./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_8.c --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_b971d49e-52f7-468b-92ef-7d76fd09ba80/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b971d49e-52f7-468b-92ef-7d76fd09ba80/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_b971d49e-52f7-468b-92ef-7d76fd09ba80/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b971d49e-52f7-468b-92ef-7d76fd09ba80/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_8.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b971d49e-52f7-468b-92ef-7d76fd09ba80/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_b971d49e-52f7-468b-92ef-7d76fd09ba80/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 37d0ed05d77a0379c9ed98058bf2f327252773ce ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:24:22,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:22,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:23,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:23,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:23,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:23,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:23,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:23,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:23,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:23,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:23,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:23,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:23,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:23,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:23,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:23,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:23,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:23,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:23,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:23,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:23,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:23,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:23,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:23,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:23,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:23,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:23,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:23,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:23,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:23,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:23,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:23,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:23,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:23,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:23,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:23,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:23,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:23,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:23,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:23,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:23,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b971d49e-52f7-468b-92ef-7d76fd09ba80/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:23,117 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:23,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:23,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:23,119 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:23,119 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:23,120 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:23,120 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:23,120 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:23,120 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:23,120 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:23,121 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:23,122 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:23,122 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:23,122 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:23,122 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:23,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:23,123 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:23,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:23,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:23,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:23,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:23,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:23,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:23,125 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:23,125 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:23,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:23,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:23,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:23,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:23,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:23,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:23,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:23,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:23,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:23,128 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:23,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:23,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:23,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:23,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:23,129 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_b971d49e-52f7-468b-92ef-7d76fd09ba80/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b971d49e-52f7-468b-92ef-7d76fd09ba80/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37d0ed05d77a0379c9ed98058bf2f327252773ce [2021-10-11 02:24:23,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:23,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:23,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:23,409 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:23,413 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:23,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b971d49e-52f7-468b-92ef-7d76fd09ba80/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/locks/test_locks_8.c [2021-10-11 02:24:23,478 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b971d49e-52f7-468b-92ef-7d76fd09ba80/bin/utaipan-WLngWcDbfI/data/867784537/aeb7112fec924fcab1098d396bed0a7b/FLAG4cc535d57 [2021-10-11 02:24:24,006 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:24,009 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b971d49e-52f7-468b-92ef-7d76fd09ba80/sv-benchmarks/c/locks/test_locks_8.c [2021-10-11 02:24:24,018 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b971d49e-52f7-468b-92ef-7d76fd09ba80/bin/utaipan-WLngWcDbfI/data/867784537/aeb7112fec924fcab1098d396bed0a7b/FLAG4cc535d57 [2021-10-11 02:24:24,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b971d49e-52f7-468b-92ef-7d76fd09ba80/bin/utaipan-WLngWcDbfI/data/867784537/aeb7112fec924fcab1098d396bed0a7b [2021-10-11 02:24:24,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:24,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:24,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:24,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:24,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:24,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:24" (1/1) ... [2021-10-11 02:24:24,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d15c55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24, skipping insertion in model container [2021-10-11 02:24:24,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:24" (1/1) ... [2021-10-11 02:24:24,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:24,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:24,547 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_b971d49e-52f7-468b-92ef-7d76fd09ba80/sv-benchmarks/c/locks/test_locks_8.c[3218,3231] [2021-10-11 02:24:24,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:24,560 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:24,582 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_b971d49e-52f7-468b-92ef-7d76fd09ba80/sv-benchmarks/c/locks/test_locks_8.c[3218,3231] [2021-10-11 02:24:24,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:24,596 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:24,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24 WrapperNode [2021-10-11 02:24:24,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:24,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:24,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:24,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:24,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24" (1/1) ... [2021-10-11 02:24:24,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24" (1/1) ... [2021-10-11 02:24:24,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:24,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:24,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:24,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:24,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24" (1/1) ... [2021-10-11 02:24:24,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24" (1/1) ... [2021-10-11 02:24:24,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24" (1/1) ... [2021-10-11 02:24:24,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24" (1/1) ... [2021-10-11 02:24:24,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24" (1/1) ... [2021-10-11 02:24:24,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24" (1/1) ... [2021-10-11 02:24:24,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24" (1/1) ... [2021-10-11 02:24:24,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:24,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:24,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:24,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:24,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b971d49e-52f7-468b-92ef-7d76fd09ba80/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 02:24:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:24,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:24,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:25,325 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:25,325 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:24:25,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:25 BoogieIcfgContainer [2021-10-11 02:24:25,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:25,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:25,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:25,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:25,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:24" (1/3) ... [2021-10-11 02:24:25,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b10b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:25, skipping insertion in model container [2021-10-11 02:24:25,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:24" (2/3) ... [2021-10-11 02:24:25,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b10b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:25, skipping insertion in model container [2021-10-11 02:24:25,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:25" (3/3) ... [2021-10-11 02:24:25,335 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2021-10-11 02:24:25,348 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:25,351 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:24:25,362 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:24:25,384 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:25,385 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:25,385 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:25,385 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:25,385 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:25,385 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:25,385 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:25,385 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:25,396 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-10-11 02:24:25,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:24:25,400 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:25,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:24:25,401 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:25,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:25,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1274705615, now seen corresponding path program 1 times [2021-10-11 02:24:25,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:25,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866863050] [2021-10-11 02:24:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:25,664 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 02:24:25,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866863050] [2021-10-11 02:24:25,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:25,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:25,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796980796] [2021-10-11 02:24:25,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:25,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:25,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:25,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:25,694 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2021-10-11 02:24:25,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:25,772 INFO L93 Difference]: Finished difference Result 50 states and 81 transitions. [2021-10-11 02:24:25,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:25,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:24:25,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:25,783 INFO L225 Difference]: With dead ends: 50 [2021-10-11 02:24:25,783 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:24:25,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 02:24:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:24:25,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 21. [2021-10-11 02:24:25,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:24:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 35 transitions. [2021-10-11 02:24:25,819 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 35 transitions. Word has length 6 [2021-10-11 02:24:25,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:25,819 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 35 transitions. [2021-10-11 02:24:25,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 35 transitions. [2021-10-11 02:24:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:24:25,820 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:25,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:25,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:25,821 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:25,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:25,822 INFO L82 PathProgramCache]: Analyzing trace with hash 861382397, now seen corresponding path program 1 times [2021-10-11 02:24:25,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:25,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321953803] [2021-10-11 02:24:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:25,898 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 02:24:25,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321953803] [2021-10-11 02:24:25,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:25,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:25,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939934307] [2021-10-11 02:24:25,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:25,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:25,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:25,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:25,909 INFO L87 Difference]: Start difference. First operand 21 states and 35 transitions. Second operand 4 states. [2021-10-11 02:24:25,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:25,943 INFO L93 Difference]: Finished difference Result 39 states and 63 transitions. [2021-10-11 02:24:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:25,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:24:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:25,947 INFO L225 Difference]: With dead ends: 39 [2021-10-11 02:24:25,947 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 02:24:25,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 02:24:25,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 02:24:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 21. [2021-10-11 02:24:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:24:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 34 transitions. [2021-10-11 02:24:25,959 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 34 transitions. Word has length 7 [2021-10-11 02:24:25,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:25,960 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 34 transitions. [2021-10-11 02:24:25,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:25,960 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 34 transitions. [2021-10-11 02:24:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:24:25,960 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:25,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:25,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:25,961 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:25,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:25,962 INFO L82 PathProgramCache]: Analyzing trace with hash 933264868, now seen corresponding path program 1 times [2021-10-11 02:24:25,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:25,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935957606] [2021-10-11 02:24:25,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:26,040 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 02:24:26,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935957606] [2021-10-11 02:24:26,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:26,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:26,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869873082] [2021-10-11 02:24:26,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:26,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:26,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:26,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:26,043 INFO L87 Difference]: Start difference. First operand 21 states and 34 transitions. Second operand 4 states. [2021-10-11 02:24:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:26,061 INFO L93 Difference]: Finished difference Result 37 states and 58 transitions. [2021-10-11 02:24:26,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:26,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:24:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:26,062 INFO L225 Difference]: With dead ends: 37 [2021-10-11 02:24:26,062 INFO L226 Difference]: Without dead ends: 35 [2021-10-11 02:24:26,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 02:24:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-11 02:24:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2021-10-11 02:24:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:24:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 33 transitions. [2021-10-11 02:24:26,067 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 33 transitions. Word has length 8 [2021-10-11 02:24:26,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:26,067 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 33 transitions. [2021-10-11 02:24:26,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 33 transitions. [2021-10-11 02:24:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:24:26,068 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:26,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:26,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:24:26,068 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:26,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1133345486, now seen corresponding path program 1 times [2021-10-11 02:24:26,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:26,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858910612] [2021-10-11 02:24:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:26,139 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 02:24:26,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858910612] [2021-10-11 02:24:26,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:26,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:26,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077628588] [2021-10-11 02:24:26,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:26,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:26,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:26,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:26,143 INFO L87 Difference]: Start difference. First operand 21 states and 33 transitions. Second operand 4 states. [2021-10-11 02:24:26,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:26,175 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2021-10-11 02:24:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:26,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:24:26,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:26,176 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:24:26,176 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:24:26,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 02:24:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:24:26,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 21. [2021-10-11 02:24:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:24:26,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 32 transitions. [2021-10-11 02:24:26,185 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 32 transitions. Word has length 9 [2021-10-11 02:24:26,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:26,185 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 32 transitions. [2021-10-11 02:24:26,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:26,185 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 32 transitions. [2021-10-11 02:24:26,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:24:26,186 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:26,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:26,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:24:26,186 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:26,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:26,186 INFO L82 PathProgramCache]: Analyzing trace with hash -773756679, now seen corresponding path program 1 times [2021-10-11 02:24:26,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:26,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626215159] [2021-10-11 02:24:26,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:26,225 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 02:24:26,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626215159] [2021-10-11 02:24:26,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:26,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:26,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318884971] [2021-10-11 02:24:26,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:26,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:26,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:26,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:26,227 INFO L87 Difference]: Start difference. First operand 21 states and 32 transitions. Second operand 4 states. [2021-10-11 02:24:26,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:26,243 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2021-10-11 02:24:26,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:26,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:24:26,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:26,244 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:24:26,244 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 02:24:26,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 02:24:26,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 02:24:26,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2021-10-11 02:24:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:24:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2021-10-11 02:24:26,248 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2021-10-11 02:24:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:26,248 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2021-10-11 02:24:26,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2021-10-11 02:24:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:24:26,249 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:26,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:26,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:24:26,249 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:26,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:26,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1783562087, now seen corresponding path program 1 times [2021-10-11 02:24:26,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:26,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495492630] [2021-10-11 02:24:26,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:26,287 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 02:24:26,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495492630] [2021-10-11 02:24:26,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:26,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:26,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067262412] [2021-10-11 02:24:26,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:26,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:26,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:26,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:26,290 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 4 states. [2021-10-11 02:24:26,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:26,305 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2021-10-11 02:24:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:26,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:24:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:26,306 INFO L225 Difference]: With dead ends: 31 [2021-10-11 02:24:26,306 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:24:26,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 02:24:26,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:24:26,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2021-10-11 02:24:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:24:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2021-10-11 02:24:26,310 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 11 [2021-10-11 02:24:26,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:26,310 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 30 transitions. [2021-10-11 02:24:26,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2021-10-11 02:24:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:24:26,311 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:26,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:26,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:24:26,311 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:26,312 INFO L82 PathProgramCache]: Analyzing trace with hash -543934450, now seen corresponding path program 1 times [2021-10-11 02:24:26,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:26,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560359285] [2021-10-11 02:24:26,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:26,362 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 02:24:26,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560359285] [2021-10-11 02:24:26,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:26,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:26,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625146971] [2021-10-11 02:24:26,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:26,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:26,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:26,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:26,364 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. Second operand 4 states. [2021-10-11 02:24:26,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:26,379 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-10-11 02:24:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:26,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:24:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:26,380 INFO L225 Difference]: With dead ends: 29 [2021-10-11 02:24:26,380 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 02:24:26,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 02:24:26,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 02:24:26,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-10-11 02:24:26,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:24:26,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2021-10-11 02:24:26,384 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 12 [2021-10-11 02:24:26,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:26,384 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2021-10-11 02:24:26,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:26,384 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2021-10-11 02:24:26,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:24:26,385 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:26,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:26,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:24:26,385 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:26,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:26,386 INFO L82 PathProgramCache]: Analyzing trace with hash 318117276, now seen corresponding path program 1 times [2021-10-11 02:24:26,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:26,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148829117] [2021-10-11 02:24:26,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:26,433 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 02:24:26,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148829117] [2021-10-11 02:24:26,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:26,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:24:26,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14854003] [2021-10-11 02:24:26,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:26,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:26,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:26,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:24:26,436 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand 4 states. [2021-10-11 02:24:26,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:26,455 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2021-10-11 02:24:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:26,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2021-10-11 02:24:26,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:26,460 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:24:26,460 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:26,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 02:24:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:26,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:26,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:26,461 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-11 02:24:26,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:26,461 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:26,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:26,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:26,462 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:26,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:24:26,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:24:26,481 INFO L262 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2021-10-11 02:24:26,481 INFO L262 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2021-10-11 02:24:26,481 INFO L262 CegarLoopResult]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2021-10-11 02:24:26,481 INFO L265 CegarLoopResult]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2021-10-11 02:24:26,481 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:24:26,482 INFO L262 CegarLoopResult]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2021-10-11 02:24:26,482 INFO L265 CegarLoopResult]: At program point L136(lines 6 137) the Hoare annotation is: true [2021-10-11 02:24:26,482 INFO L262 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2021-10-11 02:24:26,482 INFO L262 CegarLoopResult]: For program point L37(lines 37 39) no Hoare annotation was computed. [2021-10-11 02:24:26,482 INFO L262 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2021-10-11 02:24:26,482 INFO L258 CegarLoopResult]: At program point L128-1(lines 7 137) the Hoare annotation is: false [2021-10-11 02:24:26,483 INFO L262 CegarLoopResult]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2021-10-11 02:24:26,483 INFO L262 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2021-10-11 02:24:26,483 INFO L262 CegarLoopResult]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2021-10-11 02:24:26,483 INFO L262 CegarLoopResult]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2021-10-11 02:24:26,483 INFO L262 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2021-10-11 02:24:26,484 INFO L262 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2021-10-11 02:24:26,484 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 135) no Hoare annotation was computed. [2021-10-11 02:24:26,484 INFO L262 CegarLoopResult]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2021-10-11 02:24:26,484 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:24:26,484 INFO L262 CegarLoopResult]: For program point L108(line 108) no Hoare annotation was computed. [2021-10-11 02:24:26,484 INFO L265 CegarLoopResult]: At program point L133(lines 7 137) the Hoare annotation is: true [2021-10-11 02:24:26,484 INFO L262 CegarLoopResult]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2021-10-11 02:24:26,484 INFO L262 CegarLoopResult]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2021-10-11 02:24:26,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:26 BoogieIcfgContainer [2021-10-11 02:24:26,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:26,491 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:26,491 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:26,491 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:26,491 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:25" (3/4) ... [2021-10-11 02:24:26,493 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:26,501 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-11 02:24:26,502 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:24:26,502 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:24:26,502 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:24:26,568 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b971d49e-52f7-468b-92ef-7d76fd09ba80/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:26,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:26,569 INFO L168 Benchmark]: Toolchain (without parser) took 2219.65 ms. Allocated memory is still 94.4 MB. Free memory was 69.0 MB in the beginning and 60.5 MB in the end (delta: 8.5 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:26,570 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 77.6 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:26,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.23 ms. Allocated memory is still 94.4 MB. Free memory was 68.9 MB in the beginning and 58.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:26,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.99 ms. Allocated memory is still 94.4 MB. Free memory was 58.6 MB in the beginning and 57.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:26,571 INFO L168 Benchmark]: Boogie Preprocessor took 43.33 ms. Allocated memory is still 94.4 MB. Free memory was 57.1 MB in the beginning and 55.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:26,571 INFO L168 Benchmark]: RCFGBuilder took 649.15 ms. Allocated memory is still 94.4 MB. Free memory was 55.8 MB in the beginning and 63.3 MB in the end (delta: -7.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:26,572 INFO L168 Benchmark]: TraceAbstraction took 1161.75 ms. Allocated memory is still 94.4 MB. Free memory was 62.6 MB in the beginning and 64.0 MB in the end (delta: -1.4 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:26,572 INFO L168 Benchmark]: Witness Printer took 77.46 ms. Allocated memory is still 94.4 MB. Free memory was 64.0 MB in the beginning and 60.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:26,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 77.6 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.23 ms. Allocated memory is still 94.4 MB. Free memory was 68.9 MB in the beginning and 58.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.99 ms. Allocated memory is still 94.4 MB. Free memory was 58.6 MB in the beginning and 57.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.33 ms. Allocated memory is still 94.4 MB. Free memory was 57.1 MB in the beginning and 55.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 649.15 ms. Allocated memory is still 94.4 MB. Free memory was 55.8 MB in the beginning and 63.3 MB in the end (delta: -7.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1161.75 ms. Allocated memory is still 94.4 MB. Free memory was 62.6 MB in the beginning and 64.0 MB in the end (delta: -1.4 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. * Witness Printer took 77.46 ms. Allocated memory is still 94.4 MB. Free memory was 64.0 MB in the beginning and 60.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 135]: 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 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 241 SDtfs, 202 SDslu, 344 SDs, 0 SdLazy, 72 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 84 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 2844 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...