:11:47,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:11:47,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47" (1/1) ... [2019-12-07 13:11:47,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47" (1/1) ... [2019-12-07 13:11:47,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47" (1/1) ... [2019-12-07 13:11:47,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47" (1/1) ... [2019-12-07 13:11:47,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47" (1/1) ... [2019-12-07 13:11:47,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47" (1/1) ... [2019-12-07 13:11:47,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47" (1/1) ... [2019-12-07 13:11:47,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:11:47,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:11:47,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:11:47,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:11:47,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/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 13:11:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 13:11:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 13:11:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:11:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:11:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 13:11:47,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 13:11:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 13:11:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 13:11:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 13:11:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 13:11:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-12-07 13:11:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-12-07 13:11:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 13:11:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:11:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:11:47,460 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 13:11:47,636 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:11:47,636 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 13:11:47,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:11:47 BoogieIcfgContainer [2019-12-07 13:11:47,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:11:47,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:11:47,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:11:47,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:11:47,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:11:47" (1/3) ... [2019-12-07 13:11:47,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379d4b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:11:47, skipping insertion in model container [2019-12-07 13:11:47,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:11:47" (2/3) ... [2019-12-07 13:11:47,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379d4b09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:11:47, skipping insertion in model container [2019-12-07 13:11:47,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:11:47" (3/3) ... [2019-12-07 13:11:47,643 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2019-12-07 13:11:47,649 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 13:11:47,649 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:11:47,654 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 13:11:47,654 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 13:11:47,673 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,673 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,673 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,673 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,673 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,674 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,674 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,674 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,674 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,674 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,674 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,674 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,675 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,675 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,675 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,675 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,675 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,675 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,675 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,675 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,675 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,676 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,676 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,676 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:11:47,689 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-07 13:11:47,701 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:11:47,701 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:11:47,702 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:11:47,702 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:11:47,702 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:11:47,702 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:11:47,702 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:11:47,702 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:11:47,710 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 63 transitions [2019-12-07 13:11:47,711 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions [2019-12-07 13:11:47,739 INFO L134 PetriNetUnfolder]: 1/59 cut-off events. [2019-12-07 13:11:47,739 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 13:11:47,743 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/69 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 13:11:47,745 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions [2019-12-07 13:11:47,756 INFO L134 PetriNetUnfolder]: 1/59 cut-off events. [2019-12-07 13:11:47,756 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 13:11:47,757 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/69 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 13:11:47,758 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-12-07 13:11:47,759 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 13:11:48,679 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-12-07 13:11:48,952 INFO L206 etLargeBlockEncoding]: Checked pairs total: 749 [2019-12-07 13:11:48,952 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2019-12-07 13:11:48,954 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 19 transitions [2019-12-07 13:11:48,964 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 94 states. [2019-12-07 13:11:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2019-12-07 13:11:48,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:11:48,970 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:11:48,970 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:11:48,970 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:11:48,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:11:48,974 INFO L82 PathProgramCache]: Analyzing trace with hash 364087523, now seen corresponding path program 1 times [2019-12-07 13:11:48,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:11:48,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152117260] [2019-12-07 13:11:48,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:11:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:11:49,141 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 13:11:49,141 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152117260] [2019-12-07 13:11:49,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:11:49,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:11:49,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483107701] [2019-12-07 13:11:49,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:11:49,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:11:49,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:11:49,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:11:49,160 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2019-12-07 13:11:49,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:11:49,182 INFO L93 Difference]: Finished difference Result 86 states and 212 transitions. [2019-12-07 13:11:49,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:11:49,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 13:11:49,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:11:49,191 INFO L225 Difference]: With dead ends: 86 [2019-12-07 13:11:49,191 INFO L226 Difference]: Without dead ends: 70 [2019-12-07 13:11:49,192 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:11:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-12-07 13:11:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2019-12-07 13:11:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-12-07 13:11:49,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 164 transitions. [2019-12-07 13:11:49,219 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 164 transitions. Word has length 10 [2019-12-07 13:11:49,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:11:49,220 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 164 transitions. [2019-12-07 13:11:49,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:11:49,220 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 164 transitions. [2019-12-07 13:11:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:11:49,221 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:11:49,221 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:11:49,221 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:11:49,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:11:49,221 INFO L82 PathProgramCache]: Analyzing trace with hash -662886856, now seen corresponding path program 1 times [2019-12-07 13:11:49,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:11:49,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040912009] [2019-12-07 13:11:49,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:11:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:11:49,293 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 13:11:49,293 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040912009] [2019-12-07 13:11:49,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:11:49,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:11:49,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565762872] [2019-12-07 13:11:49,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:11:49,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:11:49,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:11:49,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:11:49,295 INFO L87 Difference]: Start difference. First operand 70 states and 164 transitions. Second operand 4 states. [2019-12-07 13:11:49,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:11:49,317 INFO L93 Difference]: Finished difference Result 89 states and 189 transitions. [2019-12-07 13:11:49,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:11:49,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 13:11:49,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:11:49,319 INFO L225 Difference]: With dead ends: 89 [2019-12-07 13:11:49,319 INFO L226 Difference]: Without dead ends: 79 [2019-12-07 13:11:49,320 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:11:49,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-12-07 13:11:49,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2019-12-07 13:11:49,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-12-07 13:11:49,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 149 transitions. [2019-12-07 13:11:49,327 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 149 transitions. Word has length 11 [2019-12-07 13:11:49,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:11:49,328 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 149 transitions. [2019-12-07 13:11:49,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:11:49,328 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 149 transitions. [2019-12-07 13:11:49,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 13:11:49,329 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:11:49,329 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:11:49,329 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:11:49,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:11:49,330 INFO L82 PathProgramCache]: Analyzing trace with hash 925343788, now seen corresponding path program 1 times [2019-12-07 13:11:49,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:11:49,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596739740] [2019-12-07 13:11:49,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:11:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:11:49,409 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 13:11:49,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596739740] [2019-12-07 13:11:49,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:11:49,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:11:49,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278536162] [2019-12-07 13:11:49,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:11:49,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:11:49,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:11:49,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:11:49,410 INFO L87 Difference]: Start difference. First operand 71 states and 149 transitions. Second operand 6 states. [2019-12-07 13:11:49,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:11:49,454 INFO L93 Difference]: Finished difference Result 76 states and 150 transitions. [2019-12-07 13:11:49,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:11:49,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-07 13:11:49,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:11:49,455 INFO L225 Difference]: With dead ends: 76 [2019-12-07 13:11:49,456 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 13:11:49,456 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:11:49,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 13:11:49,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2019-12-07 13:11:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 13:11:49,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 109 transitions. [2019-12-07 13:11:49,460 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 109 transitions. Word has length 12 [2019-12-07 13:11:49,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:11:49,460 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 109 transitions. [2019-12-07 13:11:49,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:11:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 109 transitions. [2019-12-07 13:11:49,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 13:11:49,461 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:11:49,461 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:11:49,461 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:11:49,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:11:49,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1348878632, now seen corresponding path program 1 times [2019-12-07 13:11:49,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:11:49,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755590744] [2019-12-07 13:11:49,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:11:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:11:49,515 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 13:11:49,516 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755590744] [2019-12-07 13:11:49,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:11:49,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 13:11:49,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425582881] [2019-12-07 13:11:49,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 13:11:49,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:11:49,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 13:11:49,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 13:11:49,517 INFO L87 Difference]: Start difference. First operand 58 states and 109 transitions. Second operand 7 states. [2019-12-07 13:11:49,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:11:49,575 INFO L93 Difference]: Finished difference Result 56 states and 103 transitions. [2019-12-07 13:11:49,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:11:49,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-12-07 13:11:49,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:11:49,576 INFO L225 Difference]: With dead ends: 56 [2019-12-07 13:11:49,576 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 13:11:49,576 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-12-07 13:11:49,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 13:11:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2019-12-07 13:11:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 13:11:49,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 88 transitions. [2019-12-07 13:11:49,580 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 88 transitions. Word has length 13 [2019-12-07 13:11:49,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:11:49,580 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 88 transitions. [2019-12-07 13:11:49,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 13:11:49,580 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 88 transitions. [2019-12-07 13:11:49,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:11:49,580 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:11:49,581 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:11:49,581 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:11:49,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:11:49,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1134517083, now seen corresponding path program 1 times [2019-12-07 13:11:49,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:11:49,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152373257] [2019-12-07 13:11:49,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:11:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:11:49,626 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 13:11:49,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152373257] [2019-12-07 13:11:49,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:11:49,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:11:49,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665954724] [2019-12-07 13:11:49,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:11:49,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:11:49,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:11:49,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:11:49,628 INFO L87 Difference]: Start difference. First operand 45 states and 88 transitions. Second operand 5 states. [2019-12-07 13:11:49,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:11:49,647 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2019-12-07 13:11:49,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:11:49,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 13:11:49,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:11:49,648 INFO L225 Difference]: With dead ends: 59 [2019-12-07 13:11:49,648 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 13:11:49,648 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:11:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 13:11:49,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2019-12-07 13:11:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 13:11:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 54 transitions. [2019-12-07 13:11:49,652 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 54 transitions. Word has length 14 [2019-12-07 13:11:49,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:11:49,652 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 54 transitions. [2019-12-07 13:11:49,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:11:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 54 transitions. [2019-12-07 13:11:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:11:49,653 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:11:49,653 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:11:49,653 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:11:49,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:11:49,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1937154369, now seen corresponding path program 2 times [2019-12-07 13:11:49,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:11:49,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752449522] [2019-12-07 13:11:49,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:11:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:11:49,705 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 13:11:49,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752449522] [2019-12-07 13:11:49,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:11:49,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:11:49,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91393421] [2019-12-07 13:11:49,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:11:49,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:11:49,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:11:49,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:11:49,706 INFO L87 Difference]: Start difference. First operand 33 states and 54 transitions. Second operand 5 states. [2019-12-07 13:11:49,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:11:49,726 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2019-12-07 13:11:49,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:11:49,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 13:11:49,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:11:49,727 INFO L225 Difference]: With dead ends: 42 [2019-12-07 13:11:49,727 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 13:11:49,727 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:11:49,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 13:11:49,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 13:11:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 13:11:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2019-12-07 13:11:49,730 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 14 [2019-12-07 13:11:49,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:11:49,730 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-12-07 13:11:49,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:11:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2019-12-07 13:11:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:11:49,731 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:11:49,731 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:11:49,731 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:11:49,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:11:49,731 INFO L82 PathProgramCache]: Analyzing trace with hash 562302313, now seen corresponding path program 3 times [2019-12-07 13:11:49,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:11:49,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935478856] [2019-12-07 13:11:49,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:11:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:11:49,774 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 13:11:49,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935478856] [2019-12-07 13:11:49,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:11:49,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:11:49,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853607707] [2019-12-07 13:11:49,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:11:49,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:11:49,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:11:49,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:11:49,776 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand 4 states. [2019-12-07 13:11:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:11:49,788 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2019-12-07 13:11:49,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:11:49,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 13:11:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:11:49,789 INFO L225 Difference]: With dead ends: 28 [2019-12-07 13:11:49,789 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 13:11:49,790 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:11:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 13:11:49,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 13:11:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 13:11:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2019-12-07 13:11:49,792 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 14 [2019-12-07 13:11:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:11:49,792 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-12-07 13:11:49,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:11:49,793 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2019-12-07 13:11:49,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:11:49,793 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:11:49,793 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:11:49,793 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:11:49,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:11:49,794 INFO L82 PathProgramCache]: Analyzing trace with hash 586461853, now seen corresponding path program 4 times [2019-12-07 13:11:49,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:11:49,794 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241561933] [2019-12-07 13:11:49,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:11:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:11:49,824 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 13:11:49,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241561933] [2019-12-07 13:11:49,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:11:49,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:11:49,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446711948] [2019-12-07 13:11:49,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:11:49,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:11:49,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:11:49,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:11:49,825 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand 4 states. [2019-12-07 13:11:49,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:11:49,834 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2019-12-07 13:11:49,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:11:49,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 13:11:49,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:11:49,834 INFO L225 Difference]: With dead ends: 22 [2019-12-07 13:11:49,835 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 13:11:49,835 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 13:11:49,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 13:11:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 13:11:49,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 13:11:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 13:11:49,835 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-12-07 13:11:49,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:11:49,835 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:11:49,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:11:49,836 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:11:49,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 13:11:49,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:11:49 BasicIcfg [2019-12-07 13:11:49,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:11:49,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:11:49,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:11:49,839 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:11:49,839 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:11:47" (3/4) ... [2019-12-07 13:11:49,841 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 13:11:49,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 13:11:49,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 13:11:49,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 13:11:49,846 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-12-07 13:11:49,849 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 13:11:49,849 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 13:11:49,850 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 13:11:49,879 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_97a253ff-ed56-4809-bde4-332462c49f8f/bin/uautomizer/witness.graphml [2019-12-07 13:11:49,879 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:11:49,880 INFO L168 Benchmark]: Toolchain (without parser) took 2865.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 932.6 MB in the beginning and 895.2 MB in the end (delta: 37.4 MB). Peak memory consumption was 137.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:11:49,881 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:11:49,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -133.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:11:49,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.67 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 13:11:49,882 INFO L168 Benchmark]: Boogie Preprocessor took 18.50 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:11:49,882 INFO L168 Benchmark]: RCFGBuilder took 220.80 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:11:49,882 INFO L168 Benchmark]: TraceAbstraction took 2200.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 902.0 MB in the end (delta: 136.9 MB). Peak memory consumption was 136.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:11:49,883 INFO L168 Benchmark]: Witness Printer took 40.66 ms. Allocated memory is still 1.1 GB. Free memory was 902.0 MB in the beginning and 895.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 13:11:49,884 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 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 350.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.6 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -133.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.67 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 18.50 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 220.80 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2200.37 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 902.0 MB in the end (delta: 136.9 MB). Peak memory consumption was 136.9 MB. Max. memory is 11.5 GB. * Witness Printer took 40.66 ms. Allocated memory is still 1.1 GB. Free memory was 902.0 MB in the beginning and 895.2 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 75 ProgramPointsBefore, 27 ProgramPointsAfterwards, 63 TransitionsBefore, 19 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 363 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 749 CheckedPairsTotal, 49 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 5 procedures, 63 locations, 1 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 134 SDslu, 108 SDs, 0 SdLazy, 97 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred 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, 8 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 5183 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...