./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3fa1ffa37f011d693047d2e96778a69bf7fbb304 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:55:39,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:55:39,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:55:39,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:55:39,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:55:39,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:55:39,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:55:39,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:55:39,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:55:39,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:55:39,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:55:39,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:55:39,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:55:39,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:55:39,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:55:39,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:55:39,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:55:39,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:55:39,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:55:39,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:55:39,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:55:39,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:55:39,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:55:39,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:55:39,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:55:39,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:55:39,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:55:39,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:55:39,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:55:39,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:55:39,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:55:39,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:55:39,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:55:39,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:55:39,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:55:39,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:55:39,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:55:39,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:55:39,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:55:39,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:55:39,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:55:39,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:55:39,143 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:55:39,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:55:39,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:55:39,144 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:55:39,144 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:55:39,144 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:55:39,145 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:55:39,145 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:55:39,145 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:55:39,145 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:55:39,145 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:55:39,146 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:55:39,146 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:55:39,146 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:55:39,146 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:55:39,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:55:39,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:55:39,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:55:39,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:55:39,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:55:39,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:55:39,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:55:39,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:55:39,149 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:55:39,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:55:39,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:55:39,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:55:39,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:55:39,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:55:39,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:55:39,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:55:39,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:55:39,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:55:39,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:55:39,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:55:39,153 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:55:39,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:55:39,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:55:39,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:55:39,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:55:39,154 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fa1ffa37f011d693047d2e96778a69bf7fbb304 [2020-11-22 12:55:39,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:55:39,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:55:39,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:55:39,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:55:39,480 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:55:39,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe037_pso.oepc.i [2020-11-22 12:55:39,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan/data/9cab5c5b1/61fbe969f6614a1b9ce63fc1a10546c1/FLAG96b057669 [2020-11-22 12:55:40,091 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:55:40,092 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/sv-benchmarks/c/pthread-wmm/safe037_pso.oepc.i [2020-11-22 12:55:40,108 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan/data/9cab5c5b1/61fbe969f6614a1b9ce63fc1a10546c1/FLAG96b057669 [2020-11-22 12:55:40,403 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan/data/9cab5c5b1/61fbe969f6614a1b9ce63fc1a10546c1 [2020-11-22 12:55:40,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:55:40,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:55:40,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:55:40,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:55:40,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:55:40,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:55:40" (1/1) ... [2020-11-22 12:55:40,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5c9e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:40, skipping insertion in model container [2020-11-22 12:55:40,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:55:40" (1/1) ... [2020-11-22 12:55:40,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:55:40,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:55:40,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:55:40,953 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:55:41,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:55:41,112 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:55:41,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:41 WrapperNode [2020-11-22 12:55:41,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:55:41,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:55:41,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:55:41,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:55:41,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:41" (1/1) ... [2020-11-22 12:55:41,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:41" (1/1) ... [2020-11-22 12:55:41,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:55:41,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:55:41,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:55:41,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:55:41,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:41" (1/1) ... [2020-11-22 12:55:41,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:41" (1/1) ... [2020-11-22 12:55:41,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:41" (1/1) ... [2020-11-22 12:55:41,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:41" (1/1) ... [2020-11-22 12:55:41,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:41" (1/1) ... [2020-11-22 12:55:41,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:41" (1/1) ... [2020-11-22 12:55:41,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:41" (1/1) ... [2020-11-22 12:55:41,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:55:41,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:55:41,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:55:41,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:55:41,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/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 [2020-11-22 12:55:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:55:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 12:55:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:55:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:55:41,295 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-22 12:55:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-22 12:55:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-22 12:55:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-22 12:55:41,296 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-22 12:55:41,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-22 12:55:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:55:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 12:55:41,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:55:41,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:55:41,299 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-22 12:55:41,774 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:55:41,774 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 12:55:41,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:41 BoogieIcfgContainer [2020-11-22 12:55:41,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:55:41,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:55:41,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:55:41,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:55:41,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:55:40" (1/3) ... [2020-11-22 12:55:41,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e0de0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:55:41, skipping insertion in model container [2020-11-22 12:55:41,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:55:41" (2/3) ... [2020-11-22 12:55:41,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e0de0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:55:41, skipping insertion in model container [2020-11-22 12:55:41,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:41" (3/3) ... [2020-11-22 12:55:41,784 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_pso.oepc.i [2020-11-22 12:55:41,795 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 12:55:41,796 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:55:41,800 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:55:41,801 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 12:55:41,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,825 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,825 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,826 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,826 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,827 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,827 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,828 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,828 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,832 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,832 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,836 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,836 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,844 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,844 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,845 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,845 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:55:41,846 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-22 12:55:41,858 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 12:55:41,897 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:55:41,899 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:55:41,899 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:55:41,899 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:55:41,899 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:55:41,899 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:55:41,899 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:55:41,899 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:55:41,914 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 12:55:41,916 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-22 12:55:41,919 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-22 12:55:41,921 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-11-22 12:55:41,963 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-11-22 12:55:41,963 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-22 12:55:41,967 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-22 12:55:41,970 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-22 12:55:44,390 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-22 12:55:44,495 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-22 12:55:44,633 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-11-22 12:55:44,713 INFO L131 LiptonReduction]: Checked pairs total: 2901 [2020-11-22 12:55:44,713 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-22 12:55:44,717 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-11-22 12:55:44,740 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-22 12:55:44,742 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-22 12:55:44,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:55:44,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:44,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:44,749 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:44,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:44,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1054042143, now seen corresponding path program 1 times [2020-11-22 12:55:44,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:44,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802726706] [2020-11-22 12:55:44,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:44,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802726706] [2020-11-22 12:55:44,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:44,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:55:44,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307378981] [2020-11-22 12:55:44,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:44,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:44,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:44,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:44,995 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 4 states. [2020-11-22 12:55:45,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:45,064 INFO L93 Difference]: Finished difference Result 281 states and 711 transitions. [2020-11-22 12:55:45,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:45,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 12:55:45,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:45,078 INFO L225 Difference]: With dead ends: 281 [2020-11-22 12:55:45,078 INFO L226 Difference]: Without dead ends: 180 [2020-11-22 12:55:45,079 INFO L677 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 [2020-11-22 12:55:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-22 12:55:45,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-11-22 12:55:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-22 12:55:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-11-22 12:55:45,131 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 8 [2020-11-22 12:55:45,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:45,132 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-11-22 12:55:45,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:45,132 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-11-22 12:55:45,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:55:45,134 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:45,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:45,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:55:45,134 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:45,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:45,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1550829140, now seen corresponding path program 1 times [2020-11-22 12:55:45,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:45,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108408429] [2020-11-22 12:55:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:45,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108408429] [2020-11-22 12:55:45,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:45,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:55:45,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379200113] [2020-11-22 12:55:45,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:55:45,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:45,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:55:45,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:55:45,328 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 5 states. [2020-11-22 12:55:45,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:45,419 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2020-11-22 12:55:45,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:55:45,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-22 12:55:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:45,426 INFO L225 Difference]: With dead ends: 163 [2020-11-22 12:55:45,426 INFO L226 Difference]: Without dead ends: 126 [2020-11-22 12:55:45,426 INFO L677 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 [2020-11-22 12:55:45,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-11-22 12:55:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-11-22 12:55:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-11-22 12:55:45,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2020-11-22 12:55:45,438 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2020-11-22 12:55:45,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:45,438 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2020-11-22 12:55:45,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:55:45,439 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2020-11-22 12:55:45,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:55:45,446 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:45,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:45,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:55:45,447 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:45,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:45,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1926964344, now seen corresponding path program 1 times [2020-11-22 12:55:45,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:45,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570382866] [2020-11-22 12:55:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:45,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570382866] [2020-11-22 12:55:45,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:45,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:55:45,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272986816] [2020-11-22 12:55:45,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:55:45,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:45,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:55:45,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:55:45,581 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand 6 states. [2020-11-22 12:55:45,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:45,682 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-11-22 12:55:45,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:55:45,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-22 12:55:45,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:45,683 INFO L225 Difference]: With dead ends: 118 [2020-11-22 12:55:45,683 INFO L226 Difference]: Without dead ends: 108 [2020-11-22 12:55:45,684 INFO L677 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 [2020-11-22 12:55:45,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-22 12:55:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-11-22 12:55:45,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-22 12:55:45,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-11-22 12:55:45,690 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-11-22 12:55:45,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:45,690 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-11-22 12:55:45,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:55:45,690 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-11-22 12:55:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:55:45,691 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:45,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:45,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:55:45,692 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:45,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:45,692 INFO L82 PathProgramCache]: Analyzing trace with hash 337836795, now seen corresponding path program 1 times [2020-11-22 12:55:45,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:45,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537557249] [2020-11-22 12:55:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:45,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537557249] [2020-11-22 12:55:45,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:45,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:55:45,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241632827] [2020-11-22 12:55:45,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:45,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:45,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:45,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:45,808 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-11-22 12:55:45,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:45,859 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-11-22 12:55:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:45,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 12:55:45,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:45,861 INFO L225 Difference]: With dead ends: 133 [2020-11-22 12:55:45,861 INFO L226 Difference]: Without dead ends: 54 [2020-11-22 12:55:45,862 INFO L677 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 [2020-11-22 12:55:45,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-22 12:55:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-22 12:55:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-22 12:55:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-22 12:55:45,871 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-11-22 12:55:45,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:45,871 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-22 12:55:45,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-22 12:55:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:55:45,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:45,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:45,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:55:45,873 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:45,873 INFO L82 PathProgramCache]: Analyzing trace with hash 64468355, now seen corresponding path program 2 times [2020-11-22 12:55:45,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:45,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897480487] [2020-11-22 12:55:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:45,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897480487] [2020-11-22 12:55:45,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:45,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:55:45,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054121053] [2020-11-22 12:55:45,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:45,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:45,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:45,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:45,959 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-11-22 12:55:45,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:45,981 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-11-22 12:55:45,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:45,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 12:55:45,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:45,982 INFO L225 Difference]: With dead ends: 67 [2020-11-22 12:55:45,982 INFO L226 Difference]: Without dead ends: 30 [2020-11-22 12:55:45,983 INFO L677 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 [2020-11-22 12:55:45,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-22 12:55:45,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-22 12:55:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-22 12:55:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-11-22 12:55:45,985 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-11-22 12:55:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:45,985 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-11-22 12:55:45,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:45,986 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-11-22 12:55:45,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:55:45,986 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:55:45,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:55:45,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:55:45,987 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:55:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:55:45,987 INFO L82 PathProgramCache]: Analyzing trace with hash -339277395, now seen corresponding path program 3 times [2020-11-22 12:55:45,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:55:45,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434399855] [2020-11-22 12:55:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:55:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:55:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:55:46,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434399855] [2020-11-22 12:55:46,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:55:46,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:55:46,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626612803] [2020-11-22 12:55:46,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:55:46,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:55:46,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:55:46,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:55:46,027 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-11-22 12:55:46,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:55:46,043 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-11-22 12:55:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:55:46,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 12:55:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:55:46,043 INFO L225 Difference]: With dead ends: 29 [2020-11-22 12:55:46,044 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:55:46,044 INFO L677 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 [2020-11-22 12:55:46,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:55:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:55:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:55:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:55:46,045 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-22 12:55:46,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:55:46,045 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:55:46,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:55:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:55:46,045 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:55:46,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:55:46,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:55:46 BasicIcfg [2020-11-22 12:55:46,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:55:46,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:55:46,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:55:46,049 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:55:46,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:55:41" (3/4) ... [2020-11-22 12:55:46,053 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:55:46,058 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-22 12:55:46,059 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-22 12:55:46,059 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-22 12:55:46,063 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-22 12:55:46,064 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:55:46,064 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:55:46,064 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:55:46,109 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7d7300ae-94ce-4fa1-aae2-bd113100128e/bin/utaipan/witness.graphml [2020-11-22 12:55:46,109 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:55:46,111 INFO L168 Benchmark]: Toolchain (without parser) took 5704.06 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 58.9 MB in the beginning and 52.9 MB in the end (delta: 6.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:46,111 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 71.3 MB. Free memory was 46.8 MB in the beginning and 46.8 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:46,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.12 ms. Allocated memory is still 94.4 MB. Free memory was 58.6 MB in the beginning and 50.7 MB in the end (delta: 7.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:46,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.75 ms. Allocated memory is still 94.4 MB. Free memory was 50.7 MB in the beginning and 49.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:46,113 INFO L168 Benchmark]: Boogie Preprocessor took 24.66 ms. Allocated memory is still 94.4 MB. Free memory was 49.0 MB in the beginning and 47.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:55:46,113 INFO L168 Benchmark]: RCFGBuilder took 572.25 ms. Allocated memory is still 94.4 MB. Free memory was 47.3 MB in the beginning and 65.2 MB in the end (delta: -17.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:46,114 INFO L168 Benchmark]: TraceAbstraction took 4270.79 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 65.2 MB in the beginning and 56.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:46,114 INFO L168 Benchmark]: Witness Printer took 60.40 ms. Allocated memory is still 113.2 MB. Free memory was 55.0 MB in the beginning and 52.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:55:46,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 71.3 MB. Free memory was 46.8 MB in the beginning and 46.8 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 705.12 ms. Allocated memory is still 94.4 MB. Free memory was 58.6 MB in the beginning and 50.7 MB in the end (delta: 7.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.75 ms. Allocated memory is still 94.4 MB. Free memory was 50.7 MB in the beginning and 49.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.66 ms. Allocated memory is still 94.4 MB. Free memory was 49.0 MB in the beginning and 47.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 572.25 ms. Allocated memory is still 94.4 MB. Free memory was 47.3 MB in the beginning and 65.2 MB in the end (delta: -17.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4270.79 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 65.2 MB in the beginning and 56.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. * Witness Printer took 60.40 ms. Allocated memory is still 113.2 MB. Free memory was 55.0 MB in the beginning and 52.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 950 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.7s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 75 TotalNumberOfCompositions, 2901 MoverChecksTotal - PositiveResult [Line: 17]: 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 115 SDtfs, 168 SDslu, 151 SDs, 0 SdLazy, 57 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...