./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba --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 df07a51f7e516d27edfc43ba7975842330a5e8f5d0694898dfea4c8b236ae732 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:16:13,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:16:13,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:16:13,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:16:13,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:16:13,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:16:13,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:16:13,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:16:13,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:16:13,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:16:13,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:16:13,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:16:13,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:16:13,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:16:13,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:16:13,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:16:13,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:16:13,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:16:13,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:16:13,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:16:13,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:16:13,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:16:13,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:16:13,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:16:13,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:16:13,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:16:13,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:16:13,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:16:13,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:16:13,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:16:13,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:16:13,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:16:13,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:16:13,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:16:13,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:16:13,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:16:13,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:16:13,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:16:13,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:16:13,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:16:13,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:16:13,575 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 00:16:13,598 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:16:13,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:16:13,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:16:13,599 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:16:13,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:16:13,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:16:13,600 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:16:13,601 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:16:13,601 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:16:13,601 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:16:13,601 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:16:13,602 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:16:13,602 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:16:13,602 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:16:13,603 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:16:13,603 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:16:13,603 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:16:13,603 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:16:13,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:16:13,605 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:16:13,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:16:13,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:16:13,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:16:13,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:16:13,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:16:13,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:16:13,606 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:16:13,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:16:13,607 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:16:13,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:16:13,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:16:13,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:16:13,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:16:13,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:16:13,608 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:16:13,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:16:13,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:16:13,609 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:16:13,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:16:13,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:16:13,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:16:13,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df07a51f7e516d27edfc43ba7975842330a5e8f5d0694898dfea4c8b236ae732 [2022-11-22 00:16:13,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:16:13,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:16:13,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:16:13,942 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:16:13,942 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:16:13,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/eca-rers2012/Problem02_label51.c [2022-11-22 00:16:17,076 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:16:17,375 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:16:17,388 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/sv-benchmarks/c/eca-rers2012/Problem02_label51.c [2022-11-22 00:16:17,401 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/data/bf3de944a/bd16b45e8f6e42bdadc50531fd2fcc12/FLAG591dc9c18 [2022-11-22 00:16:17,417 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/data/bf3de944a/bd16b45e8f6e42bdadc50531fd2fcc12 [2022-11-22 00:16:17,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:16:17,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:16:17,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:16:17,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:16:17,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:16:17,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:16:17" (1/1) ... [2022-11-22 00:16:17,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47998768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:17, skipping insertion in model container [2022-11-22 00:16:17,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:16:17" (1/1) ... [2022-11-22 00:16:17,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:16:17,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:16:17,826 WARN L237 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_45214c39-b560-447e-a6a7-1dc6c46795f6/sv-benchmarks/c/eca-rers2012/Problem02_label51.c[17924,17937] [2022-11-22 00:16:17,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:16:17,909 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:16:18,015 WARN L237 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_45214c39-b560-447e-a6a7-1dc6c46795f6/sv-benchmarks/c/eca-rers2012/Problem02_label51.c[17924,17937] [2022-11-22 00:16:18,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:16:18,051 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:16:18,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18 WrapperNode [2022-11-22 00:16:18,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:16:18,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:16:18,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:16:18,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:16:18,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18" (1/1) ... [2022-11-22 00:16:18,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18" (1/1) ... [2022-11-22 00:16:18,144 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 668 [2022-11-22 00:16:18,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:16:18,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:16:18,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:16:18,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:16:18,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18" (1/1) ... [2022-11-22 00:16:18,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18" (1/1) ... [2022-11-22 00:16:18,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18" (1/1) ... [2022-11-22 00:16:18,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18" (1/1) ... [2022-11-22 00:16:18,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18" (1/1) ... [2022-11-22 00:16:18,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18" (1/1) ... [2022-11-22 00:16:18,201 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18" (1/1) ... [2022-11-22 00:16:18,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18" (1/1) ... [2022-11-22 00:16:18,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:16:18,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:16:18,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:16:18,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:16:18,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18" (1/1) ... [2022-11-22 00:16:18,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:16:18,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:16:18,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:16:18,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:16:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:16:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:16:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:16:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:16:18,440 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:16:18,442 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:16:19,594 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:16:19,890 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:16:19,891 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 00:16:19,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:16:19 BoogieIcfgContainer [2022-11-22 00:16:19,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:16:19,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:16:19,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:16:19,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:16:19,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:16:17" (1/3) ... [2022-11-22 00:16:19,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e7cef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:16:19, skipping insertion in model container [2022-11-22 00:16:19,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:16:18" (2/3) ... [2022-11-22 00:16:19,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e7cef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:16:19, skipping insertion in model container [2022-11-22 00:16:19,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:16:19" (3/3) ... [2022-11-22 00:16:19,906 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label51.c [2022-11-22 00:16:19,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:16:19,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:16:19,998 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:16:20,005 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3302fa7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:16:20,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 00:16:20,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:20,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-22 00:16:20,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:16:20,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:16:20,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:16:20,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:16:20,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1814577045, now seen corresponding path program 1 times [2022-11-22 00:16:20,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:16:20,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725020690] [2022-11-22 00:16:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:20,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:16:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:16:20,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:16:20,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725020690] [2022-11-22 00:16:20,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725020690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:16:20,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:16:20,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:16:20,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797212788] [2022-11-22 00:16:20,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:16:20,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:16:20,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:16:20,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:16:20,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:20,648 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:16:21,220 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2022-11-22 00:16:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:16:21,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-22 00:16:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:16:21,236 INFO L225 Difference]: With dead ends: 251 [2022-11-22 00:16:21,236 INFO L226 Difference]: Without dead ends: 163 [2022-11-22 00:16:21,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:21,243 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:16:21,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 00:16:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-22 00:16:21,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-11-22 00:16:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2022-11-22 00:16:21,291 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2022-11-22 00:16:21,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:16:21,292 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2022-11-22 00:16:21,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2022-11-22 00:16:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-22 00:16:21,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:16:21,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:16:21,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:16:21,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:16:21,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:16:21,297 INFO L85 PathProgramCache]: Analyzing trace with hash -483703880, now seen corresponding path program 1 times [2022-11-22 00:16:21,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:16:21,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511628955] [2022-11-22 00:16:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:21,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:16:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:16:21,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:16:21,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511628955] [2022-11-22 00:16:21,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511628955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:16:21,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:16:21,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:16:21,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607213587] [2022-11-22 00:16:21,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:16:21,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:16:21,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:16:21,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:16:21,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:21,524 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:21,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:16:21,959 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2022-11-22 00:16:21,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:16:21,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-11-22 00:16:21,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:16:21,962 INFO L225 Difference]: With dead ends: 405 [2022-11-22 00:16:21,962 INFO L226 Difference]: Without dead ends: 243 [2022-11-22 00:16:21,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:21,964 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:16:21,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 130 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 00:16:21,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-22 00:16:21,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2022-11-22 00:16:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4793388429752066) internal successors, (358), 242 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2022-11-22 00:16:21,979 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 85 [2022-11-22 00:16:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:16:21,980 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2022-11-22 00:16:21,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2022-11-22 00:16:22,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 00:16:22,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:16:22,001 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:16:22,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:16:22,002 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:16:22,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:16:22,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1578032880, now seen corresponding path program 1 times [2022-11-22 00:16:22,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:16:22,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706794605] [2022-11-22 00:16:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:22,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:16:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:16:22,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:16:22,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706794605] [2022-11-22 00:16:22,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706794605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:16:22,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:16:22,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:16:22,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692774990] [2022-11-22 00:16:22,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:16:22,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:16:22,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:16:22,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:16:22,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:22,093 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:22,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:16:22,463 INFO L93 Difference]: Finished difference Result 725 states and 1071 transitions. [2022-11-22 00:16:22,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:16:22,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-22 00:16:22,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:16:22,465 INFO L225 Difference]: With dead ends: 725 [2022-11-22 00:16:22,466 INFO L226 Difference]: Without dead ends: 483 [2022-11-22 00:16:22,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:22,468 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 104 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:16:22,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 30 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:16:22,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-22 00:16:22,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2022-11-22 00:16:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.396265560165975) internal successors, (673), 482 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 673 transitions. [2022-11-22 00:16:22,507 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 673 transitions. Word has length 95 [2022-11-22 00:16:22,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:16:22,509 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 673 transitions. [2022-11-22 00:16:22,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 673 transitions. [2022-11-22 00:16:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-22 00:16:22,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:16:22,520 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:16:22,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:16:22,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:16:22,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:16:22,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1467801473, now seen corresponding path program 1 times [2022-11-22 00:16:22,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:16:22,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566235564] [2022-11-22 00:16:22,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:22,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:16:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:16:22,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:16:22,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566235564] [2022-11-22 00:16:22,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566235564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:16:22,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:16:22,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:16:22,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083254477] [2022-11-22 00:16:22,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:16:22,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:16:22,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:16:22,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:16:22,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:22,759 INFO L87 Difference]: Start difference. First operand 483 states and 673 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:23,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:16:23,134 INFO L93 Difference]: Finished difference Result 1125 states and 1545 transitions. [2022-11-22 00:16:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:16:23,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-11-22 00:16:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:16:23,139 INFO L225 Difference]: With dead ends: 1125 [2022-11-22 00:16:23,140 INFO L226 Difference]: Without dead ends: 563 [2022-11-22 00:16:23,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:23,153 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:16:23,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 23 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:16:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-11-22 00:16:23,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2022-11-22 00:16:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.2384341637010676) internal successors, (696), 562 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 696 transitions. [2022-11-22 00:16:23,186 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 696 transitions. Word has length 124 [2022-11-22 00:16:23,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:16:23,187 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 696 transitions. [2022-11-22 00:16:23,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:23,188 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 696 transitions. [2022-11-22 00:16:23,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-22 00:16:23,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:16:23,194 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:16:23,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:16:23,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:16:23,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:16:23,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1161391243, now seen corresponding path program 1 times [2022-11-22 00:16:23,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:16:23,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166299710] [2022-11-22 00:16:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:23,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:16:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:23,344 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:16:23,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:16:23,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166299710] [2022-11-22 00:16:23,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166299710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:16:23,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:16:23,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:16:23,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585481493] [2022-11-22 00:16:23,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:16:23,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:16:23,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:16:23,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:16:23,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:23,349 INFO L87 Difference]: Start difference. First operand 563 states and 696 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:16:23,660 INFO L93 Difference]: Finished difference Result 1605 states and 1990 transitions. [2022-11-22 00:16:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:16:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-11-22 00:16:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:16:23,666 INFO L225 Difference]: With dead ends: 1605 [2022-11-22 00:16:23,666 INFO L226 Difference]: Without dead ends: 1043 [2022-11-22 00:16:23,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:23,674 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 63 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:16:23,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 144 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:16:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-11-22 00:16:23,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 963. [2022-11-22 00:16:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.20997920997921) internal successors, (1164), 962 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:23,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1164 transitions. [2022-11-22 00:16:23,704 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1164 transitions. Word has length 128 [2022-11-22 00:16:23,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:16:23,706 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1164 transitions. [2022-11-22 00:16:23,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:23,706 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1164 transitions. [2022-11-22 00:16:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-22 00:16:23,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:16:23,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:16:23,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:16:23,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:16:23,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:16:23,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1353611203, now seen corresponding path program 1 times [2022-11-22 00:16:23,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:16:23,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742536411] [2022-11-22 00:16:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:23,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:16:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:16:23,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:16:23,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742536411] [2022-11-22 00:16:23,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742536411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:16:23,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:16:23,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:16:23,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726983726] [2022-11-22 00:16:23,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:16:23,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:16:23,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:16:23,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:16:23,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:23,907 INFO L87 Difference]: Start difference. First operand 963 states and 1164 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:16:24,255 INFO L93 Difference]: Finished difference Result 2725 states and 3305 transitions. [2022-11-22 00:16:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:16:24,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-11-22 00:16:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:16:24,263 INFO L225 Difference]: With dead ends: 2725 [2022-11-22 00:16:24,264 INFO L226 Difference]: Without dead ends: 1683 [2022-11-22 00:16:24,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:24,267 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 58 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:16:24,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 29 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:16:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2022-11-22 00:16:24,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1603. [2022-11-22 00:16:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 1.1853932584269662) internal successors, (1899), 1602 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 1899 transitions. [2022-11-22 00:16:24,304 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 1899 transitions. Word has length 132 [2022-11-22 00:16:24,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:16:24,306 INFO L495 AbstractCegarLoop]: Abstraction has 1603 states and 1899 transitions. [2022-11-22 00:16:24,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:24,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 1899 transitions. [2022-11-22 00:16:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-22 00:16:24,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:16:24,311 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:16:24,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:16:24,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:16:24,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:16:24,312 INFO L85 PathProgramCache]: Analyzing trace with hash -921900847, now seen corresponding path program 1 times [2022-11-22 00:16:24,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:16:24,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611526738] [2022-11-22 00:16:24,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:24,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:16:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-22 00:16:24,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:16:24,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611526738] [2022-11-22 00:16:24,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611526738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:16:24,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:16:24,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:16:24,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393157692] [2022-11-22 00:16:24,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:16:24,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:16:24,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:16:24,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:16:24,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:24,496 INFO L87 Difference]: Start difference. First operand 1603 states and 1899 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:24,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:16:24,706 INFO L93 Difference]: Finished difference Result 2805 states and 3346 transitions. [2022-11-22 00:16:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:16:24,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2022-11-22 00:16:24,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:16:24,711 INFO L225 Difference]: With dead ends: 2805 [2022-11-22 00:16:24,711 INFO L226 Difference]: Without dead ends: 1123 [2022-11-22 00:16:24,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:24,713 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:16:24,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 4 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:16:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-11-22 00:16:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2022-11-22 00:16:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.14349376114082) internal successors, (1283), 1122 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1283 transitions. [2022-11-22 00:16:24,741 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1283 transitions. Word has length 168 [2022-11-22 00:16:24,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:16:24,742 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1283 transitions. [2022-11-22 00:16:24,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1283 transitions. [2022-11-22 00:16:24,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-22 00:16:24,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:16:24,746 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:16:24,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:16:24,747 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:16:24,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:16:24,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1873642033, now seen corresponding path program 1 times [2022-11-22 00:16:24,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:16:24,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348656054] [2022-11-22 00:16:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:24,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:16:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 00:16:24,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:16:24,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348656054] [2022-11-22 00:16:24,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348656054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:16:24,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:16:24,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:16:24,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422853489] [2022-11-22 00:16:24,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:16:24,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:16:24,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:16:24,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:16:24,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:24,885 INFO L87 Difference]: Start difference. First operand 1123 states and 1283 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:25,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:16:25,143 INFO L93 Difference]: Finished difference Result 2085 states and 2371 transitions. [2022-11-22 00:16:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:16:25,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2022-11-22 00:16:25,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:16:25,147 INFO L225 Difference]: With dead ends: 2085 [2022-11-22 00:16:25,147 INFO L226 Difference]: Without dead ends: 1043 [2022-11-22 00:16:25,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:16:25,149 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 35 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:16:25,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 114 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:16:25,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-11-22 00:16:25,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2022-11-22 00:16:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.0998080614203456) internal successors, (1146), 1042 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1146 transitions. [2022-11-22 00:16:25,172 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1146 transitions. Word has length 170 [2022-11-22 00:16:25,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:16:25,172 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1146 transitions. [2022-11-22 00:16:25,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:25,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1146 transitions. [2022-11-22 00:16:25,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-22 00:16:25,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:16:25,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:16:25,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:16:25,176 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:16:25,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:16:25,177 INFO L85 PathProgramCache]: Analyzing trace with hash -464484726, now seen corresponding path program 1 times [2022-11-22 00:16:25,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:16:25,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923429864] [2022-11-22 00:16:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:25,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:16:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:16:25,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:16:25,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923429864] [2022-11-22 00:16:25,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923429864] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:16:25,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932091315] [2022-11-22 00:16:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:25,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:16:25,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:16:25,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:16:25,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:16:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:25,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:16:25,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:16:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-22 00:16:26,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:16:26,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932091315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:16:26,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:16:26,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-22 00:16:26,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906133907] [2022-11-22 00:16:26,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:16:26,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:16:26,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:16:26,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:16:26,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:16:26,005 INFO L87 Difference]: Start difference. First operand 1043 states and 1146 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:26,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:16:26,296 INFO L93 Difference]: Finished difference Result 2325 states and 2583 transitions. [2022-11-22 00:16:26,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:16:26,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2022-11-22 00:16:26,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:16:26,300 INFO L225 Difference]: With dead ends: 2325 [2022-11-22 00:16:26,301 INFO L226 Difference]: Without dead ends: 1123 [2022-11-22 00:16:26,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:16:26,305 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:16:26,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 95 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:16:26,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-11-22 00:16:26,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2022-11-22 00:16:26,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.085561497326203) internal successors, (1218), 1122 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:26,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1218 transitions. [2022-11-22 00:16:26,330 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1218 transitions. Word has length 178 [2022-11-22 00:16:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:16:26,331 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1218 transitions. [2022-11-22 00:16:26,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:26,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1218 transitions. [2022-11-22 00:16:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-22 00:16:26,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:16:26,336 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:16:26,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:16:26,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:16:26,543 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:16:26,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:16:26,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1572250889, now seen corresponding path program 1 times [2022-11-22 00:16:26,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:16:26,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902126984] [2022-11-22 00:16:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:26,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:16:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:16:26,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:16:26,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902126984] [2022-11-22 00:16:26,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902126984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:16:26,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:16:26,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:16:26,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501762720] [2022-11-22 00:16:26,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:16:26,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:16:26,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:16:26,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:16:26,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:16:26,969 INFO L87 Difference]: Start difference. First operand 1123 states and 1218 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:27,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:16:27,201 INFO L93 Difference]: Finished difference Result 2165 states and 2353 transitions. [2022-11-22 00:16:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:16:27,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2022-11-22 00:16:27,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:16:27,208 INFO L225 Difference]: With dead ends: 2165 [2022-11-22 00:16:27,208 INFO L226 Difference]: Without dead ends: 803 [2022-11-22 00:16:27,210 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:16:27,210 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 94 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:16:27,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 106 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:16:27,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-22 00:16:27,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2022-11-22 00:16:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 802 states have (on average 1.071072319201995) internal successors, (859), 802 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 859 transitions. [2022-11-22 00:16:27,231 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 859 transitions. Word has length 228 [2022-11-22 00:16:27,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:16:27,231 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 859 transitions. [2022-11-22 00:16:27,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:16:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 859 transitions. [2022-11-22 00:16:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-11-22 00:16:27,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:16:27,236 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:16:27,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:16:27,236 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:16:27,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:16:27,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1114508387, now seen corresponding path program 1 times [2022-11-22 00:16:27,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:16:27,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112363564] [2022-11-22 00:16:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:27,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:16:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 197 proven. 197 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-22 00:16:28,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:16:28,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112363564] [2022-11-22 00:16:28,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112363564] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:16:28,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715368082] [2022-11-22 00:16:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:16:28,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:16:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:16:28,267 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:16:28,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:16:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:16:28,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 00:16:28,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:16:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 311 proven. 114 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:16:30,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:16:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 242 proven. 183 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:16:31,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715368082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:16:31,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1133591950] [2022-11-22 00:16:31,614 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-11-22 00:16:31,615 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:16:31,619 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:16:31,625 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:16:31,625 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:18:26,360 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2022-11-22 00:18:26,707 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13960 conjuctions. This might take some time... [2022-11-22 00:18:27,367 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 560 conjuctions. [2022-11-22 00:18:27,377 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2022-11-22 00:18:27,645 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13960 conjuctions. This might take some time... [2022-11-22 00:18:28,342 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 560 conjuctions. [2022-11-22 00:18:28,479 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 31 [2022-11-22 00:18:28,644 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 13960 conjuctions. This might take some time... [2022-11-22 00:18:29,323 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 560 conjuctions. [2022-11-22 00:18:29,853 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:18:49,730 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27265#(and (<= 26 ~z~0) (<= 5 ~e~0) (<= 25 ~y~0) (<= ~c~0 3) (<= ~e~0 5) (<= 6 ~f~0) (<= 0 |#NULL.base|) (= ~a17~0 8) (<= ~w~0 23) (<= ~u~0 21) (<= 1 |ULTIMATE.start_calculate_output_~input#1|) (= ~a25~0 1) (<= ~x~0 24) (<= 3 ~c~0) (<= |#NULL.offset| 0) (<= ~v~0 22) (<= 1 |ULTIMATE.start_main_~input~0#1|) (= ~a11~0 1) (<= ~a~0 1) (<= 4 ~d~0) (not (= ~a19~0 1)) (<= 23 ~w~0) (<= ~z~0 26) (= ~a21~0 1) (<= 21 ~u~0) (<= 1 |ULTIMATE.start_calculate_output_#in~input#1|) (<= |#NULL.base| 0) (<= ~y~0 25) (<= 1 ~a~0) (<= 22 ~v~0) (= ~a28~0 8) (<= 0 |#NULL.offset|) (<= ~d~0 4) (<= 0 |#StackHeapBarrier|) (<= ~f~0 6) (<= 24 ~x~0))' at error location [2022-11-22 00:18:49,730 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:18:49,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:18:49,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-22 00:18:49,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023540326] [2022-11-22 00:18:49,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:18:49,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 00:18:49,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:18:49,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 00:18:49,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-11-22 00:18:49,733 INFO L87 Difference]: Start difference. First operand 803 states and 859 transitions. Second operand has 15 states, 15 states have (on average 36.0) internal successors, (540), 14 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:18:50,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:18:50,842 INFO L93 Difference]: Finished difference Result 1046 states and 1120 transitions. [2022-11-22 00:18:50,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:18:50,843 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 36.0) internal successors, (540), 14 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 278 [2022-11-22 00:18:50,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:18:50,843 INFO L225 Difference]: With dead ends: 1046 [2022-11-22 00:18:50,844 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 00:18:50,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 594 SyntacticMatches, 223 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3648 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2022-11-22 00:18:50,846 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 422 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:18:50,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 54 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 00:18:50,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 00:18:50,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 00:18:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:18:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 00:18:50,847 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 278 [2022-11-22 00:18:50,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:18:50,848 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 00:18:50,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 36.0) internal successors, (540), 14 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:18:50,848 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 00:18:50,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 00:18:50,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 00:18:50,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-22 00:18:51,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 00:18:51,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 00:18:51,748 INFO L899 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2022-11-22 00:18:51,749 INFO L899 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2022-11-22 00:18:51,749 INFO L899 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2022-11-22 00:18:51,749 INFO L899 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2022-11-22 00:18:51,749 INFO L899 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2022-11-22 00:18:51,749 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2022-11-22 00:18:51,749 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2022-11-22 00:18:51,750 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2022-11-22 00:18:51,750 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2022-11-22 00:18:51,750 INFO L899 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2022-11-22 00:18:51,750 INFO L899 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2022-11-22 00:18:51,750 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2022-11-22 00:18:51,750 INFO L899 garLoopResultBuilder]: For program point L508-1(lines 39 608) no Hoare annotation was computed. [2022-11-22 00:18:51,751 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2022-11-22 00:18:51,751 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2022-11-22 00:18:51,751 INFO L899 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2022-11-22 00:18:51,751 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2022-11-22 00:18:51,751 INFO L899 garLoopResultBuilder]: For program point L511-1(lines 39 608) no Hoare annotation was computed. [2022-11-22 00:18:51,751 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2022-11-22 00:18:51,752 INFO L899 garLoopResultBuilder]: For program point L512(line 512) no Hoare annotation was computed. [2022-11-22 00:18:51,752 INFO L899 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2022-11-22 00:18:51,752 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2022-11-22 00:18:51,752 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2022-11-22 00:18:51,752 INFO L899 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2022-11-22 00:18:51,752 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2022-11-22 00:18:51,752 INFO L899 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2022-11-22 00:18:51,753 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2022-11-22 00:18:51,753 INFO L899 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2022-11-22 00:18:51,753 INFO L899 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2022-11-22 00:18:51,753 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 00:18:51,753 INFO L899 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2022-11-22 00:18:51,753 INFO L899 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2022-11-22 00:18:51,754 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2022-11-22 00:18:51,754 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2022-11-22 00:18:51,754 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2022-11-22 00:18:51,754 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2022-11-22 00:18:51,754 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2022-11-22 00:18:51,754 INFO L899 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2022-11-22 00:18:51,754 INFO L899 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2022-11-22 00:18:51,755 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 512) no Hoare annotation was computed. [2022-11-22 00:18:51,755 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2022-11-22 00:18:51,755 INFO L899 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2022-11-22 00:18:51,755 INFO L899 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2022-11-22 00:18:51,755 INFO L899 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2022-11-22 00:18:51,756 INFO L899 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2022-11-22 00:18:51,756 INFO L899 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2022-11-22 00:18:51,756 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2022-11-22 00:18:51,756 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2022-11-22 00:18:51,756 INFO L899 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2022-11-22 00:18:51,756 INFO L899 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2022-11-22 00:18:51,756 INFO L899 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2022-11-22 00:18:51,757 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2022-11-22 00:18:51,757 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2022-11-22 00:18:51,757 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2022-11-22 00:18:51,757 INFO L899 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2022-11-22 00:18:51,757 INFO L899 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2022-11-22 00:18:51,758 INFO L895 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse4 (<= 9 ~a28~0)) (.cse3 (= ~a17~0 8)) (.cse5 (= ~a21~0 1)) (.cse9 (= ~a11~0 ~a19~0)) (.cse6 (= ~a11~0 0)) (.cse2 (= ~a19~0 1)) (.cse0 (<= 10 ~a28~0)) (.cse11 (= ~a25~0 1)) (.cse1 (<= ~a28~0 10)) (.cse7 (= ~a11~0 1)) (.cse8 (<= ~a17~0 8)) (.cse10 (<= ~a28~0 7))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse6 .cse1 .cse2) (and .cse7 .cse8 .cse1 .cse2) (and .cse3 .cse5 .cse9 .cse6 .cse10) (and .cse11 .cse8 .cse2) (and .cse4 .cse11 .cse7 .cse8 .cse1) (and .cse3 .cse5 .cse6 .cse2 .cse10) (and .cse0 .cse7 .cse8 .cse1) (and .cse3 (not (= |ULTIMATE.start_calculate_output_~input#1| 3)) .cse5 .cse9 .cse6 (= ~a28~0 8) (= ~a25~0 0)) (and .cse11 .cse6 .cse2 .cse10) (and .cse0 .cse11 .cse8 .cse1) (and .cse7 .cse8 .cse10))) [2022-11-22 00:18:51,758 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2022-11-22 00:18:51,758 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2022-11-22 00:18:51,758 INFO L902 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2022-11-22 00:18:51,759 INFO L899 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2022-11-22 00:18:51,759 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2022-11-22 00:18:51,759 INFO L899 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2022-11-22 00:18:51,759 INFO L899 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2022-11-22 00:18:51,759 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2022-11-22 00:18:51,759 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 00:18:51,760 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2022-11-22 00:18:51,760 INFO L899 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2022-11-22 00:18:51,760 INFO L895 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse4 (<= 9 ~a28~0)) (.cse3 (= ~a17~0 8)) (.cse5 (= ~a21~0 1)) (.cse9 (= ~a11~0 ~a19~0)) (.cse6 (= ~a11~0 0)) (.cse2 (= ~a19~0 1)) (.cse0 (<= 10 ~a28~0)) (.cse11 (= ~a25~0 1)) (.cse1 (<= ~a28~0 10)) (.cse7 (= ~a11~0 1)) (.cse8 (<= ~a17~0 8)) (.cse10 (<= ~a28~0 7))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 .cse5 .cse6 .cse1 .cse2) (and .cse7 .cse8 .cse1 .cse2) (and .cse3 .cse5 .cse9 .cse6 .cse10) (and .cse11 .cse8 .cse2) (and .cse4 .cse11 .cse7 .cse8 .cse1) (and .cse3 .cse5 .cse6 .cse2 .cse10) (and .cse0 .cse7 .cse8 .cse1) (and .cse3 (not (= |ULTIMATE.start_calculate_output_~input#1| 3)) .cse5 .cse9 .cse6 (= ~a28~0 8) (= ~a25~0 0)) (and .cse11 .cse6 .cse2 .cse10) (and .cse0 .cse11 .cse8 .cse1) (and .cse7 .cse8 .cse10))) [2022-11-22 00:18:51,760 INFO L899 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2022-11-22 00:18:51,760 INFO L899 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2022-11-22 00:18:51,761 INFO L899 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2022-11-22 00:18:51,761 INFO L899 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2022-11-22 00:18:51,761 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2022-11-22 00:18:51,761 INFO L899 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2022-11-22 00:18:51,761 INFO L899 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2022-11-22 00:18:51,761 INFO L899 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2022-11-22 00:18:51,762 INFO L899 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2022-11-22 00:18:51,762 INFO L899 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2022-11-22 00:18:51,762 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2022-11-22 00:18:51,762 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2022-11-22 00:18:51,762 INFO L899 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2022-11-22 00:18:51,762 INFO L899 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2022-11-22 00:18:51,763 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2022-11-22 00:18:51,763 INFO L899 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2022-11-22 00:18:51,766 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:18:51,768 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 00:18:51,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:18:51 BoogieIcfgContainer [2022-11-22 00:18:51,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 00:18:51,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 00:18:51,788 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 00:18:51,788 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 00:18:51,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:16:19" (3/4) ... [2022-11-22 00:18:51,791 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 00:18:51,809 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 116 nodes and edges [2022-11-22 00:18:51,810 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-22 00:18:51,812 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-22 00:18:51,813 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 00:18:51,900 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 00:18:51,900 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 00:18:51,901 INFO L158 Benchmark]: Toolchain (without parser) took 154480.65ms. Allocated memory was 142.6MB in the beginning and 841.0MB in the end (delta: 698.4MB). Free memory was 107.2MB in the beginning and 560.7MB in the end (delta: -453.5MB). Peak memory consumption was 245.9MB. Max. memory is 16.1GB. [2022-11-22 00:18:51,901 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 88.8MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 00:18:51,902 INFO L158 Benchmark]: CACSL2BoogieTranslator took 630.35ms. Allocated memory is still 142.6MB. Free memory was 106.6MB in the beginning and 97.3MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 00:18:51,902 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.23ms. Allocated memory is still 142.6MB. Free memory was 97.3MB in the beginning and 92.4MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 00:18:51,902 INFO L158 Benchmark]: Boogie Preprocessor took 66.92ms. Allocated memory is still 142.6MB. Free memory was 91.7MB in the beginning and 87.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 00:18:51,903 INFO L158 Benchmark]: RCFGBuilder took 1682.29ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 87.5MB in the beginning and 114.9MB in the end (delta: -27.5MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2022-11-22 00:18:51,903 INFO L158 Benchmark]: TraceAbstraction took 151889.17ms. Allocated memory was 172.0MB in the beginning and 841.0MB in the end (delta: 669.0MB). Free memory was 113.9MB in the beginning and 571.2MB in the end (delta: -457.3MB). Peak memory consumption was 212.7MB. Max. memory is 16.1GB. [2022-11-22 00:18:51,903 INFO L158 Benchmark]: Witness Printer took 113.13ms. Allocated memory is still 841.0MB. Free memory was 571.2MB in the beginning and 560.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 00:18:51,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 88.8MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 630.35ms. Allocated memory is still 142.6MB. Free memory was 106.6MB in the beginning and 97.3MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.23ms. Allocated memory is still 142.6MB. Free memory was 97.3MB in the beginning and 92.4MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.92ms. Allocated memory is still 142.6MB. Free memory was 91.7MB in the beginning and 87.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1682.29ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 87.5MB in the beginning and 114.9MB in the end (delta: -27.5MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * TraceAbstraction took 151889.17ms. Allocated memory was 172.0MB in the beginning and 841.0MB in the end (delta: 669.0MB). Free memory was 113.9MB in the beginning and 571.2MB in the end (delta: -457.3MB). Peak memory consumption was 212.7MB. Max. memory is 16.1GB. * Witness Printer took 113.13ms. Allocated memory is still 841.0MB. Free memory was 571.2MB in the beginning and 560.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 512]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 151.8s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 959 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 959 mSDsluCounter, 794 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96 mSDsCounter, 512 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3480 IncrementalHoareTripleChecker+Invalid, 3992 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 512 mSolverCounterUnsat, 698 mSDtfsCounter, 3480 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1050 GetRequests, 785 SyntacticMatches, 223 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3651 ImplicationChecksByTransitivity, 20.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1603occurred in iteration=6, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 160 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 347 HoareAnnotationTreeSize, 3 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 436 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 2122 NumberOfCodeBlocks, 2122 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2386 ConstructedInterpolants, 0 QuantifiedInterpolants, 11524 SizeOfPredicates, 11 NumberOfNonLiveVariables, 841 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 1870/2422 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((((10 <= a28 && a28 <= 10) && a19 == 1) || (((((a17 == 8 && 9 <= a28) && a21 == 1) && a11 == 0) && a28 <= 10) && a19 == 1)) || (((a11 == 1 && a17 <= 8) && a28 <= 10) && a19 == 1)) || ((((a17 == 8 && a21 == 1) && a11 == a19) && a11 == 0) && a28 <= 7)) || ((a25 == 1 && a17 <= 8) && a19 == 1)) || ((((9 <= a28 && a25 == 1) && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((a17 == 8 && a21 == 1) && a11 == 0) && a19 == 1) && a28 <= 7)) || (((10 <= a28 && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((((a17 == 8 && !(input == 3)) && a21 == 1) && a11 == a19) && a11 == 0) && a28 == 8) && a25 == 0)) || (((a25 == 1 && a11 == 0) && a19 == 1) && a28 <= 7)) || (((10 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10)) || ((a11 == 1 && a17 <= 8) && a28 <= 7) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((10 <= a28 && a28 <= 10) && a19 == 1) || (((((a17 == 8 && 9 <= a28) && a21 == 1) && a11 == 0) && a28 <= 10) && a19 == 1)) || (((a11 == 1 && a17 <= 8) && a28 <= 10) && a19 == 1)) || ((((a17 == 8 && a21 == 1) && a11 == a19) && a11 == 0) && a28 <= 7)) || ((a25 == 1 && a17 <= 8) && a19 == 1)) || ((((9 <= a28 && a25 == 1) && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((a17 == 8 && a21 == 1) && a11 == 0) && a19 == 1) && a28 <= 7)) || (((10 <= a28 && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((((a17 == 8 && !(input == 3)) && a21 == 1) && a11 == a19) && a11 == 0) && a28 == 8) && a25 == 0)) || (((a25 == 1 && a11 == 0) && a19 == 1) && a28 <= 7)) || (((10 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10)) || ((a11 == 1 && a17 <= 8) && a28 <= 7) RESULT: Ultimate proved your program to be correct! [2022-11-22 00:18:51,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45214c39-b560-447e-a6a7-1dc6c46795f6/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE