./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/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 70bb90fa0308883bebb2300d1d33f198a55ea50c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 13:54:51,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:54:51,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:54:51,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:54:51,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:54:51,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:54:51,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:54:51,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:54:51,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:54:51,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:54:51,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:54:51,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:54:51,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:54:51,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:54:51,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:54:51,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:54:51,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:54:51,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:54:51,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:54:51,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:54:51,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:54:51,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:54:51,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:54:51,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:54:51,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:54:51,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:54:51,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:54:51,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:54:51,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:54:51,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:54:51,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:54:51,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:54:51,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:54:51,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:54:51,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:54:51,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:54:51,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:54:51,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:54:51,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:54:51,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:54:51,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:54:51,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 13:54:51,099 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:54:51,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:54:51,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 13:54:51,100 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 13:54:51,100 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 13:54:51,101 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 13:54:51,101 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 13:54:51,101 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 13:54:51,101 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 13:54:51,101 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 13:54:51,101 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 13:54:51,101 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 13:54:51,102 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 13:54:51,102 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 13:54:51,102 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 13:54:51,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:54:51,102 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:54:51,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:54:51,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:54:51,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:54:51,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:54:51,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:54:51,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:54:51,103 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 13:54:51,103 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:54:51,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:54:51,104 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:54:51,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:54:51,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:54:51,104 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:54:51,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:54:51,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:54:51,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:54:51,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:54:51,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:54:51,105 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 13:54:51,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:54:51,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:54:51,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:54:51,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 13:54:51,105 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_e938d091-530a-41d9-9b97-c7acc653a2c1/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 -> 70bb90fa0308883bebb2300d1d33f198a55ea50c [2019-12-07 13:54:51,204 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:54:51,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:54:51,217 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:54:51,219 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:54:51,219 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:54:51,220 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i [2019-12-07 13:54:51,261 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/bin/utaipan/data/813bdc763/e04abc386ca34e7a82f6d6c1e36fb21a/FLAG7bc032b6c [2019-12-07 13:54:51,630 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:54:51,630 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/sv-benchmarks/c/pthread-wmm/safe016_tso.oepc.i [2019-12-07 13:54:51,640 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/bin/utaipan/data/813bdc763/e04abc386ca34e7a82f6d6c1e36fb21a/FLAG7bc032b6c [2019-12-07 13:54:51,649 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/bin/utaipan/data/813bdc763/e04abc386ca34e7a82f6d6c1e36fb21a [2019-12-07 13:54:51,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:54:51,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:54:51,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:54:51,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:54:51,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:54:51,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:54:51" (1/1) ... [2019-12-07 13:54:51,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f04252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51, skipping insertion in model container [2019-12-07 13:54:51,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:54:51" (1/1) ... [2019-12-07 13:54:51,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:54:51,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:54:51,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:54:51,918 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:54:51,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:54:51,996 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:54:51,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51 WrapperNode [2019-12-07 13:54:51,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:54:51,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:54:51,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:54:51,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:54:52,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51" (1/1) ... [2019-12-07 13:54:52,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51" (1/1) ... [2019-12-07 13:54:52,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:54:52,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:54:52,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:54:52,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:54:52,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51" (1/1) ... [2019-12-07 13:54:52,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51" (1/1) ... [2019-12-07 13:54:52,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51" (1/1) ... [2019-12-07 13:54:52,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51" (1/1) ... [2019-12-07 13:54:52,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51" (1/1) ... [2019-12-07 13:54:52,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51" (1/1) ... [2019-12-07 13:54:52,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51" (1/1) ... [2019-12-07 13:54:52,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:54:52,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:54:52,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:54:52,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:54:52,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/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 [2019-12-07 13:54:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 13:54:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 13:54:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 13:54:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 13:54:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 13:54:52,090 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 13:54:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 13:54:52,090 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 13:54:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 13:54:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 13:54:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-12-07 13:54:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-12-07 13:54:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 13:54:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:54:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:54:52,093 WARN L205 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 13:54:52,274 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:54:52,274 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 13:54:52,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:54:52 BoogieIcfgContainer [2019-12-07 13:54:52,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:54:52,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:54:52,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:54:52,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:54:52,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:54:51" (1/3) ... [2019-12-07 13:54:52,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761e9d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:54:52, skipping insertion in model container [2019-12-07 13:54:52,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:54:51" (2/3) ... [2019-12-07 13:54:52,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761e9d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:54:52, skipping insertion in model container [2019-12-07 13:54:52,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:54:52" (3/3) ... [2019-12-07 13:54:52,280 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2019-12-07 13:54:52,286 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 13:54:52,286 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:54:52,291 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 13:54:52,291 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 13:54:52,310 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,310 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,310 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,310 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,310 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,311 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,311 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,311 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,311 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,311 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,311 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,311 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,312 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,312 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,312 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,312 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,312 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,312 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,312 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,312 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,312 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,313 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,313 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,313 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 13:54:52,328 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-07 13:54:52,340 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:54:52,340 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:54:52,340 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:54:52,340 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:54:52,340 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:54:52,340 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:54:52,340 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:54:52,340 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:54:52,349 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 63 transitions [2019-12-07 13:54:52,350 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions [2019-12-07 13:54:52,377 INFO L134 PetriNetUnfolder]: 1/59 cut-off events. [2019-12-07 13:54:52,378 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 13:54:52,382 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/69 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 13:54:52,384 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions [2019-12-07 13:54:52,395 INFO L134 PetriNetUnfolder]: 1/59 cut-off events. [2019-12-07 13:54:52,395 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 13:54:52,396 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/69 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 13:54:52,397 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-12-07 13:54:52,398 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 13:54:53,290 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-12-07 13:54:53,574 INFO L206 etLargeBlockEncoding]: Checked pairs total: 749 [2019-12-07 13:54:53,574 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2019-12-07 13:54:53,576 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 19 transitions [2019-12-07 13:54:53,586 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 94 states. [2019-12-07 13:54:53,587 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2019-12-07 13:54:53,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 13:54:53,591 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:53,592 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:53,592 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:54:53,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:53,596 INFO L82 PathProgramCache]: Analyzing trace with hash 364087523, now seen corresponding path program 1 times [2019-12-07 13:54:53,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:54:53,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579666097] [2019-12-07 13:54:53,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:53,780 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579666097] [2019-12-07 13:54:53,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:53,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 13:54:53,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872912630] [2019-12-07 13:54:53,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:54:53,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:54:53,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:54:53,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:54:53,795 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2019-12-07 13:54:53,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:53,823 INFO L93 Difference]: Finished difference Result 137 states and 310 transitions. [2019-12-07 13:54:53,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:54:53,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 13:54:53,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:53,833 INFO L225 Difference]: With dead ends: 137 [2019-12-07 13:54:53,833 INFO L226 Difference]: Without dead ends: 103 [2019-12-07 13:54:53,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:54:53,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-12-07 13:54:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2019-12-07 13:54:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-12-07 13:54:53,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 206 transitions. [2019-12-07 13:54:53,864 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 206 transitions. Word has length 10 [2019-12-07 13:54:53,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:53,865 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 206 transitions. [2019-12-07 13:54:53,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:54:53,865 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 206 transitions. [2019-12-07 13:54:53,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:54:53,866 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:53,866 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:53,866 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:54:53,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:53,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1598188831, now seen corresponding path program 1 times [2019-12-07 13:54:53,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:54:53,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695462727] [2019-12-07 13:54:53,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:53,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695462727] [2019-12-07 13:54:53,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:53,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:54:53,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551042470] [2019-12-07 13:54:53,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:54:53,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:54:53,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:54:53,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:54:53,922 INFO L87 Difference]: Start difference. First operand 94 states and 206 transitions. Second operand 4 states. [2019-12-07 13:54:53,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:53,936 INFO L93 Difference]: Finished difference Result 91 states and 189 transitions. [2019-12-07 13:54:53,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:54:53,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 13:54:53,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:53,938 INFO L225 Difference]: With dead ends: 91 [2019-12-07 13:54:53,938 INFO L226 Difference]: Without dead ends: 87 [2019-12-07 13:54:53,939 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:54:53,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-12-07 13:54:53,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2019-12-07 13:54:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-12-07 13:54:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 163 transitions. [2019-12-07 13:54:53,947 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 163 transitions. Word has length 11 [2019-12-07 13:54:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:53,948 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 163 transitions. [2019-12-07 13:54:53,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:54:53,948 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 163 transitions. [2019-12-07 13:54:53,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 13:54:53,949 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:53,949 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:53,949 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:54:53,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:53,949 INFO L82 PathProgramCache]: Analyzing trace with hash 925343788, now seen corresponding path program 1 times [2019-12-07 13:54:53,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:54:53,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249994921] [2019-12-07 13:54:53,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:54,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:54,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249994921] [2019-12-07 13:54:54,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:54,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 13:54:54,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061690177] [2019-12-07 13:54:54,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 13:54:54,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:54:54,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 13:54:54,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:54:54,035 INFO L87 Difference]: Start difference. First operand 78 states and 163 transitions. Second operand 6 states. [2019-12-07 13:54:54,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:54,079 INFO L93 Difference]: Finished difference Result 82 states and 161 transitions. [2019-12-07 13:54:54,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 13:54:54,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-07 13:54:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:54,080 INFO L225 Difference]: With dead ends: 82 [2019-12-07 13:54:54,080 INFO L226 Difference]: Without dead ends: 64 [2019-12-07 13:54:54,081 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 13:54:54,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-12-07 13:54:54,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2019-12-07 13:54:54,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 13:54:54,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 109 transitions. [2019-12-07 13:54:54,085 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 109 transitions. Word has length 12 [2019-12-07 13:54:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:54,085 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 109 transitions. [2019-12-07 13:54:54,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 13:54:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 109 transitions. [2019-12-07 13:54:54,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 13:54:54,085 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:54,086 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:54,086 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:54:54,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:54,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1348878632, now seen corresponding path program 1 times [2019-12-07 13:54:54,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:54:54,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101062489] [2019-12-07 13:54:54,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:54,143 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101062489] [2019-12-07 13:54:54,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:54,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 13:54:54,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776657060] [2019-12-07 13:54:54,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 13:54:54,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:54:54,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 13:54:54,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 13:54:54,144 INFO L87 Difference]: Start difference. First operand 58 states and 109 transitions. Second operand 7 states. [2019-12-07 13:54:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:54,200 INFO L93 Difference]: Finished difference Result 56 states and 103 transitions. [2019-12-07 13:54:54,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 13:54:54,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-12-07 13:54:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:54,200 INFO L225 Difference]: With dead ends: 56 [2019-12-07 13:54:54,201 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 13:54:54,201 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-12-07 13:54:54,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 13:54:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2019-12-07 13:54:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 13:54:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 88 transitions. [2019-12-07 13:54:54,205 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 88 transitions. Word has length 13 [2019-12-07 13:54:54,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:54,205 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 88 transitions. [2019-12-07 13:54:54,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 13:54:54,205 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 88 transitions. [2019-12-07 13:54:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:54:54,206 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:54,206 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:54,206 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:54:54,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:54,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1134517083, now seen corresponding path program 1 times [2019-12-07 13:54:54,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:54:54,207 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810049354] [2019-12-07 13:54:54,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:54,263 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810049354] [2019-12-07 13:54:54,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:54,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:54:54,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489976181] [2019-12-07 13:54:54,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:54:54,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:54:54,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:54:54,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:54:54,264 INFO L87 Difference]: Start difference. First operand 45 states and 88 transitions. Second operand 5 states. [2019-12-07 13:54:54,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:54,282 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2019-12-07 13:54:54,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:54:54,282 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 13:54:54,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:54,283 INFO L225 Difference]: With dead ends: 59 [2019-12-07 13:54:54,283 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 13:54:54,284 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:54:54,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 13:54:54,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2019-12-07 13:54:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 13:54:54,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 54 transitions. [2019-12-07 13:54:54,286 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 54 transitions. Word has length 14 [2019-12-07 13:54:54,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:54,287 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 54 transitions. [2019-12-07 13:54:54,287 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:54:54,287 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 54 transitions. [2019-12-07 13:54:54,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:54:54,288 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:54,288 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:54,288 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:54:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:54,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1937154369, now seen corresponding path program 2 times [2019-12-07 13:54:54,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:54:54,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320071936] [2019-12-07 13:54:54,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:54,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320071936] [2019-12-07 13:54:54,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:54,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:54:54,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753056902] [2019-12-07 13:54:54,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 13:54:54,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:54:54,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 13:54:54,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:54:54,338 INFO L87 Difference]: Start difference. First operand 33 states and 54 transitions. Second operand 5 states. [2019-12-07 13:54:54,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:54,354 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2019-12-07 13:54:54,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:54:54,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 13:54:54,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:54,355 INFO L225 Difference]: With dead ends: 42 [2019-12-07 13:54:54,355 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 13:54:54,355 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 13:54:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 13:54:54,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 13:54:54,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 13:54:54,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2019-12-07 13:54:54,357 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 14 [2019-12-07 13:54:54,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:54,357 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-12-07 13:54:54,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 13:54:54,357 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2019-12-07 13:54:54,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:54:54,358 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:54,358 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:54,358 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:54:54,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:54,358 INFO L82 PathProgramCache]: Analyzing trace with hash 562302313, now seen corresponding path program 3 times [2019-12-07 13:54:54,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:54:54,358 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037155074] [2019-12-07 13:54:54,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:54,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037155074] [2019-12-07 13:54:54,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:54,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:54:54,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484462566] [2019-12-07 13:54:54,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:54:54,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:54:54,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:54:54,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:54:54,391 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand 4 states. [2019-12-07 13:54:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:54,405 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2019-12-07 13:54:54,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:54:54,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 13:54:54,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:54,406 INFO L225 Difference]: With dead ends: 28 [2019-12-07 13:54:54,406 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 13:54:54,406 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:54:54,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 13:54:54,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 13:54:54,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 13:54:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2019-12-07 13:54:54,408 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 14 [2019-12-07 13:54:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:54,408 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-12-07 13:54:54,408 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:54:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2019-12-07 13:54:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:54:54,408 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:54:54,408 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:54:54,408 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 13:54:54,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:54:54,409 INFO L82 PathProgramCache]: Analyzing trace with hash 586461853, now seen corresponding path program 4 times [2019-12-07 13:54:54,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:54:54,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335897342] [2019-12-07 13:54:54,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:54:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:54:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:54:54,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335897342] [2019-12-07 13:54:54,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:54:54,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:54:54,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360823646] [2019-12-07 13:54:54,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:54:54,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:54:54,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:54:54,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:54:54,433 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand 4 states. [2019-12-07 13:54:54,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:54:54,442 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2019-12-07 13:54:54,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 13:54:54,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 13:54:54,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:54:54,443 INFO L225 Difference]: With dead ends: 22 [2019-12-07 13:54:54,443 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 13:54:54,443 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 13:54:54,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 13:54:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 13:54:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 13:54:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 13:54:54,443 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-12-07 13:54:54,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:54:54,444 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:54:54,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:54:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:54:54,444 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 13:54:54,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:54:54 BasicIcfg [2019-12-07 13:54:54,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:54:54,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:54:54,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:54:54,447 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:54:54,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:54:52" (3/4) ... [2019-12-07 13:54:54,449 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 13:54:54,454 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 13:54:54,454 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 13:54:54,454 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 13:54:54,454 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-12-07 13:54:54,457 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 13:54:54,457 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 13:54:54,457 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 13:54:54,486 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e938d091-530a-41d9-9b97-c7acc653a2c1/bin/utaipan/witness.graphml [2019-12-07 13:54:54,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:54:54,488 INFO L168 Benchmark]: Toolchain (without parser) took 2835.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 939.8 MB in the beginning and 901.2 MB in the end (delta: 38.6 MB). Peak memory consumption was 141.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:54:54,488 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:54:54,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -130.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-12-07 13:54:54,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:54:54,489 INFO L168 Benchmark]: Boogie Preprocessor took 18.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:54:54,489 INFO L168 Benchmark]: RCFGBuilder took 227.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:54:54,489 INFO L168 Benchmark]: TraceAbstraction took 2170.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 908.1 MB in the end (delta: 133.6 MB). Peak memory consumption was 133.6 MB. Max. memory is 11.5 GB. [2019-12-07 13:54:54,490 INFO L168 Benchmark]: Witness Printer took 39.87 ms. Allocated memory is still 1.1 GB. Free memory was 908.1 MB in the beginning and 901.2 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 13:54:54,491 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 344.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -130.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 227.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2170.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 908.1 MB in the end (delta: 133.6 MB). Peak memory consumption was 133.6 MB. Max. memory is 11.5 GB. * Witness Printer took 39.87 ms. Allocated memory is still 1.1 GB. Free memory was 908.1 MB in the beginning and 901.2 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 75 ProgramPointsBefore, 27 ProgramPointsAfterwards, 63 TransitionsBefore, 19 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 363 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 749 CheckedPairsTotal, 49 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 63 locations, 1 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 144 SDslu, 108 SDs, 0 SdLazy, 96 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 32 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 5477 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...