./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe020_tso.opt.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_f06b5d1a-2107-462b-a59b-d1ed469dc516/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe020_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/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 292c8310df31104212c78575bcccd1c085aba02b ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:54:03,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:54:03,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:54:03,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:54:03,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:54:03,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:54:03,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:54:03,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:54:03,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:54:03,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:54:03,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:54:03,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:54:03,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:54:03,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:54:03,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:54:03,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:54:03,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:54:03,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:54:03,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:54:03,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:54:03,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:54:03,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:54:03,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:54:03,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:54:03,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:54:03,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:54:03,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:54:03,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:54:03,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:54:03,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:54:03,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:54:03,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:54:03,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:54:03,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:54:03,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:54:03,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:54:03,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:54:03,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:54:03,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:54:03,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:54:03,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:54:03,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:54:03,061 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:54:03,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:54:03,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:54:03,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:54:03,062 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:54:03,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:54:03,063 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:54:03,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:54:03,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:54:03,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:54:03,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:54:03,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:54:03,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:54:03,064 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:54:03,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:54:03,064 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:54:03,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:54:03,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:54:03,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:54:03,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:54:03,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:54:03,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:54:03,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:54:03,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:54:03,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:54:03,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:54:03,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:54:03,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:54:03,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:54:03,066 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_f06b5d1a-2107-462b-a59b-d1ed469dc516/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 -> 292c8310df31104212c78575bcccd1c085aba02b [2019-12-07 18:54:03,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:54:03,171 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:54:03,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:54:03,176 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:54:03,176 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:54:03,176 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe020_tso.opt.i [2019-12-07 18:54:03,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/bin/uautomizer/data/6b436ed7c/ce20fd51edc14043bb4a3f4d44f25196/FLAG4e944b11d [2019-12-07 18:54:03,672 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:54:03,672 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/sv-benchmarks/c/pthread-wmm/safe020_tso.opt.i [2019-12-07 18:54:03,682 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/bin/uautomizer/data/6b436ed7c/ce20fd51edc14043bb4a3f4d44f25196/FLAG4e944b11d [2019-12-07 18:54:03,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/bin/uautomizer/data/6b436ed7c/ce20fd51edc14043bb4a3f4d44f25196 [2019-12-07 18:54:03,693 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:54:03,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:54:03,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:54:03,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:54:03,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:54:03,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:54:03" (1/1) ... [2019-12-07 18:54:03,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5037a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:03, skipping insertion in model container [2019-12-07 18:54:03,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:54:03" (1/1) ... [2019-12-07 18:54:03,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:54:03,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:54:03,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:54:03,982 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:54:04,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:54:04,055 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:54:04,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:04 WrapperNode [2019-12-07 18:54:04,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:54:04,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:54:04,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:54:04,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:54:04,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:04" (1/1) ... [2019-12-07 18:54:04,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:04" (1/1) ... [2019-12-07 18:54:04,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:54:04,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:54:04,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:54:04,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:54:04,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:04" (1/1) ... [2019-12-07 18:54:04,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:04" (1/1) ... [2019-12-07 18:54:04,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:04" (1/1) ... [2019-12-07 18:54:04,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:04" (1/1) ... [2019-12-07 18:54:04,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:04" (1/1) ... [2019-12-07 18:54:04,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:04" (1/1) ... [2019-12-07 18:54:04,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:04" (1/1) ... [2019-12-07 18:54:04,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:54:04,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:54:04,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:54:04,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:54:04,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/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 18:54:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:54:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 18:54:04,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:54:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:54:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 18:54:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 18:54:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 18:54:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 18:54:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 18:54:04,152 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 18:54:04,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 18:54:04,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:54:04,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:54:04,154 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 18:54:04,330 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:54:04,330 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 18:54:04,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:54:04 BoogieIcfgContainer [2019-12-07 18:54:04,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:54:04,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:54:04,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:54:04,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:54:04,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:54:03" (1/3) ... [2019-12-07 18:54:04,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ded786e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:54:04, skipping insertion in model container [2019-12-07 18:54:04,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:54:04" (2/3) ... [2019-12-07 18:54:04,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ded786e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:54:04, skipping insertion in model container [2019-12-07 18:54:04,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:54:04" (3/3) ... [2019-12-07 18:54:04,336 INFO L109 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2019-12-07 18:54:04,342 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 18:54:04,342 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:54:04,346 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:54:04,347 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 18:54:04,366 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,366 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,366 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,367 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,367 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,367 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,367 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,368 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,368 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,368 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,368 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,368 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,369 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,369 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,369 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,369 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,369 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,370 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:54:04,387 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 18:54:04,398 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:54:04,399 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:54:04,399 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:54:04,399 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:54:04,399 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:54:04,399 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:54:04,399 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:54:04,399 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:54:04,407 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-07 18:54:04,408 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-07 18:54:04,433 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-07 18:54:04,434 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:54:04,438 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 18:54:04,440 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-07 18:54:04,450 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-07 18:54:04,450 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:54:04,451 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 18:54:04,452 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 18:54:04,453 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 18:54:05,206 INFO L206 etLargeBlockEncoding]: Checked pairs total: 479 [2019-12-07 18:54:05,206 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-07 18:54:05,209 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-07 18:54:05,216 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-07 18:54:05,218 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 18:54:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 18:54:05,223 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:54:05,223 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:54:05,223 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:54:05,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:54:05,227 INFO L82 PathProgramCache]: Analyzing trace with hash 492740166, now seen corresponding path program 1 times [2019-12-07 18:54:05,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:54:05,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855790655] [2019-12-07 18:54:05,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:54:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:54:05,399 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 18:54:05,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855790655] [2019-12-07 18:54:05,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:54:05,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 18:54:05,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060238464] [2019-12-07 18:54:05,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:54:05,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:54:05,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:54:05,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:54:05,415 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-07 18:54:05,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:54:05,437 INFO L93 Difference]: Finished difference Result 52 states and 95 transitions. [2019-12-07 18:54:05,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:54:05,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 18:54:05,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:54:05,445 INFO L225 Difference]: With dead ends: 52 [2019-12-07 18:54:05,445 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 18:54:05,446 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 18:54:05,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 18:54:05,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2019-12-07 18:54:05,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 18:54:05,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 60 transitions. [2019-12-07 18:54:05,470 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 60 transitions. Word has length 8 [2019-12-07 18:54:05,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:54:05,470 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 60 transitions. [2019-12-07 18:54:05,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:54:05,471 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 60 transitions. [2019-12-07 18:54:05,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 18:54:05,471 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:54:05,471 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:54:05,472 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:54:05,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:54:05,472 INFO L82 PathProgramCache]: Analyzing trace with hash 709143484, now seen corresponding path program 1 times [2019-12-07 18:54:05,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:54:05,472 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538537156] [2019-12-07 18:54:05,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:54:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:54:05,551 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 18:54:05,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538537156] [2019-12-07 18:54:05,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:54:05,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:54:05,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120374102] [2019-12-07 18:54:05,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:54:05,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:54:05,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:54:05,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:54:05,553 INFO L87 Difference]: Start difference. First operand 34 states and 60 transitions. Second operand 5 states. [2019-12-07 18:54:05,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:54:05,597 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2019-12-07 18:54:05,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:54:05,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 18:54:05,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:54:05,598 INFO L225 Difference]: With dead ends: 37 [2019-12-07 18:54:05,598 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 18:54:05,599 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 18:54:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 18:54:05,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 18:54:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 18:54:05,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 45 transitions. [2019-12-07 18:54:05,602 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 45 transitions. Word has length 9 [2019-12-07 18:54:05,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:54:05,603 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 45 transitions. [2019-12-07 18:54:05,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:54:05,603 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 45 transitions. [2019-12-07 18:54:05,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:54:05,603 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:54:05,603 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:54:05,603 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:54:05,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:54:05,604 INFO L82 PathProgramCache]: Analyzing trace with hash 520462639, now seen corresponding path program 1 times [2019-12-07 18:54:05,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:54:05,604 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523667874] [2019-12-07 18:54:05,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:54:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:54:05,668 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 18:54:05,669 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523667874] [2019-12-07 18:54:05,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:54:05,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:54:05,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413710309] [2019-12-07 18:54:05,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:54:05,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:54:05,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:54:05,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:54:05,670 INFO L87 Difference]: Start difference. First operand 29 states and 45 transitions. Second operand 6 states. [2019-12-07 18:54:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:54:05,712 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2019-12-07 18:54:05,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:54:05,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 18:54:05,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:54:05,713 INFO L225 Difference]: With dead ends: 28 [2019-12-07 18:54:05,713 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 18:54:05,713 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 18:54:05,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 18:54:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 18:54:05,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 18:54:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-07 18:54:05,716 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-12-07 18:54:05,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:54:05,716 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-07 18:54:05,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:54:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-07 18:54:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:54:05,717 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:54:05,717 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:54:05,717 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:54:05,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:54:05,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1824813225, now seen corresponding path program 1 times [2019-12-07 18:54:05,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:54:05,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307999060] [2019-12-07 18:54:05,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:54:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:54:05,760 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 18:54:05,760 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307999060] [2019-12-07 18:54:05,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:54:05,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:54:05,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786949520] [2019-12-07 18:54:05,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:54:05,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:54:05,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:54:05,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:54:05,762 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-07 18:54:05,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:54:05,777 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-12-07 18:54:05,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:54:05,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 18:54:05,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:54:05,777 INFO L225 Difference]: With dead ends: 18 [2019-12-07 18:54:05,778 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 18:54:05,778 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 18:54:05,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 18:54:05,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 18:54:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 18:54:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-07 18:54:05,779 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-12-07 18:54:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:54:05,779 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-07 18:54:05,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:54:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-07 18:54:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:54:05,780 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:54:05,780 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:54:05,780 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:54:05,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:54:05,780 INFO L82 PathProgramCache]: Analyzing trace with hash -921352333, now seen corresponding path program 2 times [2019-12-07 18:54:05,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:54:05,781 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072625520] [2019-12-07 18:54:05,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:54:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:54:05,818 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 18:54:05,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072625520] [2019-12-07 18:54:05,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:54:05,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:54:05,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374117420] [2019-12-07 18:54:05,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:54:05,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:54:05,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:54:05,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:54:05,820 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 4 states. [2019-12-07 18:54:05,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:54:05,830 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-07 18:54:05,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:54:05,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 18:54:05,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:54:05,831 INFO L225 Difference]: With dead ends: 11 [2019-12-07 18:54:05,831 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:54:05,831 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 18:54:05,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:54:05,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:54:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:54:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:54:05,832 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 18:54:05,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:54:05,832 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:54:05,832 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:54:05,832 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:54:05,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:54:05,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:54:05 BasicIcfg [2019-12-07 18:54:05,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:54:05,835 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:54:05,835 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:54:05,835 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:54:05,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:54:04" (3/4) ... [2019-12-07 18:54:05,838 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:54:05,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 18:54:05,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 18:54:05,843 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 18:54:05,846 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 18:54:05,846 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 18:54:05,846 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 18:54:05,874 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f06b5d1a-2107-462b-a59b-d1ed469dc516/bin/uautomizer/witness.graphml [2019-12-07 18:54:05,874 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:54:05,875 INFO L168 Benchmark]: Toolchain (without parser) took 2180.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -116.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:54:05,876 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:54:05,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -139.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:54:05,876 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.18 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 18:54:05,876 INFO L168 Benchmark]: Boogie Preprocessor took 17.09 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 18:54:05,877 INFO L168 Benchmark]: RCFGBuilder took 227.59 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:54:05,877 INFO L168 Benchmark]: TraceAbstraction took 1502.92 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: -6.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:54:05,877 INFO L168 Benchmark]: Witness Printer took 38.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:54:05,879 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 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 361.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.3 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -139.6 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.18 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 17.09 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 227.59 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1502.92 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: -6.5 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 38.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 244 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 3 SemBasedMoverChecksPositive, 15 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 479 CheckedPairsTotal, 45 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 50 SDslu, 42 SDs, 0 SdLazy, 46 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 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, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1728 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...