./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.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_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI --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 692cfe8c8c302b29f29b9d33b1fef0f3efd9c990 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:26:19,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:19,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:19,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:19,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:19,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:19,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:19,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:19,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:19,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:19,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:19,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:19,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:19,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:19,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:19,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:19,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:19,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:19,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:19,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:19,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:19,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:19,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:19,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:19,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:19,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:19,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:19,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:19,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:19,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:19,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:19,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:19,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:19,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:19,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:19,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:19,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:19,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:19,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:19,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:19,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:19,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:26:19,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:19,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:19,143 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:19,144 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:19,144 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:19,144 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:19,144 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:19,145 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:19,145 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:19,145 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:19,145 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:19,145 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:19,146 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:19,146 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:19,146 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:19,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:19,147 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:19,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:19,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:19,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:19,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:19,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:19,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:19,148 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:19,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:19,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:19,149 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:19,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:19,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:19,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:19,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:19,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:19,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:19,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:19,150 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:19,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:19,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:19,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:19,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:19,151 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_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 692cfe8c8c302b29f29b9d33b1fef0f3efd9c990 [2021-10-11 02:26:19,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:19,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:19,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:19,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:19,442 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:19,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i [2021-10-11 02:26:19,515 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/data/456d3cae0/fea5d46ad1414929b3ac16f04ab262b4/FLAGa49f69007 [2021-10-11 02:26:20,055 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:20,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i [2021-10-11 02:26:20,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/data/456d3cae0/fea5d46ad1414929b3ac16f04ab262b4/FLAGa49f69007 [2021-10-11 02:26:20,359 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/data/456d3cae0/fea5d46ad1414929b3ac16f04ab262b4 [2021-10-11 02:26:20,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:20,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:20,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:20,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:20,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:20,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:20" (1/1) ... [2021-10-11 02:26:20,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10754e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20, skipping insertion in model container [2021-10-11 02:26:20,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:20" (1/1) ... [2021-10-11 02:26:20,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:20,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:20,654 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i[950,963] [2021-10-11 02:26:20,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:20,845 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:20,859 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i[950,963] [2021-10-11 02:26:20,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:20,998 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:20,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20 WrapperNode [2021-10-11 02:26:20,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:21,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:21,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:21,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:21,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20" (1/1) ... [2021-10-11 02:26:21,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20" (1/1) ... [2021-10-11 02:26:21,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:21,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:21,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:21,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:21,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20" (1/1) ... [2021-10-11 02:26:21,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20" (1/1) ... [2021-10-11 02:26:21,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20" (1/1) ... [2021-10-11 02:26:21,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20" (1/1) ... [2021-10-11 02:26:21,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20" (1/1) ... [2021-10-11 02:26:21,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20" (1/1) ... [2021-10-11 02:26:21,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20" (1/1) ... [2021-10-11 02:26:21,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:21,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:21,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:21,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:21,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:26:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:26:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-11 02:26:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:26:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-10-11 02:26:21,206 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-10-11 02:26:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-10-11 02:26:21,208 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-10-11 02:26:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-10-11 02:26:21,208 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-10-11 02:26:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-11 02:26:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:21,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:21,211 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-11 02:26:21,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:21,674 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-11 02:26:21,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:21 BoogieIcfgContainer [2021-10-11 02:26:21,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:21,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:21,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:21,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:21,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:20" (1/3) ... [2021-10-11 02:26:21,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5041b6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:21, skipping insertion in model container [2021-10-11 02:26:21,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:20" (2/3) ... [2021-10-11 02:26:21,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5041b6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:21, skipping insertion in model container [2021-10-11 02:26:21,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:21" (3/3) ... [2021-10-11 02:26:21,686 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2021-10-11 02:26:21,710 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-11 02:26:21,711 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:21,714 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:26:21,715 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-11 02:26:21,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,742 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,742 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,743 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,743 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,743 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,745 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,745 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,745 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,746 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,746 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,746 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,748 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,748 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,749 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,749 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,749 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,750 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,750 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,751 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,751 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,753 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,753 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,754 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,754 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,761 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,761 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,761 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,762 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,764 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,764 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,764 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,764 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-11 02:26:21,766 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-11 02:26:21,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:26:21,800 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:21,800 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:21,800 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:21,801 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:21,801 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:21,801 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:21,801 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:21,801 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:21,813 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-11 02:26:21,815 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 161 flow [2021-10-11 02:26:21,819 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 161 flow [2021-10-11 02:26:21,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-10-11 02:26:21,911 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-10-11 02:26:21,912 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-11 02:26:21,929 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 51 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-10-11 02:26:21,932 INFO L116 LiptonReduction]: Number of co-enabled transitions 1212 [2021-10-11 02:26:25,073 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:26:25,380 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-10-11 02:26:25,495 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-10-11 02:26:25,515 INFO L131 LiptonReduction]: Checked pairs total: 2136 [2021-10-11 02:26:25,515 INFO L133 LiptonReduction]: Total number of compositions: 62 [2021-10-11 02:26:25,521 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2021-10-11 02:26:25,542 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2021-10-11 02:26:25,544 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2021-10-11 02:26:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:26:25,550 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:25,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:25,551 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:25,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:25,557 INFO L82 PathProgramCache]: Analyzing trace with hash -301136603, now seen corresponding path program 1 times [2021-10-11 02:26:25,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:25,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221134542] [2021-10-11 02:26:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:25,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221134542] [2021-10-11 02:26:25,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:25,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:26:25,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402814566] [2021-10-11 02:26:25,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:25,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:25,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:25,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:25,830 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2021-10-11 02:26:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:25,890 INFO L93 Difference]: Finished difference Result 340 states and 895 transitions. [2021-10-11 02:26:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:25,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:26:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:25,904 INFO L225 Difference]: With dead ends: 340 [2021-10-11 02:26:25,905 INFO L226 Difference]: Without dead ends: 232 [2021-10-11 02:26:25,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:25,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-11 02:26:25,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 210. [2021-10-11 02:26:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2021-10-11 02:26:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 547 transitions. [2021-10-11 02:26:25,965 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 547 transitions. Word has length 8 [2021-10-11 02:26:25,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:25,966 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 547 transitions. [2021-10-11 02:26:25,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:25,966 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 547 transitions. [2021-10-11 02:26:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:26:25,968 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:25,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:25,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:25,968 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:25,969 INFO L82 PathProgramCache]: Analyzing trace with hash -761965005, now seen corresponding path program 1 times [2021-10-11 02:26:25,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:25,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929336787] [2021-10-11 02:26:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:26,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:26,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929336787] [2021-10-11 02:26:26,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:26,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:26:26,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433646128] [2021-10-11 02:26:26,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:26,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:26,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:26,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:26,046 INFO L87 Difference]: Start difference. First operand 210 states and 547 transitions. Second operand 3 states. [2021-10-11 02:26:26,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:26,054 INFO L93 Difference]: Finished difference Result 202 states and 521 transitions. [2021-10-11 02:26:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:26,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2021-10-11 02:26:26,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:26,062 INFO L225 Difference]: With dead ends: 202 [2021-10-11 02:26:26,065 INFO L226 Difference]: Without dead ends: 202 [2021-10-11 02:26:26,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-11 02:26:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 186. [2021-10-11 02:26:26,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2021-10-11 02:26:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 485 transitions. [2021-10-11 02:26:26,097 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 485 transitions. Word has length 9 [2021-10-11 02:26:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:26,097 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 485 transitions. [2021-10-11 02:26:26,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 485 transitions. [2021-10-11 02:26:26,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:26:26,101 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:26,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:26,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:26,103 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:26,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:26,103 INFO L82 PathProgramCache]: Analyzing trace with hash -745317602, now seen corresponding path program 1 times [2021-10-11 02:26:26,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:26,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880441487] [2021-10-11 02:26:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:26,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880441487] [2021-10-11 02:26:26,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:26,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:26,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175284074] [2021-10-11 02:26:26,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:26,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:26,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:26,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:26,242 INFO L87 Difference]: Start difference. First operand 186 states and 485 transitions. Second operand 4 states. [2021-10-11 02:26:26,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:26,275 INFO L93 Difference]: Finished difference Result 208 states and 519 transitions. [2021-10-11 02:26:26,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:26,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:26:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:26,281 INFO L225 Difference]: With dead ends: 208 [2021-10-11 02:26:26,281 INFO L226 Difference]: Without dead ends: 208 [2021-10-11 02:26:26,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-11 02:26:26,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 180. [2021-10-11 02:26:26,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2021-10-11 02:26:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 463 transitions. [2021-10-11 02:26:26,310 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 463 transitions. Word has length 9 [2021-10-11 02:26:26,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:26,310 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 463 transitions. [2021-10-11 02:26:26,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 463 transitions. [2021-10-11 02:26:26,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:26:26,324 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:26,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:26,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:26:26,324 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:26,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:26,325 INFO L82 PathProgramCache]: Analyzing trace with hash -2146096176, now seen corresponding path program 1 times [2021-10-11 02:26:26,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:26,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307230424] [2021-10-11 02:26:26,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:26,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307230424] [2021-10-11 02:26:26,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:26,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:26,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870635588] [2021-10-11 02:26:26,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:26,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:26,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:26,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:26,437 INFO L87 Difference]: Start difference. First operand 180 states and 463 transitions. Second operand 4 states. [2021-10-11 02:26:26,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:26,493 INFO L93 Difference]: Finished difference Result 209 states and 490 transitions. [2021-10-11 02:26:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:26,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:26:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:26,496 INFO L225 Difference]: With dead ends: 209 [2021-10-11 02:26:26,496 INFO L226 Difference]: Without dead ends: 151 [2021-10-11 02:26:26,497 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 [2021-10-11 02:26:26,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-11 02:26:26,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-10-11 02:26:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-10-11 02:26:26,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 348 transitions. [2021-10-11 02:26:26,521 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 348 transitions. Word has length 10 [2021-10-11 02:26:26,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:26,522 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 348 transitions. [2021-10-11 02:26:26,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:26,523 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 348 transitions. [2021-10-11 02:26:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:26:26,524 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:26,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:26,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:26:26,524 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:26,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:26,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1675797027, now seen corresponding path program 1 times [2021-10-11 02:26:26,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:26,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538173829] [2021-10-11 02:26:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:26,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538173829] [2021-10-11 02:26:26,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:26,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:26,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834609627] [2021-10-11 02:26:26,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:26,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:26,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:26,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:26,624 INFO L87 Difference]: Start difference. First operand 151 states and 348 transitions. Second operand 5 states. [2021-10-11 02:26:26,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:26,668 INFO L93 Difference]: Finished difference Result 148 states and 315 transitions. [2021-10-11 02:26:26,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:26:26,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-10-11 02:26:26,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:26,670 INFO L225 Difference]: With dead ends: 148 [2021-10-11 02:26:26,670 INFO L226 Difference]: Without dead ends: 111 [2021-10-11 02:26:26,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:26,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-11 02:26:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2021-10-11 02:26:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-10-11 02:26:26,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 225 transitions. [2021-10-11 02:26:26,675 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 225 transitions. Word has length 11 [2021-10-11 02:26:26,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:26,676 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 225 transitions. [2021-10-11 02:26:26,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:26,676 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 225 transitions. [2021-10-11 02:26:26,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:26:26,682 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:26,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:26,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:26:26,683 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:26,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:26,683 INFO L82 PathProgramCache]: Analyzing trace with hash 170235503, now seen corresponding path program 1 times [2021-10-11 02:26:26,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:26,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676712191] [2021-10-11 02:26:26,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:26,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676712191] [2021-10-11 02:26:26,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:26,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:26,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481890139] [2021-10-11 02:26:26,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:26:26,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:26,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:26:26,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:26,782 INFO L87 Difference]: Start difference. First operand 109 states and 225 transitions. Second operand 6 states. [2021-10-11 02:26:26,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:26,841 INFO L93 Difference]: Finished difference Result 103 states and 211 transitions. [2021-10-11 02:26:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:26:26,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-10-11 02:26:26,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:26,843 INFO L225 Difference]: With dead ends: 103 [2021-10-11 02:26:26,843 INFO L226 Difference]: Without dead ends: 84 [2021-10-11 02:26:26,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:26:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-11 02:26:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2021-10-11 02:26:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-10-11 02:26:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 156 transitions. [2021-10-11 02:26:26,848 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 156 transitions. Word has length 13 [2021-10-11 02:26:26,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:26,848 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 156 transitions. [2021-10-11 02:26:26,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:26:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 156 transitions. [2021-10-11 02:26:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:26:26,849 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:26,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:26,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:26:26,849 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:26,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash -523743225, now seen corresponding path program 1 times [2021-10-11 02:26:26,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:26,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409226517] [2021-10-11 02:26:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:26,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409226517] [2021-10-11 02:26:26,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:26,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:26,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023593720] [2021-10-11 02:26:26,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:26,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:26,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:26,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:26,948 INFO L87 Difference]: Start difference. First operand 76 states and 156 transitions. Second operand 4 states. [2021-10-11 02:26:26,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:26,985 INFO L93 Difference]: Finished difference Result 105 states and 209 transitions. [2021-10-11 02:26:26,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:26,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-10-11 02:26:26,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:26,986 INFO L225 Difference]: With dead ends: 105 [2021-10-11 02:26:26,986 INFO L226 Difference]: Without dead ends: 48 [2021-10-11 02:26:26,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:26,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-11 02:26:26,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-10-11 02:26:26,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-10-11 02:26:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 72 transitions. [2021-10-11 02:26:26,989 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 72 transitions. Word has length 16 [2021-10-11 02:26:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:26,992 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 72 transitions. [2021-10-11 02:26:26,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:26,993 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 72 transitions. [2021-10-11 02:26:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:26:26,993 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:26,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:26,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:26:26,994 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:26,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1399962537, now seen corresponding path program 2 times [2021-10-11 02:26:26,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:26,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038734804] [2021-10-11 02:26:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:27,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038734804] [2021-10-11 02:26:27,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:27,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:27,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964837250] [2021-10-11 02:26:27,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:27,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:27,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:27,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:27,103 INFO L87 Difference]: Start difference. First operand 44 states and 72 transitions. Second operand 5 states. [2021-10-11 02:26:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:27,131 INFO L93 Difference]: Finished difference Result 59 states and 96 transitions. [2021-10-11 02:26:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:26:27,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-10-11 02:26:27,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:27,132 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:26:27,132 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 02:26:27,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:27,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 02:26:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-11 02:26:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:26:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2021-10-11 02:26:27,134 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 16 [2021-10-11 02:26:27,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:27,134 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 52 transitions. [2021-10-11 02:26:27,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 52 transitions. [2021-10-11 02:26:27,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:26:27,135 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:27,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:27,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:26:27,135 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:27,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:27,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2077613865, now seen corresponding path program 3 times [2021-10-11 02:26:27,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:27,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899621657] [2021-10-11 02:26:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:27,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899621657] [2021-10-11 02:26:27,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:27,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:27,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770971373] [2021-10-11 02:26:27,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:27,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:27,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:27,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:27,187 INFO L87 Difference]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2021-10-11 02:26:27,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:27,212 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2021-10-11 02:26:27,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:27,212 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-10-11 02:26:27,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:27,213 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:26:27,213 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:26:27,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:27,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:26:27,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:26:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:26:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:26:27,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-11 02:26:27,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:27,215 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:26:27,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:26:27,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:26:27,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:26:27,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:27 BasicIcfg [2021-10-11 02:26:27,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:27,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:27,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:27,220 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:27,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:21" (3/4) ... [2021-10-11 02:26:27,225 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:26:27,231 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-10-11 02:26:27,231 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-10-11 02:26:27,231 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-10-11 02:26:27,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:26:27,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:26:27,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:26:27,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:26:27,291 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1b36e20-cd4f-4c16-9c43-4ffcd19f787d/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:27,294 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:27,300 INFO L168 Benchmark]: Toolchain (without parser) took 6931.29 ms. Allocated memory was 132.1 MB in the beginning and 207.6 MB in the end (delta: 75.5 MB). Free memory was 92.1 MB in the beginning and 104.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 63.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:27,301 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 132.1 MB. Free memory is still 110.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:27,301 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.74 ms. Allocated memory is still 132.1 MB. Free memory was 92.0 MB in the beginning and 85.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:27,302 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.94 ms. Allocated memory is still 132.1 MB. Free memory was 85.3 MB in the beginning and 83.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:27,302 INFO L168 Benchmark]: Boogie Preprocessor took 39.48 ms. Allocated memory is still 132.1 MB. Free memory was 83.3 MB in the beginning and 82.4 MB in the end (delta: 920.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:27,303 INFO L168 Benchmark]: RCFGBuilder took 569.88 ms. Allocated memory is still 132.1 MB. Free memory was 82.4 MB in the beginning and 60.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:27,303 INFO L168 Benchmark]: TraceAbstraction took 5541.74 ms. Allocated memory was 132.1 MB in the beginning and 207.6 MB in the end (delta: 75.5 MB). Free memory was 60.2 MB in the beginning and 106.2 MB in the end (delta: -46.0 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:27,303 INFO L168 Benchmark]: Witness Printer took 74.40 ms. Allocated memory is still 207.6 MB. Free memory was 106.2 MB in the beginning and 104.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:27,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 132.1 MB. Free memory is still 110.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 634.74 ms. Allocated memory is still 132.1 MB. Free memory was 92.0 MB in the beginning and 85.3 MB in the end (delta: 6.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.94 ms. Allocated memory is still 132.1 MB. Free memory was 85.3 MB in the beginning and 83.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.48 ms. Allocated memory is still 132.1 MB. Free memory was 83.3 MB in the beginning and 82.4 MB in the end (delta: 920.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 569.88 ms. Allocated memory is still 132.1 MB. Free memory was 82.4 MB in the beginning and 60.2 MB in the end (delta: 22.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5541.74 ms. Allocated memory was 132.1 MB in the beginning and 207.6 MB in the end (delta: 75.5 MB). Free memory was 60.2 MB in the beginning and 106.2 MB in the end (delta: -46.0 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. * Witness Printer took 74.40 ms. Allocated memory is still 207.6 MB. Free memory was 106.2 MB in the beginning and 104.0 MB in the end (delta: 2.2 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 769 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 27 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 45 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.6s, 81 PlacesBefore, 30 PlacesAfterwards, 73 TransitionsBefore, 20 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 2136 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: 5.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 159 SDtfs, 150 SDslu, 199 SDs, 0 SdLazy, 128 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 9 MinimizatonAttempts, 80 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 5445 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...