./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe033_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe033_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d47a97e57221f6ec28810b63cefc5be343fb9d58 .......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 03:01:28,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 03:01:28,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 03:01:28,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 03:01:28,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 03:01:28,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 03:01:28,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 03:01:28,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 03:01:28,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 03:01:28,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 03:01:28,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 03:01:28,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 03:01:28,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 03:01:28,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 03:01:28,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 03:01:28,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 03:01:28,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 03:01:28,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 03:01:28,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 03:01:28,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 03:01:28,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 03:01:28,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 03:01:28,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 03:01:28,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 03:01:28,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 03:01:28,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 03:01:28,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 03:01:28,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 03:01:28,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 03:01:28,151 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 03:01:28,152 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 03:01:28,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 03:01:28,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 03:01:28,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 03:01:28,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 03:01:28,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 03:01:28,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 03:01:28,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 03:01:28,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 03:01:28,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 03:01:28,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 03:01:28,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 03:01:28,184 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 03:01:28,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 03:01:28,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 03:01:28,185 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 03:01:28,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 03:01:28,185 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 03:01:28,185 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 03:01:28,185 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 03:01:28,186 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 03:01:28,186 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 03:01:28,186 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 03:01:28,186 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 03:01:28,186 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 03:01:28,186 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 03:01:28,187 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 03:01:28,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 03:01:28,187 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 03:01:28,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 03:01:28,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 03:01:28,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 03:01:28,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 03:01:28,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 03:01:28,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 03:01:28,189 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 03:01:28,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 03:01:28,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 03:01:28,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 03:01:28,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 03:01:28,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 03:01:28,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 03:01:28,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 03:01:28,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 03:01:28,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 03:01:28,190 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 03:01:28,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 03:01:28,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 03:01:28,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 03:01:28,191 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan 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 -> Taipan 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 -> d47a97e57221f6ec28810b63cefc5be343fb9d58 [2019-11-26 03:01:28,378 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 03:01:28,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 03:01:28,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 03:01:28,396 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 03:01:28,396 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 03:01:28,397 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe033_tso.opt.i [2019-11-26 03:01:28,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan/data/c76338900/f656f5ccaa4941278dd0911dcf89c430/FLAGd8c87e284 [2019-11-26 03:01:28,980 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 03:01:28,983 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/sv-benchmarks/c/pthread-wmm/safe033_tso.opt.i [2019-11-26 03:01:29,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan/data/c76338900/f656f5ccaa4941278dd0911dcf89c430/FLAGd8c87e284 [2019-11-26 03:01:29,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan/data/c76338900/f656f5ccaa4941278dd0911dcf89c430 [2019-11-26 03:01:29,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 03:01:29,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 03:01:29,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 03:01:29,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 03:01:29,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 03:01:29,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:01:29" (1/1) ... [2019-11-26 03:01:29,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f7d17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29, skipping insertion in model container [2019-11-26 03:01:29,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:01:29" (1/1) ... [2019-11-26 03:01:29,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 03:01:29,372 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 03:01:29,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:01:29,762 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 03:01:29,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:01:29,909 INFO L205 MainTranslator]: Completed translation [2019-11-26 03:01:29,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29 WrapperNode [2019-11-26 03:01:29,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 03:01:29,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 03:01:29,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 03:01:29,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 03:01:29,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29" (1/1) ... [2019-11-26 03:01:29,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29" (1/1) ... [2019-11-26 03:01:29,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 03:01:29,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 03:01:29,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 03:01:29,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 03:01:29,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29" (1/1) ... [2019-11-26 03:01:29,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29" (1/1) ... [2019-11-26 03:01:29,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29" (1/1) ... [2019-11-26 03:01:29,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29" (1/1) ... [2019-11-26 03:01:29,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29" (1/1) ... [2019-11-26 03:01:29,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29" (1/1) ... [2019-11-26 03:01:29,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29" (1/1) ... [2019-11-26 03:01:29,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 03:01:29,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 03:01:29,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 03:01:29,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 03:01:29,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan/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 [2019-11-26 03:01:30,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 03:01:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 03:01:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 03:01:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 03:01:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-26 03:01:30,084 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-26 03:01:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-26 03:01:30,085 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-26 03:01:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 03:01:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 03:01:30,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 03:01:30,089 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 03:01:30,493 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 03:01:30,493 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 03:01:30,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:01:30 BoogieIcfgContainer [2019-11-26 03:01:30,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 03:01:30,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 03:01:30,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 03:01:30,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 03:01:30,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 03:01:29" (1/3) ... [2019-11-26 03:01:30,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bc475d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:01:30, skipping insertion in model container [2019-11-26 03:01:30,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:29" (2/3) ... [2019-11-26 03:01:30,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bc475d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:01:30, skipping insertion in model container [2019-11-26 03:01:30,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:01:30" (3/3) ... [2019-11-26 03:01:30,504 INFO L109 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2019-11-26 03:01:30,549 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,549 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,549 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,549 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,550 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,550 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,551 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,551 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,551 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,551 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,552 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,552 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,552 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,552 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,553 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,553 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,553 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,554 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,555 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,555 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,555 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,555 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,555 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,556 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,556 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,557 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,557 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,557 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,557 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,558 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,558 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,558 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,559 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,559 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,560 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,561 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 03:01:30,585 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 03:01:30,585 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 03:01:30,592 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 03:01:30,604 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 03:01:30,622 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 03:01:30,622 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 03:01:30,622 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 03:01:30,623 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 03:01:30,623 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 03:01:30,623 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 03:01:30,623 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 03:01:30,623 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 03:01:30,636 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 56 transitions [2019-11-26 03:01:30,693 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 286 states. [2019-11-26 03:01:30,695 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states. [2019-11-26 03:01:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-26 03:01:30,711 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:30,712 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:01:30,712 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:01:30,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:30,716 INFO L82 PathProgramCache]: Analyzing trace with hash -230559477, now seen corresponding path program 1 times [2019-11-26 03:01:30,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:01:30,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740227589] [2019-11-26 03:01:30,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:01:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:30,997 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740227589] [2019-11-26 03:01:30,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:01:30,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 03:01:30,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337562001] [2019-11-26 03:01:31,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 03:01:31,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:01:31,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 03:01:31,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 03:01:31,017 INFO L87 Difference]: Start difference. First operand 286 states. Second operand 4 states. [2019-11-26 03:01:31,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:01:31,090 INFO L93 Difference]: Finished difference Result 287 states and 646 transitions. [2019-11-26 03:01:31,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 03:01:31,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-11-26 03:01:31,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:01:31,108 INFO L225 Difference]: With dead ends: 287 [2019-11-26 03:01:31,109 INFO L226 Difference]: Without dead ends: 151 [2019-11-26 03:01:31,113 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 [2019-11-26 03:01:31,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-26 03:01:31,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2019-11-26 03:01:31,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2019-11-26 03:01:31,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 325 transitions. [2019-11-26 03:01:31,176 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 325 transitions. Word has length 25 [2019-11-26 03:01:31,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:01:31,177 INFO L462 AbstractCegarLoop]: Abstraction has 151 states and 325 transitions. [2019-11-26 03:01:31,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 03:01:31,177 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 325 transitions. [2019-11-26 03:01:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 03:01:31,179 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:31,179 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:01:31,179 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:01:31,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:31,180 INFO L82 PathProgramCache]: Analyzing trace with hash -797607807, now seen corresponding path program 1 times [2019-11-26 03:01:31,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:01:31,180 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713180634] [2019-11-26 03:01:31,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:01:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:31,312 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713180634] [2019-11-26 03:01:31,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:01:31,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 03:01:31,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863032942] [2019-11-26 03:01:31,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 03:01:31,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:01:31,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 03:01:31,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 03:01:31,314 INFO L87 Difference]: Start difference. First operand 151 states and 325 transitions. Second operand 5 states. [2019-11-26 03:01:31,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:01:31,377 INFO L93 Difference]: Finished difference Result 124 states and 241 transitions. [2019-11-26 03:01:31,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 03:01:31,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-11-26 03:01:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:01:31,379 INFO L225 Difference]: With dead ends: 124 [2019-11-26 03:01:31,379 INFO L226 Difference]: Without dead ends: 109 [2019-11-26 03:01:31,380 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-26 03:01:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-11-26 03:01:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2019-11-26 03:01:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-26 03:01:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 213 transitions. [2019-11-26 03:01:31,390 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 213 transitions. Word has length 26 [2019-11-26 03:01:31,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:01:31,390 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 213 transitions. [2019-11-26 03:01:31,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 03:01:31,390 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 213 transitions. [2019-11-26 03:01:31,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 03:01:31,392 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:31,392 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:01:31,392 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:01:31,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:31,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1692776633, now seen corresponding path program 1 times [2019-11-26 03:01:31,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:01:31,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643517979] [2019-11-26 03:01:31,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:01:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:31,523 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643517979] [2019-11-26 03:01:31,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:01:31,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 03:01:31,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433138075] [2019-11-26 03:01:31,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 03:01:31,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:01:31,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 03:01:31,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-26 03:01:31,524 INFO L87 Difference]: Start difference. First operand 109 states and 213 transitions. Second operand 6 states. [2019-11-26 03:01:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:01:31,620 INFO L93 Difference]: Finished difference Result 163 states and 330 transitions. [2019-11-26 03:01:31,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 03:01:31,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-11-26 03:01:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:01:31,622 INFO L225 Difference]: With dead ends: 163 [2019-11-26 03:01:31,622 INFO L226 Difference]: Without dead ends: 94 [2019-11-26 03:01:31,622 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-26 03:01:31,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-11-26 03:01:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2019-11-26 03:01:31,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-11-26 03:01:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 183 transitions. [2019-11-26 03:01:31,630 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 183 transitions. Word has length 27 [2019-11-26 03:01:31,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:01:31,631 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 183 transitions. [2019-11-26 03:01:31,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 03:01:31,631 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 183 transitions. [2019-11-26 03:01:31,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 03:01:31,632 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:31,632 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:01:31,632 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:01:31,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:31,633 INFO L82 PathProgramCache]: Analyzing trace with hash 655471831, now seen corresponding path program 2 times [2019-11-26 03:01:31,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:01:31,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064312594] [2019-11-26 03:01:31,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:01:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:31,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064312594] [2019-11-26 03:01:31,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:01:31,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 03:01:31,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574414830] [2019-11-26 03:01:31,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 03:01:31,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:01:31,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 03:01:31,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 03:01:31,817 INFO L87 Difference]: Start difference. First operand 94 states and 183 transitions. Second operand 7 states. [2019-11-26 03:01:31,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:01:31,948 INFO L93 Difference]: Finished difference Result 76 states and 141 transitions. [2019-11-26 03:01:31,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 03:01:31,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-11-26 03:01:31,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:01:31,949 INFO L225 Difference]: With dead ends: 76 [2019-11-26 03:01:31,949 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 03:01:31,949 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-26 03:01:31,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 03:01:31,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 03:01:31,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 03:01:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 03:01:31,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-11-26 03:01:31,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:01:31,951 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 03:01:31,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 03:01:31,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 03:01:31,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 03:01:31,953 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 03:01:31,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 03:01:31 BasicIcfg [2019-11-26 03:01:31,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 03:01:31,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 03:01:31,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 03:01:31,956 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 03:01:31,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:01:30" (3/4) ... [2019-11-26 03:01:31,959 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 03:01:31,966 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-26 03:01:31,966 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-26 03:01:31,970 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-26 03:01:31,970 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 03:01:31,970 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 03:01:32,023 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e458b2d1-9623-43a4-bf76-c856310dfbba/bin/utaipan/witness.graphml [2019-11-26 03:01:32,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 03:01:32,027 INFO L168 Benchmark]: Toolchain (without parser) took 2724.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 947.4 MB in the beginning and 958.5 MB in the end (delta: -11.1 MB). Peak memory consumption was 126.2 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:32,028 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:01:32,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -152.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:32,029 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:01:32,030 INFO L168 Benchmark]: Boogie Preprocessor took 40.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:01:32,033 INFO L168 Benchmark]: RCFGBuilder took 498.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:32,034 INFO L168 Benchmark]: TraceAbstraction took 1459.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 958.5 MB in the end (delta: 113.8 MB). Peak memory consumption was 113.8 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:32,034 INFO L168 Benchmark]: Witness Printer took 69.96 ms. Allocated memory is still 1.2 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:01:32,042 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 606.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -152.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.58 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 498.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1459.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 958.5 MB in the end (delta: 113.8 MB). Peak memory consumption was 113.8 MB. Max. memory is 11.5 GB. * Witness Printer took 69.96 ms. Allocated memory is still 1.2 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 9 procedures, 66 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 144 SDtfs, 132 SDslu, 330 SDs, 0 SdLazy, 51 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=286occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 6799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...