./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label43.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label43.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0 --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 409e906c97fdb83aebfefc37fd10289c280112661b5f3b33ba432f9c10381db1 --- 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-e04fb08 [2022-11-16 19:44:40,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:44:40,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:44:40,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:44:40,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:44:40,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:44:40,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:44:40,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:44:40,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:44:40,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:44:40,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:44:40,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:44:40,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:44:40,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:44:40,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:44:40,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:44:40,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:44:40,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:44:40,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:44:40,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:44:40,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:44:40,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:44:40,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:44:40,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:44:40,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:44:40,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:44:40,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:44:40,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:44:40,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:44:40,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:44:40,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:44:40,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:44:40,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:44:40,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:44:40,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:44:40,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:44:40,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:44:40,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:44:40,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:44:40,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:44:40,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:44:40,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:44:40,274 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:44:40,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:44:40,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:44:40,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:44:40,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:44:40,276 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:44:40,276 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:44:40,277 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:44:40,277 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:44:40,277 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:44:40,277 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:44:40,278 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:44:40,278 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:44:40,278 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:44:40,278 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:44:40,278 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:44:40,279 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:44:40,279 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:44:40,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:44:40,280 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:44:40,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:44:40,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:44:40,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:44:40,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:44:40,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:44:40,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:44:40,281 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:44:40,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:44:40,282 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:44:40,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:44:40,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:44:40,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:44:40,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:44:40,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:44:40,285 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:44:40,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:44:40,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:44:40,286 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:44:40,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:44:40,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:44:40,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:44:40,287 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_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 409e906c97fdb83aebfefc37fd10289c280112661b5f3b33ba432f9c10381db1 [2022-11-16 19:44:40,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:44:40,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:44:40,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:44:40,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:44:40,628 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:44:40,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/eca-rers2012/Problem01_label43.c [2022-11-16 19:44:40,715 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/data/cad452334/6d3c827633844c01a95ee227e38ce102/FLAG099d93a00 [2022-11-16 19:44:41,347 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:44:41,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/sv-benchmarks/c/eca-rers2012/Problem01_label43.c [2022-11-16 19:44:41,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/data/cad452334/6d3c827633844c01a95ee227e38ce102/FLAG099d93a00 [2022-11-16 19:44:41,629 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/data/cad452334/6d3c827633844c01a95ee227e38ce102 [2022-11-16 19:44:41,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:44:41,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:44:41,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:44:41,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:44:41,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:44:41,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:44:41" (1/1) ... [2022-11-16 19:44:41,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6514ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:41, skipping insertion in model container [2022-11-16 19:44:41,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:44:41" (1/1) ... [2022-11-16 19:44:41,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:44:41,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:44:42,145 WARN L229 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_8df942cc-c1f6-47d7-a818-83e3e87a00ff/sv-benchmarks/c/eca-rers2012/Problem01_label43.c[21463,21476] [2022-11-16 19:44:42,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:44:42,175 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:44:42,302 WARN L229 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_8df942cc-c1f6-47d7-a818-83e3e87a00ff/sv-benchmarks/c/eca-rers2012/Problem01_label43.c[21463,21476] [2022-11-16 19:44:42,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:44:42,327 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:44:42,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42 WrapperNode [2022-11-16 19:44:42,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:44:42,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:44:42,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:44:42,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:44:42,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42" (1/1) ... [2022-11-16 19:44:42,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42" (1/1) ... [2022-11-16 19:44:42,438 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-11-16 19:44:42,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:44:42,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:44:42,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:44:42,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:44:42,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42" (1/1) ... [2022-11-16 19:44:42,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42" (1/1) ... [2022-11-16 19:44:42,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42" (1/1) ... [2022-11-16 19:44:42,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42" (1/1) ... [2022-11-16 19:44:42,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42" (1/1) ... [2022-11-16 19:44:42,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42" (1/1) ... [2022-11-16 19:44:42,519 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42" (1/1) ... [2022-11-16 19:44:42,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42" (1/1) ... [2022-11-16 19:44:42,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:44:42,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:44:42,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:44:42,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:44:42,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42" (1/1) ... [2022-11-16 19:44:42,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:44:42,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:44:42,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:44:42,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:44:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:44:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:44:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:44:42,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:44:42,816 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:44:42,819 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:44:44,230 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:44:44,543 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:44:44,544 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 19:44:44,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:44:44 BoogieIcfgContainer [2022-11-16 19:44:44,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:44:44,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:44:44,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:44:44,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:44:44,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:44:41" (1/3) ... [2022-11-16 19:44:44,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4199f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:44:44, skipping insertion in model container [2022-11-16 19:44:44,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:44:42" (2/3) ... [2022-11-16 19:44:44,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4199f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:44:44, skipping insertion in model container [2022-11-16 19:44:44,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:44:44" (3/3) ... [2022-11-16 19:44:44,561 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label43.c [2022-11-16 19:44:44,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:44:44,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 19:44:44,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:44:44,665 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;@9b06c04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:44:44,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 19:44:44,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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) [2022-11-16 19:44:44,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 19:44:44,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:44:44,690 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] [2022-11-16 19:44:44,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:44:44,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:44:44,697 INFO L85 PathProgramCache]: Analyzing trace with hash 379029127, now seen corresponding path program 1 times [2022-11-16 19:44:44,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:44:44,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186668903] [2022-11-16 19:44:44,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:44:44,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:44:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:44:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:44:45,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:44:45,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186668903] [2022-11-16 19:44:45,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186668903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:44:45,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:44:45,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:44:45,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869440456] [2022-11-16 19:44:45,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:44:45,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:44:45,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:44:45,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:44:45,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:44:45,359 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2022-11-16 19:44:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:44:45,880 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-11-16 19:44:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:44:45,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2022-11-16 19:44:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:44:45,896 INFO L225 Difference]: With dead ends: 224 [2022-11-16 19:44:45,896 INFO L226 Difference]: Without dead ends: 145 [2022-11-16 19:44:45,900 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 [2022-11-16 19:44:45,904 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:44:45,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 36 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 19:44:45,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-16 19:44:45,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-16 19:44:45,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 144 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) [2022-11-16 19:44:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2022-11-16 19:44:45,985 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2022-11-16 19:44:45,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:44:45,986 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2022-11-16 19:44:45,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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) [2022-11-16 19:44:45,986 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2022-11-16 19:44:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 19:44:45,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:44:45,990 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 19:44:45,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:44:45,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:44:45,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:44:45,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1189479233, now seen corresponding path program 1 times [2022-11-16 19:44:45,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:44:45,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908162175] [2022-11-16 19:44:45,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:44:45,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:44:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:44:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 19:44:46,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:44:46,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908162175] [2022-11-16 19:44:46,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908162175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:44:46,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:44:46,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:44:46,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490246666] [2022-11-16 19:44:46,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:44:46,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:44:46,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:44:46,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:44:46,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:44:46,443 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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) [2022-11-16 19:44:46,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:44:46,992 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2022-11-16 19:44:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:44:46,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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 75 [2022-11-16 19:44:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:44:47,000 INFO L225 Difference]: With dead ends: 431 [2022-11-16 19:44:47,000 INFO L226 Difference]: Without dead ends: 287 [2022-11-16 19:44:47,002 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 [2022-11-16 19:44:47,003 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:44:47,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 19:44:47,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-16 19:44:47,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-16 19:44:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 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) [2022-11-16 19:44:47,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2022-11-16 19:44:47,060 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2022-11-16 19:44:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:44:47,064 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2022-11-16 19:44:47,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 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) [2022-11-16 19:44:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2022-11-16 19:44:47,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 19:44:47,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:44:47,073 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:44:47,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:44:47,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:44:47,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:44:47,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1933821963, now seen corresponding path program 1 times [2022-11-16 19:44:47,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:44:47,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232845121] [2022-11-16 19:44:47,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:44:47,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:44:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:44:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 19:44:47,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:44:47,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232845121] [2022-11-16 19:44:47,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232845121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:44:47,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:44:47,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:44:47,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162755822] [2022-11-16 19:44:47,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:44:47,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:44:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:44:47,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:44:47,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:44:47,288 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2022-11-16 19:44:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:44:47,703 INFO L93 Difference]: Finished difference Result 715 states and 1184 transitions. [2022-11-16 19:44:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:44:47,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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 105 [2022-11-16 19:44:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:44:47,706 INFO L225 Difference]: With dead ends: 715 [2022-11-16 19:44:47,706 INFO L226 Difference]: Without dead ends: 429 [2022-11-16 19:44:47,708 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 [2022-11-16 19:44:47,709 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 87 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:44:47,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 26 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:44:47,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-16 19:44:47,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2022-11-16 19:44:47,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6442577030812324) internal successors, (587), 357 states have internal predecessors, (587), 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) [2022-11-16 19:44:47,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 587 transitions. [2022-11-16 19:44:47,731 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 587 transitions. Word has length 105 [2022-11-16 19:44:47,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:44:47,732 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 587 transitions. [2022-11-16 19:44:47,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 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) [2022-11-16 19:44:47,732 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 587 transitions. [2022-11-16 19:44:47,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-16 19:44:47,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:44:47,736 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:44:47,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:44:47,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:44:47,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:44:47,738 INFO L85 PathProgramCache]: Analyzing trace with hash 218749631, now seen corresponding path program 1 times [2022-11-16 19:44:47,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:44:47,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65760949] [2022-11-16 19:44:47,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:44:47,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:44:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:44:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 19:44:48,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:44:48,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65760949] [2022-11-16 19:44:48,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65760949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:44:48,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:44:48,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:44:48,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173103288] [2022-11-16 19:44:48,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:44:48,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:44:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:44:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:44:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:44:48,021 INFO L87 Difference]: Start difference. First operand 358 states and 587 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2022-11-16 19:44:48,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:44:48,358 INFO L93 Difference]: Finished difference Result 715 states and 1173 transitions. [2022-11-16 19:44:48,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:44:48,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 109 [2022-11-16 19:44:48,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:44:48,365 INFO L225 Difference]: With dead ends: 715 [2022-11-16 19:44:48,365 INFO L226 Difference]: Without dead ends: 358 [2022-11-16 19:44:48,366 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 [2022-11-16 19:44:48,377 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:44:48,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 58 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:44:48,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-16 19:44:48,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2022-11-16 19:44:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 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) [2022-11-16 19:44:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2022-11-16 19:44:48,405 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 109 [2022-11-16 19:44:48,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:44:48,406 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2022-11-16 19:44:48,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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) [2022-11-16 19:44:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2022-11-16 19:44:48,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-16 19:44:48,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:44:48,414 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:44:48,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 19:44:48,415 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:44:48,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:44:48,415 INFO L85 PathProgramCache]: Analyzing trace with hash 674883319, now seen corresponding path program 1 times [2022-11-16 19:44:48,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:44:48,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931044234] [2022-11-16 19:44:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:44:48,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:44:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:44:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 19:44:48,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:44:48,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931044234] [2022-11-16 19:44:48,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931044234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:44:48,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:44:48,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:44:48,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134358707] [2022-11-16 19:44:48,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:44:48,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:44:48,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:44:48,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:44:48,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:44:48,652 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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) [2022-11-16 19:44:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:44:49,016 INFO L93 Difference]: Finished difference Result 857 states and 1369 transitions. [2022-11-16 19:44:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:44:49,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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 113 [2022-11-16 19:44:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:44:49,019 INFO L225 Difference]: With dead ends: 857 [2022-11-16 19:44:49,019 INFO L226 Difference]: Without dead ends: 500 [2022-11-16 19:44:49,020 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 [2022-11-16 19:44:49,021 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 75 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:44:49,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 50 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:44:49,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-16 19:44:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-11-16 19:44:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.5210420841683367) internal successors, (759), 499 states have internal predecessors, (759), 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) [2022-11-16 19:44:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 759 transitions. [2022-11-16 19:44:49,035 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 759 transitions. Word has length 113 [2022-11-16 19:44:49,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:44:49,035 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 759 transitions. [2022-11-16 19:44:49,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 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) [2022-11-16 19:44:49,036 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 759 transitions. [2022-11-16 19:44:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-16 19:44:49,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:44:49,038 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:44:49,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 19:44:49,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:44:49,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:44:49,039 INFO L85 PathProgramCache]: Analyzing trace with hash -692377931, now seen corresponding path program 1 times [2022-11-16 19:44:49,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:44:49,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862904652] [2022-11-16 19:44:49,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:44:49,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:44:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:44:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-16 19:44:49,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:44:49,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862904652] [2022-11-16 19:44:49,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862904652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:44:49,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:44:49,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:44:49,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978798369] [2022-11-16 19:44:49,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:44:49,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:44:49,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:44:49,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:44:49,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:44:49,239 INFO L87 Difference]: Start difference. First operand 500 states and 759 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-11-16 19:44:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:44:49,685 INFO L93 Difference]: Finished difference Result 1352 states and 2015 transitions. [2022-11-16 19:44:49,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:44:49,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 122 [2022-11-16 19:44:49,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:44:49,686 INFO L225 Difference]: With dead ends: 1352 [2022-11-16 19:44:49,686 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 19:44:49,687 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 [2022-11-16 19:44:49,688 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 74 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:44:49,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 18 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:44:49,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 19:44:49,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 19:44:49,689 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) [2022-11-16 19:44:49,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 19:44:49,690 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2022-11-16 19:44:49,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:44:49,690 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 19:44:49,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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) [2022-11-16 19:44:49,690 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 19:44:49,690 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 19:44:49,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 19:44:49,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 19:44:49,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 19:44:49,777 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-11-16 19:44:49,777 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-11-16 19:44:49,778 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-11-16 19:44:49,778 INFO L899 garLoopResultBuilder]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2022-11-16 19:44:49,778 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-11-16 19:44:49,778 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-11-16 19:44:49,778 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-11-16 19:44:49,778 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-11-16 19:44:49,778 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-11-16 19:44:49,779 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-11-16 19:44:49,779 INFO L899 garLoopResultBuilder]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2022-11-16 19:44:49,779 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-11-16 19:44:49,779 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-11-16 19:44:49,779 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-11-16 19:44:49,779 INFO L899 garLoopResultBuilder]: For program point L570(line 570) no Hoare annotation was computed. [2022-11-16 19:44:49,780 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-11-16 19:44:49,780 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-11-16 19:44:49,780 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-11-16 19:44:49,781 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-11-16 19:44:49,781 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-11-16 19:44:49,782 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-11-16 19:44:49,782 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-11-16 19:44:49,782 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-11-16 19:44:49,782 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-11-16 19:44:49,782 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-11-16 19:44:49,782 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-11-16 19:44:49,782 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-11-16 19:44:49,783 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-11-16 19:44:49,783 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-11-16 19:44:49,783 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-11-16 19:44:49,783 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-11-16 19:44:49,783 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-11-16 19:44:49,783 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-11-16 19:44:49,783 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-11-16 19:44:49,784 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-11-16 19:44:49,784 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-11-16 19:44:49,784 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-11-16 19:44:49,784 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-11-16 19:44:49,784 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-11-16 19:44:49,784 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 19:44:49,784 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-11-16 19:44:49,784 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-11-16 19:44:49,785 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-11-16 19:44:49,785 INFO L895 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (or (and (= ~a21~0 1) (<= 15 ~a8~0)) (<= ~a16~0 5) (= ~a20~0 1)) [2022-11-16 19:44:49,785 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-11-16 19:44:49,785 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-11-16 19:44:49,786 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-11-16 19:44:49,786 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-11-16 19:44:49,786 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-11-16 19:44:49,786 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-11-16 19:44:49,786 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-11-16 19:44:49,786 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 19:44:49,786 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-11-16 19:44:49,787 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-11-16 19:44:49,787 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-11-16 19:44:49,787 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-11-16 19:44:49,787 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-11-16 19:44:49,787 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-11-16 19:44:49,787 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-11-16 19:44:49,787 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-11-16 19:44:49,788 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-11-16 19:44:49,788 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-11-16 19:44:49,788 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-11-16 19:44:49,788 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-11-16 19:44:49,788 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-11-16 19:44:49,788 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-11-16 19:44:49,788 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-11-16 19:44:49,789 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (or (and (= ~a21~0 1) (<= 15 ~a8~0)) (<= ~a16~0 5) (= ~a20~0 1)) [2022-11-16 19:44:49,789 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-11-16 19:44:49,789 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 570) no Hoare annotation was computed. [2022-11-16 19:44:49,790 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-11-16 19:44:49,791 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-11-16 19:44:49,792 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-11-16 19:44:49,792 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-11-16 19:44:49,792 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-11-16 19:44:49,792 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-11-16 19:44:49,797 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-16 19:44:49,806 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 19:44:49,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:44:49 BoogieIcfgContainer [2022-11-16 19:44:49,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 19:44:49,835 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 19:44:49,835 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 19:44:49,835 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 19:44:49,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:44:44" (3/4) ... [2022-11-16 19:44:49,839 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 19:44:49,875 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2022-11-16 19:44:49,877 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-16 19:44:49,878 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-16 19:44:49,879 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 19:44:50,023 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 19:44:50,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 19:44:50,024 INFO L158 Benchmark]: Toolchain (without parser) took 8387.14ms. Allocated memory was 92.3MB in the beginning and 203.4MB in the end (delta: 111.1MB). Free memory was 54.0MB in the beginning and 106.6MB in the end (delta: -52.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-16 19:44:50,025 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:44:50,025 INFO L158 Benchmark]: CACSL2BoogieTranslator took 687.73ms. Allocated memory is still 92.3MB. Free memory was 53.8MB in the beginning and 53.1MB in the end (delta: 643.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 19:44:50,025 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.03ms. Allocated memory is still 92.3MB. Free memory was 52.9MB in the beginning and 47.2MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 19:44:50,026 INFO L158 Benchmark]: Boogie Preprocessor took 107.06ms. Allocated memory is still 92.3MB. Free memory was 47.2MB in the beginning and 42.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 19:44:50,026 INFO L158 Benchmark]: RCFGBuilder took 1994.25ms. Allocated memory was 92.3MB in the beginning and 123.7MB in the end (delta: 31.5MB). Free memory was 42.7MB in the beginning and 76.1MB in the end (delta: -33.4MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2022-11-16 19:44:50,027 INFO L158 Benchmark]: TraceAbstraction took 5282.10ms. Allocated memory was 123.7MB in the beginning and 203.4MB in the end (delta: 79.7MB). Free memory was 75.2MB in the beginning and 117.1MB in the end (delta: -41.8MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2022-11-16 19:44:50,027 INFO L158 Benchmark]: Witness Printer took 188.54ms. Allocated memory is still 203.4MB. Free memory was 117.1MB in the beginning and 106.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 19:44:50,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 687.73ms. Allocated memory is still 92.3MB. Free memory was 53.8MB in the beginning and 53.1MB in the end (delta: 643.8kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.03ms. Allocated memory is still 92.3MB. Free memory was 52.9MB in the beginning and 47.2MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.06ms. Allocated memory is still 92.3MB. Free memory was 47.2MB in the beginning and 42.7MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1994.25ms. Allocated memory was 92.3MB in the beginning and 123.7MB in the end (delta: 31.5MB). Free memory was 42.7MB in the beginning and 76.1MB in the end (delta: -33.4MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5282.10ms. Allocated memory was 123.7MB in the beginning and 203.4MB in the end (delta: 79.7MB). Free memory was 75.2MB in the beginning and 117.1MB in the end (delta: -41.8MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. * Witness Printer took 188.54ms. Allocated memory is still 203.4MB. Free memory was 117.1MB in the beginning and 106.6MB 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: 570]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 348 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 348 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 395 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1221 IncrementalHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 395 mSolverCounterUnsat, 193 mSDtfsCounter, 1221 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=500occurred in iteration=5, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 71 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 29 NumberOfFragments, 29 HoareAnnotationTreeSize, 3 FomulaSimplifications, 298 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 595 NumberOfCodeBlocks, 595 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 589 ConstructedInterpolants, 0 QuantifiedInterpolants, 1101 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 235/235 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: 593]: Loop Invariant Derived loop invariant: ((a21 == 1 && 15 <= a8) || a16 <= 5) || a20 == 1 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((a21 == 1 && 15 <= a8) || a16 <= 5) || a20 == 1 RESULT: Ultimate proved your program to be correct! [2022-11-16 19:44:50,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df942cc-c1f6-47d7-a818-83e3e87a00ff/bin/utaipan-Xvt2sAort0/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