./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur --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 de5a591efb40e891e226106d8590a7409596f3a27aca8b697af826abd4fe5201 --- 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-38b53e6 [2022-11-26 01:08:08,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:08:08,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:08:08,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:08:08,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:08:08,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:08:08,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:08:08,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:08:08,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:08:08,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:08:08,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:08:08,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:08:08,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:08:08,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:08:08,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:08:08,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:08:08,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:08:08,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:08:08,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:08:08,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:08:08,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:08:08,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:08:08,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:08:08,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:08:08,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:08:08,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:08:08,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:08:08,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:08:08,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:08:08,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:08:08,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:08:08,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:08:08,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:08:08,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:08:08,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:08:08,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:08:08,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:08:08,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:08:08,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:08:08,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:08:08,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:08:08,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 01:08:08,584 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:08:08,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:08:08,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:08:08,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:08:08,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:08:08,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:08:08,586 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:08:08,586 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:08:08,587 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:08:08,587 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:08:08,588 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:08:08,588 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:08:08,588 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:08:08,588 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:08:08,589 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:08:08,589 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:08:08,589 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:08:08,589 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:08:08,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:08:08,590 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:08:08,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:08:08,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:08:08,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:08:08,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:08:08,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:08:08,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:08:08,592 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:08:08,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:08:08,592 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:08:08,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:08:08,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:08:08,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:08:08,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:08:08,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:08:08,594 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:08:08,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:08:08,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:08:08,594 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:08:08,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:08:08,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:08:08,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:08:08,595 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_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5a591efb40e891e226106d8590a7409596f3a27aca8b697af826abd4fe5201 [2022-11-26 01:08:08,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:08:08,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:08:08,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:08:08,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:08:08,965 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:08:08,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2022-11-26 01:08:12,234 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:08:12,555 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:08:12,559 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2022-11-26 01:08:12,574 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/data/fe1772eb6/3e7ab09f2f58418eb34137c958a04fa7/FLAG5dfadbb60 [2022-11-26 01:08:12,595 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/data/fe1772eb6/3e7ab09f2f58418eb34137c958a04fa7 [2022-11-26 01:08:12,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:08:12,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:08:12,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:08:12,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:08:12,611 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:08:12,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:08:12" (1/1) ... [2022-11-26 01:08:12,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67640607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:12, skipping insertion in model container [2022-11-26 01:08:12,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:08:12" (1/1) ... [2022-11-26 01:08:12,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:08:12,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:08:12,969 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_be0d4ec3-0be0-473f-a631-19d071418bc9/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2022-11-26 01:08:12,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:08:13,005 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:08:13,138 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_be0d4ec3-0be0-473f-a631-19d071418bc9/sv-benchmarks/c/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2022-11-26 01:08:13,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:08:13,165 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:08:13,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13 WrapperNode [2022-11-26 01:08:13,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:08:13,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:08:13,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:08:13,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:08:13,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13" (1/1) ... [2022-11-26 01:08:13,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13" (1/1) ... [2022-11-26 01:08:13,254 INFO L138 Inliner]: procedures = 17, calls = 293, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 772 [2022-11-26 01:08:13,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:08:13,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:08:13,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:08:13,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:08:13,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13" (1/1) ... [2022-11-26 01:08:13,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13" (1/1) ... [2022-11-26 01:08:13,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13" (1/1) ... [2022-11-26 01:08:13,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13" (1/1) ... [2022-11-26 01:08:13,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13" (1/1) ... [2022-11-26 01:08:13,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13" (1/1) ... [2022-11-26 01:08:13,312 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13" (1/1) ... [2022-11-26 01:08:13,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13" (1/1) ... [2022-11-26 01:08:13,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:08:13,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:08:13,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:08:13,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:08:13,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13" (1/1) ... [2022-11-26 01:08:13,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:08:13,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:08:13,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:08:13,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:08:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 01:08:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2022-11-26 01:08:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:08:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:08:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:08:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:08:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:08:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 01:08:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:08:13,707 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:08:13,709 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:08:14,752 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:08:14,768 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:08:14,768 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 01:08:14,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:08:14 BoogieIcfgContainer [2022-11-26 01:08:14,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:08:14,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:08:14,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:08:14,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:08:14,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:08:12" (1/3) ... [2022-11-26 01:08:14,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b51c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:08:14, skipping insertion in model container [2022-11-26 01:08:14,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:08:13" (2/3) ... [2022-11-26 01:08:14,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b51c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:08:14, skipping insertion in model container [2022-11-26 01:08:14,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:08:14" (3/3) ... [2022-11-26 01:08:14,780 INFO L112 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2022-11-26 01:08:14,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:08:14,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 01:08:14,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:08:14,863 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;@668b93cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:08:14,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 01:08:14,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 46 states have (on average 1.934782608695652) internal successors, (89), 47 states have internal predecessors, (89), 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) [2022-11-26 01:08:14,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-26 01:08:14,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:14,878 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] [2022-11-26 01:08:14,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:08:14,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:14,885 INFO L85 PathProgramCache]: Analyzing trace with hash -352673803, now seen corresponding path program 1 times [2022-11-26 01:08:14,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:14,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483214509] [2022-11-26 01:08:14,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:14,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:08:17,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:17,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483214509] [2022-11-26 01:08:17,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483214509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:17,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:17,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-26 01:08:17,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630673182] [2022-11-26 01:08:17,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:17,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-26 01:08:17,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-26 01:08:17,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-26 01:08:17,148 INFO L87 Difference]: Start difference. First operand has 48 states, 46 states have (on average 1.934782608695652) internal successors, (89), 47 states have internal predecessors, (89), 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 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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) [2022-11-26 01:08:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:08:18,008 INFO L93 Difference]: Finished difference Result 81 states and 115 transitions. [2022-11-26 01:08:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 01:08:18,011 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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 43 [2022-11-26 01:08:18,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:08:18,020 INFO L225 Difference]: With dead ends: 81 [2022-11-26 01:08:18,020 INFO L226 Difference]: Without dead ends: 52 [2022-11-26 01:08:18,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-11-26 01:08:18,027 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 84 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 01:08:18,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 399 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 01:08:18,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-26 01:08:18,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2022-11-26 01:08:18,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 48 states have internal predecessors, (49), 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) [2022-11-26 01:08:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2022-11-26 01:08:18,094 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 43 [2022-11-26 01:08:18,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:08:18,095 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2022-11-26 01:08:18,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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) [2022-11-26 01:08:18,096 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2022-11-26 01:08:18,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-26 01:08:18,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:18,099 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] [2022-11-26 01:08:18,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:08:18,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:08:18,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:18,101 INFO L85 PathProgramCache]: Analyzing trace with hash -530558132, now seen corresponding path program 1 times [2022-11-26 01:08:18,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:18,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577975932] [2022-11-26 01:08:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:18,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:08:19,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:19,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577975932] [2022-11-26 01:08:19,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577975932] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:08:19,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915742199] [2022-11-26 01:08:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:19,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:08:19,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:08:19,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:08:19,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 01:08:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:19,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-26 01:08:19,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:08:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:08:19,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:08:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:08:20,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915742199] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:08:20,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [930868203] [2022-11-26 01:08:20,508 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-26 01:08:20,508 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:08:20,515 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:08:20,521 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:08:20,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:08:20,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:08:21,078 INFO L321 Elim1Store]: treesize reduction 252, result has 33.5 percent of original size [2022-11-26 01:08:21,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 122 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 193 [2022-11-26 01:08:21,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:08:21,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 121 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 126 [2022-11-26 01:08:21,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2022-11-26 01:08:21,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:08:21,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:08:22,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:08:22,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:08:22,380 INFO L321 Elim1Store]: treesize reduction 234, result has 33.5 percent of original size [2022-11-26 01:08:22,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 140 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 26 case distinctions, treesize of input 97 treesize of output 197 [2022-11-26 01:08:22,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:08:22,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:08:22,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:08:22,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:08:22,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 138 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 134 [2022-11-26 01:08:22,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2022-11-26 01:08:45,642 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:08:59,610 WARN L233 SmtUtils]: Spent 11.26s on a formula simplification. DAG size of input: 1061 DAG size of output: 1003 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:09:11,368 WARN L233 SmtUtils]: Spent 11.23s on a formula simplification. DAG size of input: 1071 DAG size of output: 1009 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:09:23,578 WARN L233 SmtUtils]: Spent 11.66s on a formula simplification. DAG size of input: 1088 DAG size of output: 1026 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:09:35,718 WARN L233 SmtUtils]: Spent 11.59s on a formula simplification. DAG size of input: 1081 DAG size of output: 1015 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:09:47,659 WARN L233 SmtUtils]: Spent 11.38s on a formula simplification. DAG size of input: 1090 DAG size of output: 1021 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:09:59,996 WARN L233 SmtUtils]: Spent 11.74s on a formula simplification. DAG size of input: 1107 DAG size of output: 1038 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:12,217 WARN L233 SmtUtils]: Spent 11.67s on a formula simplification. DAG size of input: 1113 DAG size of output: 1039 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:24,911 WARN L233 SmtUtils]: Spent 12.06s on a formula simplification. DAG size of input: 1121 DAG size of output: 1045 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:38,250 WARN L233 SmtUtils]: Spent 12.67s on a formula simplification. DAG size of input: 1136 DAG size of output: 1059 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:10:51,618 WARN L233 SmtUtils]: Spent 12.64s on a formula simplification. DAG size of input: 1142 DAG size of output: 1060 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:11:05,202 WARN L233 SmtUtils]: Spent 12.83s on a formula simplification. DAG size of input: 1150 DAG size of output: 1066 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:11:19,134 WARN L233 SmtUtils]: Spent 13.15s on a formula simplification. DAG size of input: 1165 DAG size of output: 1080 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:11:33,448 WARN L233 SmtUtils]: Spent 13.58s on a formula simplification. DAG size of input: 1165 DAG size of output: 1075 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:11:48,102 WARN L233 SmtUtils]: Spent 13.77s on a formula simplification. DAG size of input: 1173 DAG size of output: 1081 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:12:02,918 WARN L233 SmtUtils]: Spent 13.96s on a formula simplification. DAG size of input: 1188 DAG size of output: 1095 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:12:17,503 WARN L233 SmtUtils]: Spent 13.80s on a formula simplification. DAG size of input: 1192 DAG size of output: 1094 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:12:32,008 WARN L233 SmtUtils]: Spent 13.70s on a formula simplification. DAG size of input: 1200 DAG size of output: 1100 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:12:47,028 WARN L233 SmtUtils]: Spent 14.10s on a formula simplification. DAG size of input: 1215 DAG size of output: 1114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:13:02,079 WARN L233 SmtUtils]: Spent 14.13s on a formula simplification. DAG size of input: 1219 DAG size of output: 1113 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:13:17,361 WARN L233 SmtUtils]: Spent 14.24s on a formula simplification. DAG size of input: 1227 DAG size of output: 1119 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:13:33,401 WARN L233 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 1242 DAG size of output: 1133 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:13:49,210 WARN L233 SmtUtils]: Spent 14.83s on a formula simplification. DAG size of input: 1246 DAG size of output: 1132 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:14:05,300 WARN L233 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 1254 DAG size of output: 1138 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:14:21,949 WARN L233 SmtUtils]: Spent 15.52s on a formula simplification. DAG size of input: 1269 DAG size of output: 1152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:14:38,351 WARN L233 SmtUtils]: Spent 15.32s on a formula simplification. DAG size of input: 1273 DAG size of output: 1151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:14:55,361 WARN L233 SmtUtils]: Spent 15.87s on a formula simplification. DAG size of input: 1281 DAG size of output: 1157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:15:14,389 WARN L233 SmtUtils]: Spent 17.68s on a formula simplification. DAG size of input: 1296 DAG size of output: 1171 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:15:19,292 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '541#(and (<= |ULTIMATE.start_main_~__tmp_9~0#1| 1) (<= |ULTIMATE.start_main_~__tmp_6~0#1| 1) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~5#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~4#1|) (<= 0 ~__tmp_1075_2~0.base) (<= 1 ~__tmp_1075_1~0) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.offset|) (<= 4 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~4#1|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~4#1| 1) (<= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~4#1.base|) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1.base|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1| 1) (<= 0 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.base|) (<= ~__tmp_1075_1~0 1) (<= |ULTIMATE.start_main_~__tmp_8~0#1| 1) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~8#1| 1) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~0#1.offset|) (<= |ULTIMATE.start_main_~__tmp_7~0#1| 1) (<= 1 |ULTIMATE.start_main_~__tmp_9~0#1|) (<= |ULTIMATE.start_main_~__tmp_1~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~1#1.base|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~1#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~5#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~3#1| 1) (<= |ULTIMATE.start_main_~__tmp_10~0#1| 1) (<= |ULTIMATE.start_main_~__tmp_5~0#1| 1) (not (< (mod ~Id_MCDC_93~0 4294967296) 42)) (<= 2 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~2#1|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~6#1.base|) (<= 1 |ULTIMATE.start_main_~__tmp_10~0#1|) (= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~10#1| 0) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~7#1|) (<= 1 |ULTIMATE.start_main_~__tmp_6~0#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~6#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~5#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~4#1| 1) (<= 8 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~8#1|) (<= 1 |ULTIMATE.start_main_~__tmp_7~0#1|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~3#1| 1) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~8#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~0#1.base|) (<= 5 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~5#1|) (<= 3 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~3#1|) (<= 1 |ULTIMATE.start_main_~__tmp_3~0#1|) (<= 1 |ULTIMATE.start_main_~__tmp_5~0#1|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~0#1| 0) (<= 0 |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.base|) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~3#1|) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~2#1|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~6#1| 6) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.base|) (= |ULTIMATE.start_main_~main__Id_MCDC_116~0#1| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~5#1| 5) (<= 1 |ULTIMATE.start_main_~__tmp_8~0#1|) (<= 1 |ULTIMATE.start_main_~__tmp_4~0#1|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~7#1| 1) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~3#1.base|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~2#1.base|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~2#1| 1) (<= |ULTIMATE.start_main_~__tmp_4~0#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~0#1|) (<= 1 |ULTIMATE.start_main_~__tmp_2~0#1|) (<= 0 |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset|) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset|) (= |ULTIMATE.start_main_~__tmp_12~0#1| |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~10#1|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~4#1| 4) (= |ULTIMATE.start_main_~main__Id_MCDC_115~0#1| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_88~0#1.offset| 0) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~7#1| 1) (<= 6 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~6#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~5#1.base|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~1#1|) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~8#1| 1) (<= 7 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~7#1|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~2#1| 2) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~6#1|) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= 9 ~Id_MCDC_93~0) (<= 8 ~__tmp_1075_0~0) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~0#1| 1) (<= |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~2#1| 1) (<= 9 |ULTIMATE.start_main_~Id_MCDC_89__Id_MCDC_96~0#1|) (<= |ULTIMATE.start_main_~#main__Id_MCDC_119~0#1.offset| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~1#1| 1) (<= 1 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~1#1|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~9#1| 0) (= ~__return_main~0 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~7#1| 7) (<= 1 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~8#1|) (= |ULTIMATE.start_main_~#Id_MCDC_89__Id_MCDC_95~0#1.offset| 0) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_2~3#1| 3) (<= 0 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~7#1.base|) (<= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_0~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~0#1|) (= |#NULL.base| 0) (= |ULTIMATE.start_main_~Id_MCDC_89____CPAchecker_TMP_1~6#1| 1) (<= 1 |ULTIMATE.start_main_~__VERIFIER_assert__Id_MCDC_92~8#1|))' at error location [2022-11-26 01:15:19,293 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 01:15:19,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 01:15:19,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 30 [2022-11-26 01:15:19,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528852530] [2022-11-26 01:15:19,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 01:15:19,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-26 01:15:19,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:15:19,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-26 01:15:19,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=715, Invalid=3191, Unknown=0, NotChecked=0, Total=3906 [2022-11-26 01:15:19,299 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 30 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 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) [2022-11-26 01:15:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:15:27,359 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2022-11-26 01:15:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-26 01:15:27,360 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 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 48 [2022-11-26 01:15:27,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:15:27,361 INFO L225 Difference]: With dead ends: 114 [2022-11-26 01:15:27,362 INFO L226 Difference]: Without dead ends: 111 [2022-11-26 01:15:27,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 401.4s TimeCoverageRelationStatistics Valid=1491, Invalid=5481, Unknown=0, NotChecked=0, Total=6972 [2022-11-26 01:15:27,367 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 335 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 01:15:27,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 204 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 01:15:27,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-26 01:15:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2022-11-26 01:15:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0092592592592593) internal successors, (109), 108 states have internal predecessors, (109), 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) [2022-11-26 01:15:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2022-11-26 01:15:27,382 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 48 [2022-11-26 01:15:27,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:15:27,383 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2022-11-26 01:15:27,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.6) internal successors, (108), 30 states have internal predecessors, (108), 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) [2022-11-26 01:15:27,384 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2022-11-26 01:15:27,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-26 01:15:27,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:15:27,387 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:15:27,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 01:15:27,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-26 01:15:27,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 01:15:27,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:15:27,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1651985676, now seen corresponding path program 2 times [2022-11-26 01:15:27,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:15:27,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206940884] [2022-11-26 01:15:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:15:27,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:15:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:15:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:15:29,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:15:29,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206940884] [2022-11-26 01:15:29,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206940884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 01:15:29,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615415546] [2022-11-26 01:15:29,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 01:15:29,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 01:15:29,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:15:29,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 01:15:29,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be0d4ec3-0be0-473f-a631-19d071418bc9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 01:15:30,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-26 01:15:30,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 01:15:30,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-26 01:15:30,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 01:15:31,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:15:31,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:15:31,244 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 01:15:31,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 22 [2022-11-26 01:15:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-26 01:15:31,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 01:15:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-11-26 01:15:35,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615415546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 01:15:35,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1531039691] [2022-11-26 01:15:35,266 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-26 01:15:35,266 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 01:15:35,266 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 01:15:35,267 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 01:15:35,267 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 01:15:35,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:15:35,619 INFO L321 Elim1Store]: treesize reduction 252, result has 33.5 percent of original size [2022-11-26 01:15:35,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 17 select indices, 17 select index equivalence classes, 122 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 193 [2022-11-26 01:15:35,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:15:35,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 15 select indices, 15 select index equivalence classes, 121 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 126 [2022-11-26 01:15:36,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2022-11-26 01:15:36,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:15:36,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:15:36,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:15:36,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:15:36,469 INFO L321 Elim1Store]: treesize reduction 130, result has 47.6 percent of original size [2022-11-26 01:15:36,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 16 select indices, 16 select index equivalence classes, 125 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 13 case distinctions, treesize of input 87 treesize of output 186 [2022-11-26 01:15:36,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 820 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 370 treesize of output 450 [2022-11-26 01:15:36,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:15:36,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:15:36,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:15:36,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 01:15:37,116 INFO L321 Elim1Store]: treesize reduction 234, result has 33.5 percent of original size [2022-11-26 01:15:37,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 18 select indices, 18 select index equivalence classes, 140 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 26 case distinctions, treesize of input 97 treesize of output 197 [2022-11-26 01:15:59,139 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 01:16:14,579 WARN L233 SmtUtils]: Spent 11.74s on a formula simplification. DAG size of input: 1061 DAG size of output: 1003 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:16:27,089 WARN L233 SmtUtils]: Spent 11.50s on a formula simplification. DAG size of input: 1071 DAG size of output: 1009 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:16:40,178 WARN L233 SmtUtils]: Spent 12.09s on a formula simplification. DAG size of input: 1088 DAG size of output: 1026 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:16:52,455 WARN L233 SmtUtils]: Spent 11.23s on a formula simplification. DAG size of input: 1081 DAG size of output: 1015 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:17:05,157 WARN L233 SmtUtils]: Spent 11.66s on a formula simplification. DAG size of input: 1090 DAG size of output: 1021 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:17:18,493 WARN L233 SmtUtils]: Spent 12.27s on a formula simplification. DAG size of input: 1107 DAG size of output: 1038 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:17:31,914 WARN L233 SmtUtils]: Spent 12.33s on a formula simplification. DAG size of input: 1100 DAG size of output: 1027 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:17:45,213 WARN L233 SmtUtils]: Spent 12.25s on a formula simplification. DAG size of input: 1109 DAG size of output: 1033 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:17:58,860 WARN L233 SmtUtils]: Spent 12.57s on a formula simplification. DAG size of input: 1126 DAG size of output: 1050 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:18:13,002 WARN L233 SmtUtils]: Spent 12.91s on a formula simplification. DAG size of input: 1132 DAG size of output: 1051 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:18:26,922 WARN L233 SmtUtils]: Spent 12.77s on a formula simplification. DAG size of input: 1140 DAG size of output: 1057 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:18:41,474 WARN L233 SmtUtils]: Spent 13.24s on a formula simplification. DAG size of input: 1155 DAG size of output: 1071 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:18:56,452 WARN L233 SmtUtils]: Spent 13.53s on a formula simplification. DAG size of input: 1161 DAG size of output: 1072 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:19:11,551 WARN L233 SmtUtils]: Spent 13.80s on a formula simplification. DAG size of input: 1169 DAG size of output: 1078 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:19:27,088 WARN L233 SmtUtils]: Spent 14.03s on a formula simplification. DAG size of input: 1184 DAG size of output: 1092 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:19:42,762 WARN L233 SmtUtils]: Spent 14.29s on a formula simplification. DAG size of input: 1184 DAG size of output: 1087 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:19:58,663 WARN L233 SmtUtils]: Spent 14.28s on a formula simplification. DAG size of input: 1192 DAG size of output: 1093 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:20:15,624 WARN L233 SmtUtils]: Spent 15.47s on a formula simplification. DAG size of input: 1207 DAG size of output: 1107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:20:32,276 WARN L233 SmtUtils]: Spent 15.11s on a formula simplification. DAG size of input: 1213 DAG size of output: 1108 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:20:49,574 WARN L233 SmtUtils]: Spent 15.46s on a formula simplification. DAG size of input: 1221 DAG size of output: 1114 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:21:07,718 WARN L233 SmtUtils]: Spent 16.31s on a formula simplification. DAG size of input: 1236 DAG size of output: 1128 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:21:26,219 WARN L233 SmtUtils]: Spent 16.85s on a formula simplification. DAG size of input: 1242 DAG size of output: 1129 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:21:45,042 WARN L233 SmtUtils]: Spent 16.93s on a formula simplification. DAG size of input: 1250 DAG size of output: 1135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 01:22:04,671 WARN L233 SmtUtils]: Spent 17.56s on a formula simplification. DAG size of input: 1265 DAG size of output: 1149 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)