./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/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 ffd27eb51bbbfe3eeef30785e40b2473c24c7f3d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 16:00:50,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 16:00:50,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 16:00:50,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 16:00:50,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 16:00:50,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 16:00:50,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 16:00:50,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 16:00:50,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 16:00:50,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 16:00:50,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 16:00:50,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 16:00:50,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 16:00:50,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 16:00:50,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 16:00:50,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 16:00:50,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 16:00:50,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 16:00:50,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 16:00:50,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 16:00:50,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 16:00:50,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 16:00:50,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 16:00:50,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 16:00:50,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 16:00:50,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 16:00:50,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 16:00:50,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 16:00:50,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 16:00:50,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 16:00:50,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 16:00:50,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 16:00:50,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 16:00:50,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 16:00:50,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 16:00:50,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 16:00:50,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 16:00:50,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 16:00:50,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 16:00:50,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 16:00:50,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 16:00:50,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 16:00:50,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 16:00:50,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 16:00:50,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 16:00:50,154 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 16:00:50,154 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 16:00:50,154 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 16:00:50,154 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 16:00:50,154 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 16:00:50,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 16:00:50,155 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 16:00:50,155 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 16:00:50,155 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 16:00:50,155 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 16:00:50,155 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 16:00:50,155 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 16:00:50,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 16:00:50,156 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 16:00:50,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 16:00:50,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 16:00:50,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 16:00:50,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 16:00:50,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 16:00:50,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 16:00:50,156 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 16:00:50,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 16:00:50,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 16:00:50,157 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 16:00:50,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 16:00:50,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 16:00:50,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 16:00:50,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 16:00:50,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 16:00:50,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 16:00:50,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 16:00:50,158 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 16:00:50,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 16:00:50,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 16:00:50,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 16:00:50,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 16:00:50,158 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_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffd27eb51bbbfe3eeef30785e40b2473c24c7f3d [2020-12-09 16:00:50,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 16:00:50,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 16:00:50,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 16:00:50,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 16:00:50,359 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 16:00:50,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i [2020-12-09 16:00:50,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/bin/utaipan/data/04d5b7277/04077b74dd57429cb33daddea37bbbc8/FLAGe6ccf58d8 [2020-12-09 16:00:50,814 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 16:00:50,814 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i [2020-12-09 16:00:50,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/bin/utaipan/data/04d5b7277/04077b74dd57429cb33daddea37bbbc8/FLAGe6ccf58d8 [2020-12-09 16:00:50,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/bin/utaipan/data/04d5b7277/04077b74dd57429cb33daddea37bbbc8 [2020-12-09 16:00:50,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 16:00:50,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 16:00:50,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 16:00:50,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 16:00:50,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 16:00:50,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:00:50" (1/1) ... [2020-12-09 16:00:50,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5064fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:50, skipping insertion in model container [2020-12-09 16:00:50,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:00:50" (1/1) ... [2020-12-09 16:00:50,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 16:00:50,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 16:00:51,002 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i[949,962] [2020-12-09 16:00:51,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:00:51,097 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 16:00:51,105 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i[949,962] [2020-12-09 16:00:51,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 16:00:51,179 INFO L208 MainTranslator]: Completed translation [2020-12-09 16:00:51,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:51 WrapperNode [2020-12-09 16:00:51,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 16:00:51,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 16:00:51,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 16:00:51,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 16:00:51,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:51" (1/1) ... [2020-12-09 16:00:51,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:51" (1/1) ... [2020-12-09 16:00:51,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 16:00:51,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 16:00:51,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 16:00:51,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 16:00:51,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:51" (1/1) ... [2020-12-09 16:00:51,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:51" (1/1) ... [2020-12-09 16:00:51,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:51" (1/1) ... [2020-12-09 16:00:51,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:51" (1/1) ... [2020-12-09 16:00:51,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:51" (1/1) ... [2020-12-09 16:00:51,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:51" (1/1) ... [2020-12-09 16:00:51,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:51" (1/1) ... [2020-12-09 16:00:51,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 16:00:51,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 16:00:51,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 16:00:51,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 16:00:51,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/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 [2020-12-09 16:00:51,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 16:00:51,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 16:00:51,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 16:00:51,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 16:00:51,294 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 16:00:51,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 16:00:51,295 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 16:00:51,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 16:00:51,295 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 16:00:51,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 16:00:51,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 16:00:51,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 16:00:51,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 16:00:51,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 16:00:51,297 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 16:00:51,518 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 16:00:51,518 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 16:00:51,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:00:51 BoogieIcfgContainer [2020-12-09 16:00:51,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 16:00:51,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 16:00:51,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 16:00:51,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 16:00:51,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:00:50" (1/3) ... [2020-12-09 16:00:51,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693c7a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:00:51, skipping insertion in model container [2020-12-09 16:00:51,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:00:51" (2/3) ... [2020-12-09 16:00:51,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693c7a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:00:51, skipping insertion in model container [2020-12-09 16:00:51,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:00:51" (3/3) ... [2020-12-09 16:00:51,526 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2020-12-09 16:00:51,536 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 16:00:51,536 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 16:00:51,539 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 16:00:51,539 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 16:00:51,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,560 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,560 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,561 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,561 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,562 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,562 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,563 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,563 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,563 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,563 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,563 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,564 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,564 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,564 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,566 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,566 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,566 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,566 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,570 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,570 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,570 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,572 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,572 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,572 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 16:00:51,574 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 16:00:51,582 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 16:00:51,596 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 16:00:51,596 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 16:00:51,596 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 16:00:51,596 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 16:00:51,596 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 16:00:51,596 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 16:00:51,596 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 16:00:51,596 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 16:00:51,604 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 16:00:51,606 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-09 16:00:51,608 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2020-12-09 16:00:51,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2020-12-09 16:00:51,640 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2020-12-09 16:00:51,640 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 16:00:51,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 16:00:51,644 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 16:00:53,263 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-09 16:00:53,461 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-12-09 16:00:53,540 INFO L131 LiptonReduction]: Checked pairs total: 2703 [2020-12-09 16:00:53,540 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-09 16:00:53,544 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 16:00:53,563 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 16:00:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 16:00:53,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 16:00:53,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:00:53,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:00:53,570 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:00:53,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:00:53,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1511125318, now seen corresponding path program 1 times [2020-12-09 16:00:53,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:00:53,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345907215] [2020-12-09 16:00:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:00:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:00:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:00:53,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345907215] [2020-12-09 16:00:53,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:00:53,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:00:53,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216554800] [2020-12-09 16:00:53,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 16:00:53,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:00:53,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 16:00:53,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 16:00:53,702 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 16:00:53,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:00:53,723 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 16:00:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 16:00:53,724 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 16:00:53,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:00:53,734 INFO L225 Difference]: With dead ends: 362 [2020-12-09 16:00:53,735 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 16:00:53,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 16:00:53,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 16:00:53,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 16:00:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 16:00:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 16:00:53,782 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 16:00:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:00:53,783 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 16:00:53,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 16:00:53,783 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 16:00:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 16:00:53,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:00:53,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:00:53,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 16:00:53,784 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:00:53,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:00:53,785 INFO L82 PathProgramCache]: Analyzing trace with hash -399770224, now seen corresponding path program 1 times [2020-12-09 16:00:53,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:00:53,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761764471] [2020-12-09 16:00:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:00:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:00:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:00:53,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761764471] [2020-12-09 16:00:53,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:00:53,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 16:00:53,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928031045] [2020-12-09 16:00:53,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:00:53,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:00:53,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:00:53,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:00:53,868 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 16:00:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:00:53,899 INFO L93 Difference]: Finished difference Result 518 states and 1456 transitions. [2020-12-09 16:00:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 16:00:53,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 16:00:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:00:53,902 INFO L225 Difference]: With dead ends: 518 [2020-12-09 16:00:53,902 INFO L226 Difference]: Without dead ends: 372 [2020-12-09 16:00:53,903 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 [2020-12-09 16:00:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-12-09 16:00:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 312. [2020-12-09 16:00:53,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-12-09 16:00:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 836 transitions. [2020-12-09 16:00:53,922 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 836 transitions. Word has length 9 [2020-12-09 16:00:53,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:00:53,922 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 836 transitions. [2020-12-09 16:00:53,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:00:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 836 transitions. [2020-12-09 16:00:53,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 16:00:53,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:00:53,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:00:53,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 16:00:53,924 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:00:53,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:00:53,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1147875187, now seen corresponding path program 1 times [2020-12-09 16:00:53,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:00:53,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971985596] [2020-12-09 16:00:53,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:00:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:00:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:00:53,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971985596] [2020-12-09 16:00:53,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:00:53,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:00:53,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843530645] [2020-12-09 16:00:53,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:00:53,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:00:53,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:00:53,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:00:53,977 INFO L87 Difference]: Start difference. First operand 312 states and 836 transitions. Second operand 5 states. [2020-12-09 16:00:54,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:00:54,022 INFO L93 Difference]: Finished difference Result 430 states and 1110 transitions. [2020-12-09 16:00:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 16:00:54,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 16:00:54,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:00:54,025 INFO L225 Difference]: With dead ends: 430 [2020-12-09 16:00:54,025 INFO L226 Difference]: Without dead ends: 346 [2020-12-09 16:00:54,025 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 [2020-12-09 16:00:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-12-09 16:00:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 290. [2020-12-09 16:00:54,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-12-09 16:00:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 762 transitions. [2020-12-09 16:00:54,036 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 762 transitions. Word has length 10 [2020-12-09 16:00:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:00:54,036 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 762 transitions. [2020-12-09 16:00:54,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:00:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 762 transitions. [2020-12-09 16:00:54,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 16:00:54,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:00:54,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:00:54,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 16:00:54,038 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:00:54,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:00:54,039 INFO L82 PathProgramCache]: Analyzing trace with hash 345922742, now seen corresponding path program 1 times [2020-12-09 16:00:54,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:00:54,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974979896] [2020-12-09 16:00:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:00:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:00:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:00:54,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974979896] [2020-12-09 16:00:54,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:00:54,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:00:54,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386406911] [2020-12-09 16:00:54,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:00:54,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:00:54,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:00:54,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:00:54,090 INFO L87 Difference]: Start difference. First operand 290 states and 762 transitions. Second operand 5 states. [2020-12-09 16:00:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:00:54,126 INFO L93 Difference]: Finished difference Result 392 states and 1001 transitions. [2020-12-09 16:00:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 16:00:54,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 16:00:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:00:54,129 INFO L225 Difference]: With dead ends: 392 [2020-12-09 16:00:54,129 INFO L226 Difference]: Without dead ends: 326 [2020-12-09 16:00:54,129 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 [2020-12-09 16:00:54,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-12-09 16:00:54,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 270. [2020-12-09 16:00:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-12-09 16:00:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 698 transitions. [2020-12-09 16:00:54,137 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 698 transitions. Word has length 10 [2020-12-09 16:00:54,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:00:54,137 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 698 transitions. [2020-12-09 16:00:54,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:00:54,137 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 698 transitions. [2020-12-09 16:00:54,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 16:00:54,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:00:54,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:00:54,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 16:00:54,139 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:00:54,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:00:54,139 INFO L82 PathProgramCache]: Analyzing trace with hash 2133634442, now seen corresponding path program 1 times [2020-12-09 16:00:54,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:00:54,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735454866] [2020-12-09 16:00:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:00:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:00:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:00:54,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735454866] [2020-12-09 16:00:54,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:00:54,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:00:54,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775704921] [2020-12-09 16:00:54,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:00:54,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:00:54,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:00:54,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:00:54,181 INFO L87 Difference]: Start difference. First operand 270 states and 698 transitions. Second operand 5 states. [2020-12-09 16:00:54,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:00:54,220 INFO L93 Difference]: Finished difference Result 356 states and 902 transitions. [2020-12-09 16:00:54,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 16:00:54,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 16:00:54,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:00:54,223 INFO L225 Difference]: With dead ends: 356 [2020-12-09 16:00:54,223 INFO L226 Difference]: Without dead ends: 312 [2020-12-09 16:00:54,224 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 [2020-12-09 16:00:54,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-12-09 16:00:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 260. [2020-12-09 16:00:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-12-09 16:00:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 664 transitions. [2020-12-09 16:00:54,234 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 664 transitions. Word has length 11 [2020-12-09 16:00:54,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:00:54,234 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 664 transitions. [2020-12-09 16:00:54,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:00:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 664 transitions. [2020-12-09 16:00:54,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 16:00:54,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:00:54,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:00:54,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 16:00:54,236 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:00:54,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:00:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash -399190841, now seen corresponding path program 1 times [2020-12-09 16:00:54,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:00:54,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790012557] [2020-12-09 16:00:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:00:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:00:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:00:54,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790012557] [2020-12-09 16:00:54,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:00:54,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:00:54,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771047012] [2020-12-09 16:00:54,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:00:54,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:00:54,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:00:54,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:00:54,276 INFO L87 Difference]: Start difference. First operand 260 states and 664 transitions. Second operand 5 states. [2020-12-09 16:00:54,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:00:54,309 INFO L93 Difference]: Finished difference Result 406 states and 991 transitions. [2020-12-09 16:00:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 16:00:54,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 16:00:54,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:00:54,312 INFO L225 Difference]: With dead ends: 406 [2020-12-09 16:00:54,312 INFO L226 Difference]: Without dead ends: 324 [2020-12-09 16:00:54,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:00:54,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-12-09 16:00:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 244. [2020-12-09 16:00:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-12-09 16:00:54,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 598 transitions. [2020-12-09 16:00:54,323 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 598 transitions. Word has length 12 [2020-12-09 16:00:54,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:00:54,323 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 598 transitions. [2020-12-09 16:00:54,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:00:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 598 transitions. [2020-12-09 16:00:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 16:00:54,324 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:00:54,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:00:54,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 16:00:54,324 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:00:54,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:00:54,325 INFO L82 PathProgramCache]: Analyzing trace with hash -932777299, now seen corresponding path program 1 times [2020-12-09 16:00:54,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:00:54,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977095250] [2020-12-09 16:00:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:00:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:00:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:00:54,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977095250] [2020-12-09 16:00:54,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:00:54,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 16:00:54,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883498987] [2020-12-09 16:00:54,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 16:00:54,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:00:54,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 16:00:54,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 16:00:54,374 INFO L87 Difference]: Start difference. First operand 244 states and 598 transitions. Second operand 4 states. [2020-12-09 16:00:54,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:00:54,398 INFO L93 Difference]: Finished difference Result 248 states and 536 transitions. [2020-12-09 16:00:54,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 16:00:54,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 16:00:54,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:00:54,400 INFO L225 Difference]: With dead ends: 248 [2020-12-09 16:00:54,401 INFO L226 Difference]: Without dead ends: 187 [2020-12-09 16:00:54,401 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 [2020-12-09 16:00:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-09 16:00:54,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-12-09 16:00:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-09 16:00:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 395 transitions. [2020-12-09 16:00:54,407 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 395 transitions. Word has length 12 [2020-12-09 16:00:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:00:54,408 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 395 transitions. [2020-12-09 16:00:54,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 16:00:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 395 transitions. [2020-12-09 16:00:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 16:00:54,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:00:54,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:00:54,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 16:00:54,409 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:00:54,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:00:54,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1335013917, now seen corresponding path program 1 times [2020-12-09 16:00:54,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:00:54,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868887077] [2020-12-09 16:00:54,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:00:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:00:54,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:00:54,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868887077] [2020-12-09 16:00:54,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:00:54,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:00:54,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683331415] [2020-12-09 16:00:54,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:00:54,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:00:54,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:00:54,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:00:54,456 INFO L87 Difference]: Start difference. First operand 187 states and 395 transitions. Second operand 5 states. [2020-12-09 16:00:54,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:00:54,493 INFO L93 Difference]: Finished difference Result 267 states and 539 transitions. [2020-12-09 16:00:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 16:00:54,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 16:00:54,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:00:54,496 INFO L225 Difference]: With dead ends: 267 [2020-12-09 16:00:54,496 INFO L226 Difference]: Without dead ends: 221 [2020-12-09 16:00:54,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:00:54,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-12-09 16:00:54,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 174. [2020-12-09 16:00:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-09 16:00:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 363 transitions. [2020-12-09 16:00:54,503 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 363 transitions. Word has length 13 [2020-12-09 16:00:54,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:00:54,503 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 363 transitions. [2020-12-09 16:00:54,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:00:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 363 transitions. [2020-12-09 16:00:54,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 16:00:54,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:00:54,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:00:54,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 16:00:54,504 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:00:54,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:00:54,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1081898830, now seen corresponding path program 1 times [2020-12-09 16:00:54,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:00:54,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134192247] [2020-12-09 16:00:54,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:00:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:00:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:00:54,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134192247] [2020-12-09 16:00:54,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:00:54,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:00:54,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454910588] [2020-12-09 16:00:54,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:00:54,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:00:54,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:00:54,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:00:54,549 INFO L87 Difference]: Start difference. First operand 174 states and 363 transitions. Second operand 5 states. [2020-12-09 16:00:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:00:54,575 INFO L93 Difference]: Finished difference Result 258 states and 510 transitions. [2020-12-09 16:00:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 16:00:54,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 16:00:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:00:54,577 INFO L225 Difference]: With dead ends: 258 [2020-12-09 16:00:54,577 INFO L226 Difference]: Without dead ends: 212 [2020-12-09 16:00:54,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:00:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-09 16:00:54,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 165. [2020-12-09 16:00:54,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-12-09 16:00:54,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 340 transitions. [2020-12-09 16:00:54,581 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 340 transitions. Word has length 13 [2020-12-09 16:00:54,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:00:54,581 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 340 transitions. [2020-12-09 16:00:54,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:00:54,581 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 340 transitions. [2020-12-09 16:00:54,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 16:00:54,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:00:54,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:00:54,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 16:00:54,582 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:00:54,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:00:54,582 INFO L82 PathProgramCache]: Analyzing trace with hash -144595800, now seen corresponding path program 1 times [2020-12-09 16:00:54,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:00:54,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351117619] [2020-12-09 16:00:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:00:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:00:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:00:54,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351117619] [2020-12-09 16:00:54,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:00:54,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 16:00:54,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787251351] [2020-12-09 16:00:54,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 16:00:54,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:00:54,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 16:00:54,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 16:00:54,614 INFO L87 Difference]: Start difference. First operand 165 states and 340 transitions. Second operand 5 states. [2020-12-09 16:00:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:00:54,646 INFO L93 Difference]: Finished difference Result 147 states and 274 transitions. [2020-12-09 16:00:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 16:00:54,646 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 16:00:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:00:54,647 INFO L225 Difference]: With dead ends: 147 [2020-12-09 16:00:54,647 INFO L226 Difference]: Without dead ends: 96 [2020-12-09 16:00:54,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:00:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-09 16:00:54,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-12-09 16:00:54,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-09 16:00:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 163 transitions. [2020-12-09 16:00:54,651 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 163 transitions. Word has length 14 [2020-12-09 16:00:54,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:00:54,651 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 163 transitions. [2020-12-09 16:00:54,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 16:00:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 163 transitions. [2020-12-09 16:00:54,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 16:00:54,652 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 16:00:54,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 16:00:54,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 16:00:54,652 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 16:00:54,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 16:00:54,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1619656222, now seen corresponding path program 1 times [2020-12-09 16:00:54,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 16:00:54,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576750606] [2020-12-09 16:00:54,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 16:00:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 16:00:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 16:00:54,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576750606] [2020-12-09 16:00:54,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 16:00:54,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 16:00:54,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613988471] [2020-12-09 16:00:54,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 16:00:54,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 16:00:54,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 16:00:54,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 16:00:54,692 INFO L87 Difference]: Start difference. First operand 96 states and 163 transitions. Second operand 6 states. [2020-12-09 16:00:54,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 16:00:54,709 INFO L93 Difference]: Finished difference Result 82 states and 141 transitions. [2020-12-09 16:00:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 16:00:54,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 16:00:54,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 16:00:54,710 INFO L225 Difference]: With dead ends: 82 [2020-12-09 16:00:54,710 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 16:00:54,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 16:00:54,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 16:00:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 16:00:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 16:00:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 16:00:54,710 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-09 16:00:54,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 16:00:54,710 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 16:00:54,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 16:00:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 16:00:54,711 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 16:00:54,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 16:00:54,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:00:54 BasicIcfg [2020-12-09 16:00:54,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 16:00:54,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 16:00:54,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 16:00:54,713 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 16:00:54,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:00:51" (3/4) ... [2020-12-09 16:00:54,716 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 16:00:54,720 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 16:00:54,720 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 16:00:54,720 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 16:00:54,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 16:00:54,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 16:00:54,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 16:00:54,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 16:00:54,750 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_69d2cfd1-cb92-44a7-9dd7-de0d82d33d75/bin/utaipan/witness.graphml [2020-12-09 16:00:54,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 16:00:54,751 INFO L168 Benchmark]: Toolchain (without parser) took 3909.00 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 71.3 MB in the beginning and 76.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2020-12-09 16:00:54,751 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 109.1 MB. Free memory is still 88.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:00:54,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.07 ms. Allocated memory is still 109.1 MB. Free memory was 71.1 MB in the beginning and 64.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 16:00:54,752 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.52 ms. Allocated memory is still 109.1 MB. Free memory was 64.5 MB in the beginning and 62.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:00:54,752 INFO L168 Benchmark]: Boogie Preprocessor took 17.91 ms. Allocated memory is still 109.1 MB. Free memory was 62.9 MB in the beginning and 61.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 16:00:54,752 INFO L168 Benchmark]: RCFGBuilder took 290.98 ms. Allocated memory is still 109.1 MB. Free memory was 61.2 MB in the beginning and 79.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-09 16:00:54,753 INFO L168 Benchmark]: TraceAbstraction took 3192.41 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 78.9 MB in the beginning and 80.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. [2020-12-09 16:00:54,753 INFO L168 Benchmark]: Witness Printer took 36.80 ms. Allocated memory is still 159.4 MB. Free memory was 80.1 MB in the beginning and 76.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 16:00:54,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 109.1 MB. Free memory is still 88.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.07 ms. Allocated memory is still 109.1 MB. Free memory was 71.1 MB in the beginning and 64.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.52 ms. Allocated memory is still 109.1 MB. Free memory was 64.5 MB in the beginning and 62.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.91 ms. Allocated memory is still 109.1 MB. Free memory was 62.9 MB in the beginning and 61.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 290.98 ms. Allocated memory is still 109.1 MB. Free memory was 61.2 MB in the beginning and 79.5 MB in the end (delta: -18.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3192.41 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 78.9 MB in the beginning and 80.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. * Witness Printer took 36.80 ms. Allocated memory is still 159.4 MB. Free memory was 80.1 MB in the beginning and 76.9 MB in the end (delta: 3.1 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 805 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 73 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 81 PlacesBefore, 32 PlacesAfterwards, 73 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2703 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 299 SDtfs, 274 SDslu, 492 SDs, 0 SdLazy, 170 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 398 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 6358 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...