./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/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_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/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_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/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 376367d14f0ef5deff3321a7267050cf9f2383eb99d0a19dad6a556c0772ff28 --- 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 [2022-11-25 22:30:54,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:30:54,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:30:54,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:30:54,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:30:54,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:30:54,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:30:54,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:30:54,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:30:54,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:30:54,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:30:54,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:30:54,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:30:54,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:30:54,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:30:54,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:30:54,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:30:54,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:30:54,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:30:54,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:30:54,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:30:54,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:30:54,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:30:54,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:30:54,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:30:54,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:30:54,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:30:54,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:30:54,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:30:54,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:30:54,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:30:54,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:30:54,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:30:54,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:30:54,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:30:54,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:30:54,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:30:54,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:30:54,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:30:54,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:30:54,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:30:54,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:30:54,401 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:30:54,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:30:54,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:30:54,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:30:54,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:30:54,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:30:54,403 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:30:54,403 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:30:54,403 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:30:54,404 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:30:54,404 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:30:54,404 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:30:54,404 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:30:54,404 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:30:54,404 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:30:54,405 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:30:54,405 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:30:54,405 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:30:54,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:30:54,406 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:30:54,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:30:54,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:30:54,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:30:54,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:30:54,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:30:54,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:30:54,407 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:30:54,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:30:54,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:30:54,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:30:54,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:30:54,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:30:54,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:30:54,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:30:54,409 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:30:54,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:30:54,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:30:54,410 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:30:54,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:30:54,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:30:54,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:30:54,410 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_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376367d14f0ef5deff3321a7267050cf9f2383eb99d0a19dad6a556c0772ff28 [2022-11-25 22:30:54,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:30:54,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:30:54,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:30:54,747 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:30:54,751 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:30:54,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c [2022-11-25 22:30:57,844 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:30:58,032 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:30:58,033 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c [2022-11-25 22:30:58,039 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/data/7c7294c52/7bc45da05d1449bb8ecff2cb8ea0f50a/FLAG9a77a52a9 [2022-11-25 22:30:58,055 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/data/7c7294c52/7bc45da05d1449bb8ecff2cb8ea0f50a [2022-11-25 22:30:58,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:30:58,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:30:58,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:30:58,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:30:58,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:30:58,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4409c747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58, skipping insertion in model container [2022-11-25 22:30:58,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:30:58,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:30:58,242 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_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c[525,538] [2022-11-25 22:30:58,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:30:58,285 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:30:58,297 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_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c[525,538] [2022-11-25 22:30:58,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:30:58,326 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:30:58,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58 WrapperNode [2022-11-25 22:30:58,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:30:58,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:30:58,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:30:58,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:30:58,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,380 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-11-25 22:30:58,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:30:58,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:30:58,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:30:58,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:30:58,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,418 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:30:58,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:30:58,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:30:58,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:30:58,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58" (1/1) ... [2022-11-25 22:30:58,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:30:58,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:58,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:30:58,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:30:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:30:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:30:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:30:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:30:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:30:58,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:30:58,596 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:30:58,598 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:30:58,890 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:30:58,930 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:30:58,930 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 22:30:58,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:30:58 BoogieIcfgContainer [2022-11-25 22:30:58,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:30:58,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:30:58,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:30:58,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:30:58,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:30:58" (1/3) ... [2022-11-25 22:30:58,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69825fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:30:58, skipping insertion in model container [2022-11-25 22:30:58,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:30:58" (2/3) ... [2022-11-25 22:30:58,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69825fa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:30:58, skipping insertion in model container [2022-11-25 22:30:58,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:30:58" (3/3) ... [2022-11-25 22:30:58,957 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound100.c [2022-11-25 22:30:58,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:30:58,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:30:59,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:30:59,071 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;@7e182cf7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:30:59,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:30:59,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-25 22:30:59,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-25 22:30:59,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:59,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:59,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:59,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:59,090 INFO L85 PathProgramCache]: Analyzing trace with hash -678335095, now seen corresponding path program 1 times [2022-11-25 22:30:59,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:59,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873511115] [2022-11-25 22:30:59,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:59,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:59,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:59,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873511115] [2022-11-25 22:30:59,309 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 22:30:59,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867434583] [2022-11-25 22:30:59,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:59,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:59,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:59,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:59,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:30:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:59,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 22:30:59,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:59,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:59,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867434583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:59,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:59,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:30:59,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133698001] [2022-11-25 22:30:59,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:59,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:30:59,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:59,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:30:59,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:30:59,513 INFO L87 Difference]: Start difference. First operand has 24 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:59,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:59,559 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2022-11-25 22:30:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:30:59,562 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-25 22:30:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:59,568 INFO L225 Difference]: With dead ends: 44 [2022-11-25 22:30:59,569 INFO L226 Difference]: Without dead ends: 22 [2022-11-25 22:30:59,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:30:59,575 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:59,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:30:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-25 22:30:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-25 22:30:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 22:30:59,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2022-11-25 22:30:59,610 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 7 [2022-11-25 22:30:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:59,611 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2022-11-25 22:30:59,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2022-11-25 22:30:59,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 22:30:59,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:59,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:59,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:59,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 22:30:59,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:59,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:59,819 INFO L85 PathProgramCache]: Analyzing trace with hash 520368722, now seen corresponding path program 1 times [2022-11-25 22:30:59,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:59,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872224824] [2022-11-25 22:30:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:59,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:59,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:59,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872224824] [2022-11-25 22:30:59,855 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-25 22:30:59,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715381816] [2022-11-25 22:30:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:59,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:59,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:59,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:59,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:30:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:59,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:30:59,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:30:59,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:59,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715381816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:59,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:59,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:30:59,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257044521] [2022-11-25 22:30:59,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:59,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:30:59,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:59,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:30:59,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:30:59,956 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:59,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:59,984 INFO L93 Difference]: Finished difference Result 42 states and 63 transitions. [2022-11-25 22:30:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:30:59,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-25 22:30:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:59,986 INFO L225 Difference]: With dead ends: 42 [2022-11-25 22:30:59,986 INFO L226 Difference]: Without dead ends: 24 [2022-11-25 22:30:59,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:30:59,988 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:59,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:30:59,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-25 22:30:59,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-25 22:30:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 22:30:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2022-11-25 22:30:59,997 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 9 [2022-11-25 22:30:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:59,997 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2022-11-25 22:30:59,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:30:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2022-11-25 22:30:59,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 22:30:59,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:59,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:00,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:00,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:00,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:00,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1389535714, now seen corresponding path program 1 times [2022-11-25 22:31:00,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:00,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687112907] [2022-11-25 22:31:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:00,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:00,226 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:31:00,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177679479] [2022-11-25 22:31:00,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:00,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:00,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:00,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:00,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:31:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:00,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:31:00,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:00,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:00,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:00,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687112907] [2022-11-25 22:31:00,361 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:31:00,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177679479] [2022-11-25 22:31:00,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177679479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:00,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:31:00,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:31:00,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623585793] [2022-11-25 22:31:00,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:00,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:31:00,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:00,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:31:00,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:31:00,378 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:00,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:00,441 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2022-11-25 22:31:00,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:31:00,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 22:31:00,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:00,443 INFO L225 Difference]: With dead ends: 37 [2022-11-25 22:31:00,443 INFO L226 Difference]: Without dead ends: 28 [2022-11-25 22:31:00,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:31:00,445 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:00,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 111 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:31:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-25 22:31:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-11-25 22:31:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-25 22:31:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2022-11-25 22:31:00,453 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 10 [2022-11-25 22:31:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:00,456 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2022-11-25 22:31:00,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:00,457 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2022-11-25 22:31:00,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 22:31:00,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:00,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:00,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:00,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:00,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:00,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:00,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1388046164, now seen corresponding path program 1 times [2022-11-25 22:31:00,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:00,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591930117] [2022-11-25 22:31:00,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:00,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:01,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:01,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591930117] [2022-11-25 22:31:01,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591930117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:01,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:31:01,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:31:01,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242969636] [2022-11-25 22:31:01,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:01,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:31:01,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:01,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:31:01,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:31:01,253 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:02,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:02,643 INFO L93 Difference]: Finished difference Result 59 states and 89 transitions. [2022-11-25 22:31:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:31:02,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 22:31:02,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:02,647 INFO L225 Difference]: With dead ends: 59 [2022-11-25 22:31:02,647 INFO L226 Difference]: Without dead ends: 39 [2022-11-25 22:31:02,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:31:02,649 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:02,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 107 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 22:31:02,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-25 22:31:02,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-25 22:31:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-25 22:31:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2022-11-25 22:31:02,687 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 10 [2022-11-25 22:31:02,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:02,687 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2022-11-25 22:31:02,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:02,688 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2022-11-25 22:31:02,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 22:31:02,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:02,689 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:02,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 22:31:02,689 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:02,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:02,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1970023331, now seen corresponding path program 1 times [2022-11-25 22:31:02,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:02,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81208826] [2022-11-25 22:31:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:02,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:02,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:31:02,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602706954] [2022-11-25 22:31:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:02,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:02,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:02,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:02,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:31:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:02,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:31:02,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:02,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:02,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:02,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81208826] [2022-11-25 22:31:02,830 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:31:02,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602706954] [2022-11-25 22:31:02,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602706954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:31:02,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1181237219] [2022-11-25 22:31:02,859 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-25 22:31:02,859 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:31:02,871 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:31:02,877 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:31:02,878 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:31:03,250 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 14 for LOIs [2022-11-25 22:31:03,257 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:31:03,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1181237219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:03,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:31:03,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4] total 15 [2022-11-25 22:31:03,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802049792] [2022-11-25 22:31:03,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:03,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:31:03,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:31:03,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-25 22:31:03,656 INFO L87 Difference]: Start difference. First operand 39 states and 56 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:04,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:04,579 INFO L93 Difference]: Finished difference Result 78 states and 117 transitions. [2022-11-25 22:31:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 22:31:04,581 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-25 22:31:04,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:04,582 INFO L225 Difference]: With dead ends: 78 [2022-11-25 22:31:04,582 INFO L226 Difference]: Without dead ends: 59 [2022-11-25 22:31:04,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-25 22:31:04,583 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:04,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 86 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 22:31:04,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-25 22:31:04,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2022-11-25 22:31:04,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.24) internal successors, (31), 28 states have internal predecessors, (31), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-25 22:31:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2022-11-25 22:31:04,602 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 12 [2022-11-25 22:31:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:04,603 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2022-11-25 22:31:04,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2022-11-25 22:31:04,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 22:31:04,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:04,604 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:04,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:04,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:04,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:04,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:04,805 INFO L85 PathProgramCache]: Analyzing trace with hash 600084205, now seen corresponding path program 1 times [2022-11-25 22:31:04,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:04,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541966773] [2022-11-25 22:31:04,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:04,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:04,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:31:04,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450094363] [2022-11-25 22:31:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:04,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:04,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:04,820 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:04,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:31:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:04,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:31:04,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:04,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:04,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:04,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541966773] [2022-11-25 22:31:04,967 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:31:04,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450094363] [2022-11-25 22:31:04,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450094363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:31:04,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [298022245] [2022-11-25 22:31:04,971 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-25 22:31:04,971 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:31:04,971 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:31:04,971 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:31:04,972 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:31:05,231 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 16 for LOIs [2022-11-25 22:31:05,241 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:31:05,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [298022245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:05,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:31:05,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 5] total 17 [2022-11-25 22:31:05,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209381395] [2022-11-25 22:31:05,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:05,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:31:05,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:05,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:31:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-25 22:31:05,782 INFO L87 Difference]: Start difference. First operand 47 states and 64 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:08,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:08,174 INFO L93 Difference]: Finished difference Result 68 states and 96 transitions. [2022-11-25 22:31:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 22:31:08,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 22:31:08,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:08,176 INFO L225 Difference]: With dead ends: 68 [2022-11-25 22:31:08,176 INFO L226 Difference]: Without dead ends: 65 [2022-11-25 22:31:08,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-25 22:31:08,177 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:08,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 121 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 22:31:08,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-25 22:31:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2022-11-25 22:31:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 30 states have internal predecessors, (34), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-25 22:31:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2022-11-25 22:31:08,209 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 13 [2022-11-25 22:31:08,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:08,210 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2022-11-25 22:31:08,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:08,211 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2022-11-25 22:31:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 22:31:08,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:08,215 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:08,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 22:31:08,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:08,415 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:08,416 INFO L85 PathProgramCache]: Analyzing trace with hash 601573755, now seen corresponding path program 1 times [2022-11-25 22:31:08,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:08,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673338410] [2022-11-25 22:31:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:08,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:08,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:08,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:08,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673338410] [2022-11-25 22:31:08,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673338410] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:08,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568224967] [2022-11-25 22:31:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:08,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:08,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:08,795 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:08,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:31:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:08,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 22:31:08,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:08,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:31:09,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568224967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:31:09,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1020092940] [2022-11-25 22:31:09,104 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-25 22:31:09,104 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:31:09,105 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:31:09,105 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:31:09,105 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:31:09,331 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 36 for LOIs [2022-11-25 22:31:09,405 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:31:10,298 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1216#(and (<= 2 ~counter~0) (< ~counter~0 101) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:31:10,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:31:10,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:31:10,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-25 22:31:10,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022382945] [2022-11-25 22:31:10,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:31:10,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 22:31:10,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:10,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 22:31:10,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2022-11-25 22:31:10,301 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:12,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:31:16,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:31:19,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:31:21,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:31:25,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:31:28,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:31:30,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:31:36,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:31:38,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:31:41,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:31:45,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:31:47,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:31:48,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:48,147 INFO L93 Difference]: Finished difference Result 116 states and 177 transitions. [2022-11-25 22:31:48,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 22:31:48,147 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 22:31:48,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:48,149 INFO L225 Difference]: With dead ends: 116 [2022-11-25 22:31:48,149 INFO L226 Difference]: Without dead ends: 89 [2022-11-25 22:31:48,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-11-25 22:31:48,150 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 55 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 122 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:48,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 298 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 398 Invalid, 10 Unknown, 0 Unchecked, 37.6s Time] [2022-11-25 22:31:48,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-25 22:31:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2022-11-25 22:31:48,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 37 states have internal predecessors, (42), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-25 22:31:48,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 98 transitions. [2022-11-25 22:31:48,176 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 98 transitions. Word has length 13 [2022-11-25 22:31:48,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:48,176 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 98 transitions. [2022-11-25 22:31:48,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:31:48,176 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 98 transitions. [2022-11-25 22:31:48,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-25 22:31:48,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:48,177 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:48,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:48,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:48,383 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:48,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:48,384 INFO L85 PathProgramCache]: Analyzing trace with hash -339513844, now seen corresponding path program 1 times [2022-11-25 22:31:48,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:48,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395334671] [2022-11-25 22:31:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:48,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:48,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:31:48,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981324239] [2022-11-25 22:31:48,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:48,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:48,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:48,394 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:48,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 22:31:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:48,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 22:31:48,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:31:48,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:50,646 WARN L859 $PredicateComparison]: unable to prove that (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) is different from true [2022-11-25 22:31:54,942 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) (not (= (mod (* |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296))))) is different from false [2022-11-25 22:31:56,948 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) (not (= (mod (* |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296))))) is different from true [2022-11-25 22:31:56,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:56,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395334671] [2022-11-25 22:31:56,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:31:56,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981324239] [2022-11-25 22:31:56,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981324239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:56,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1627295059] [2022-11-25 22:31:56,952 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-25 22:31:56,953 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:31:56,953 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:31:56,953 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:31:56,953 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:31:57,187 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 70 for LOIs [2022-11-25 22:31:57,361 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:31:58,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1627295059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:58,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:31:58,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 16 [2022-11-25 22:31:58,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474070931] [2022-11-25 22:31:58,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:58,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:31:58,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:58,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:31:58,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=216, Unknown=3, NotChecked=62, Total=342 [2022-11-25 22:31:58,640 INFO L87 Difference]: Start difference. First operand 67 states and 98 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:32:02,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:32:02,377 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2022-11-25 22:32:02,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 22:32:02,378 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-11-25 22:32:02,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:32:02,380 INFO L225 Difference]: With dead ends: 74 [2022-11-25 22:32:02,380 INFO L226 Difference]: Without dead ends: 54 [2022-11-25 22:32:02,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=61, Invalid=216, Unknown=3, NotChecked=62, Total=342 [2022-11-25 22:32:02,382 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:32:02,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 107 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 22:32:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-25 22:32:02,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-25 22:32:02,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-25 22:32:02,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 79 transitions. [2022-11-25 22:32:02,396 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 79 transitions. Word has length 20 [2022-11-25 22:32:02,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:32:02,396 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 79 transitions. [2022-11-25 22:32:02,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:32:02,397 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 79 transitions. [2022-11-25 22:32:02,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 22:32:02,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:32:02,398 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:32:02,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 22:32:02,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:32:02,604 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:32:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:32:02,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1744099301, now seen corresponding path program 1 times [2022-11-25 22:32:02,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:32:02,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550392193] [2022-11-25 22:32:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:02,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:32:02,612 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:32:02,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736419704] [2022-11-25 22:32:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:02,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:32:02,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:32:02,614 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:32:02,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 22:32:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:32:02,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 22:32:02,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 22:32:03,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:32:08,578 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~q~0#1| Int) (|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) 4294967296) (mod (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) 4294967296))) (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 12) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1| 4294967284) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296) 0))) is different from false [2022-11-25 22:32:10,580 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~q~0#1| Int) (|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) 4294967296) (mod (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) 4294967296))) (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 12) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1| 4294967284) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296) 0))) is different from true [2022-11-25 22:32:10,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:32:10,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550392193] [2022-11-25 22:32:10,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:32:10,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736419704] [2022-11-25 22:32:10,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736419704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:32:10,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2089097042] [2022-11-25 22:32:10,583 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-25 22:32:10,583 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:32:10,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:32:10,584 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:32:10,584 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:32:13,055 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2022-11-25 22:32:13,061 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:32:23,681 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1919#(and (<= 2 ~counter~0) (<= ~counter~0 101) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:32:23,681 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:32:23,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:32:23,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-11-25 22:32:23,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137588323] [2022-11-25 22:32:23,682 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 22:32:23,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:32:23,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:32:23,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:32:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=367, Unknown=3, NotChecked=40, Total=506 [2022-11-25 22:32:23,684 INFO L87 Difference]: Start difference. First operand 54 states and 79 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:32:25,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:32:28,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:32:30,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:32:32,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:32:34,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:32:37,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:32:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:32:38,192 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2022-11-25 22:32:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 22:32:38,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-25 22:32:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:32:38,194 INFO L225 Difference]: With dead ends: 64 [2022-11-25 22:32:38,194 INFO L226 Difference]: Without dead ends: 61 [2022-11-25 22:32:38,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=110, Invalid=443, Unknown=3, NotChecked=44, Total=600 [2022-11-25 22:32:38,196 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 11 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:32:38,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 57 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 14.4s Time] [2022-11-25 22:32:38,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-25 22:32:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-25 22:32:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 36 states have internal predecessors, (40), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-25 22:32:38,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2022-11-25 22:32:38,211 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 23 [2022-11-25 22:32:38,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:32:38,212 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2022-11-25 22:32:38,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:32:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2022-11-25 22:32:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 22:32:38,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:32:38,214 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:32:38,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 22:32:38,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-25 22:32:38,419 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:32:38,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:32:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash -787687870, now seen corresponding path program 1 times [2022-11-25 22:32:38,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:32:38,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144039057] [2022-11-25 22:32:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:38,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:32:38,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:32:38,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822004296] [2022-11-25 22:32:38,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:38,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:32:38,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:32:38,431 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:32:38,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 22:32:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:32:38,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 22:32:38,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-25 22:32:38,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:32:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-25 22:32:38,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:32:38,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144039057] [2022-11-25 22:32:38,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:32:38,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822004296] [2022-11-25 22:32:38,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822004296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:32:38,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [656243948] [2022-11-25 22:32:38,732 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-25 22:32:38,733 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:32:38,733 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:32:38,734 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:32:38,734 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:32:52,198 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-25 22:32:52,259 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:33:02,362 WARN L837 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |c_#NULL.offset| 0) (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (= |c_#NULL.base| 0) (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0)) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |c_#StackHeapBarrier|) (<= 2 c_~counter~0) (<= c_~counter~0 101)) is different from false [2022-11-25 22:33:04,370 WARN L837 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |c_#NULL.offset| 0) (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (= |c_#NULL.base| 0) (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |c_#StackHeapBarrier|) (<= 2 c_~counter~0) (<= c_~counter~0 101)) is different from false [2022-11-25 22:33:31,543 WARN L233 SmtUtils]: Spent 15.85s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:33:33,550 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|))) (and (not (= (ite (= (mod (+ .cse0 .cse1 (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |c_#NULL.offset| 0) (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (= |c_#NULL.base| 0) (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (not (= (ite (= (mod (+ .cse0 .cse1) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |c_#StackHeapBarrier|) (<= 2 c_~counter~0) (<= c_~counter~0 101))) is different from false [2022-11-25 22:33:33,610 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2409#(and (<= 2 ~counter~0) (<= 0 |#NULL.base|) (<= ~counter~0 102) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-25 22:33:33,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:33:33,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:33:33,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2022-11-25 22:33:33,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277052983] [2022-11-25 22:33:33,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:33:33,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:33:33,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:33:33,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:33:33,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=540, Unknown=9, NotChecked=150, Total=812 [2022-11-25 22:33:33,613 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 22:33:36,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:33:38,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:33:42,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:33:44,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:33:50,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:33:54,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:33:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:33:55,890 INFO L93 Difference]: Finished difference Result 255 states and 327 transitions. [2022-11-25 22:33:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 22:33:55,891 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 46 [2022-11-25 22:33:55,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:33:55,895 INFO L225 Difference]: With dead ends: 255 [2022-11-25 22:33:55,896 INFO L226 Difference]: Without dead ends: 246 [2022-11-25 22:33:55,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 41.5s TimeCoverageRelationStatistics Valid=155, Invalid=778, Unknown=9, NotChecked=180, Total=1122 [2022-11-25 22:33:55,902 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 116 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 25 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:33:55,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 248 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 171 Invalid, 6 Unknown, 0 Unchecked, 22.2s Time] [2022-11-25 22:33:55,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-25 22:33:55,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 232. [2022-11-25 22:33:55,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 127 states have (on average 1.1338582677165354) internal successors, (144), 132 states have internal predecessors, (144), 81 states have call successors, (81), 23 states have call predecessors, (81), 23 states have return successors, (76), 76 states have call predecessors, (76), 76 states have call successors, (76) [2022-11-25 22:33:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 301 transitions. [2022-11-25 22:33:55,949 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 301 transitions. Word has length 46 [2022-11-25 22:33:55,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:33:55,950 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 301 transitions. [2022-11-25 22:33:55,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 22:33:55,950 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 301 transitions. [2022-11-25 22:33:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 22:33:55,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:33:55,953 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:33:55,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-25 22:33:56,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:33:56,158 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:33:56,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:33:56,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1687602719, now seen corresponding path program 1 times [2022-11-25 22:33:56,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:33:56,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271082047] [2022-11-25 22:33:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:33:56,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:33:56,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:33:56,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144588194] [2022-11-25 22:33:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:33:56,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:33:56,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:33:56,179 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:33:56,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 22:33:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:33:56,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-25 22:33:56,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:33:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 22:33:56,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:34:22,789 WARN L233 SmtUtils]: Spent 12.74s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:34:22,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:34:22,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271082047] [2022-11-25 22:34:22,791 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:34:22,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144588194] [2022-11-25 22:34:22,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144588194] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:34:22,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [760322809] [2022-11-25 22:34:22,792 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-25 22:34:22,793 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:34:22,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:34:22,793 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:34:22,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:34:46,658 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2022-11-25 22:34:46,663 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:35:14,515 WARN L233 SmtUtils]: Spent 14.29s on a formula simplification. DAG size of input: 51 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:36:33,332 WARN L233 SmtUtils]: Spent 52.14s on a formula simplification. DAG size of input: 71 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:36:35,339 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse1 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse2 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse9 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse10 (<= 0 |c_#StackHeapBarrier|)) (.cse11 (<= 2 c_~counter~0)) (.cse12 (<= c_~counter~0 101))) (and .cse0 .cse1 (<= 0 |c_#NULL.base|) .cse2 (let ((.cse3 (= |c_#NULL.offset| 0)) (.cse4 (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse5 (= |c_#NULL.base| 0)) (.cse6 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse7 (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0))) (.cse8 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)))) (or (and .cse0 .cse1 .cse3 .cse4 .cse5 .cse2 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 (= |c_ULTIMATE.start_main_~p~0#1| 0) .cse3 .cse4 .cse5 .cse2 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) .cse9 (<= 0 |c_#NULL.offset|) .cse10 (<= |c_#NULL.base| 0) (<= |c_#NULL.offset| 0) .cse11 .cse12)) is different from false [2022-11-25 22:36:37,354 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse1 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse2 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse3 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse4 (<= 0 |c_#StackHeapBarrier|)) (.cse5 (<= 2 c_~counter~0)) (.cse6 (<= c_~counter~0 101))) (and .cse0 .cse1 (<= 0 |c_#NULL.base|) .cse2 .cse3 (<= 0 |c_#NULL.offset|) .cse4 (<= |c_#NULL.base| 0) (<= |c_#NULL.offset| 0) .cse5 .cse6 (let ((.cse7 (= |c_#NULL.offset| 0)) (.cse8 (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse9 (= |c_#NULL.base| 0)) (.cse10 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse11 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0))) (.cse12 (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0))) (.cse13 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)))) (or (and .cse0 .cse1 .cse7 .cse8 .cse9 .cse2 .cse10 .cse11 .cse12 .cse13 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 (= |c_ULTIMATE.start_main_~p~0#1| 0) .cse7 .cse8 .cse9 .cse2 .cse10 .cse11 .cse12 .cse13 .cse3 .cse4 .cse5 .cse6))))) is different from false [2022-11-25 22:37:58,905 WARN L233 SmtUtils]: Spent 58.28s on a formula simplification. DAG size of input: 107 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:58,909 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3375#(and (<= 2 ~counter~0) (<= ~counter~0 101) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:37:58,915 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:37:58,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:37:58,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-11-25 22:37:58,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425228682] [2022-11-25 22:37:58,916 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 22:37:58,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:37:58,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:37:58,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:37:58,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=736, Unknown=31, NotChecked=114, Total=992 [2022-11-25 22:37:58,919 INFO L87 Difference]: Start difference. First operand 232 states and 301 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 22:38:03,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:38:06,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:38:10,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:38:16,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:38:18,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-25 22:38:18,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:38:18,831 INFO L93 Difference]: Finished difference Result 253 states and 324 transitions. [2022-11-25 22:38:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 22:38:18,832 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2022-11-25 22:38:18,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:38:18,834 INFO L225 Difference]: With dead ends: 253 [2022-11-25 22:38:18,835 INFO L226 Difference]: Without dead ends: 251 [2022-11-25 22:38:18,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 216.6s TimeCoverageRelationStatistics Valid=125, Invalid=844, Unknown=31, NotChecked=122, Total=1122 [2022-11-25 22:38:18,836 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 20 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:38:18,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 158 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 442 Invalid, 5 Unknown, 0 Unchecked, 19.8s Time] [2022-11-25 22:38:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-25 22:38:18,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2022-11-25 22:38:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 138 states have (on average 1.1231884057971016) internal successors, (155), 144 states have internal predecessors, (155), 82 states have call successors, (82), 26 states have call predecessors, (82), 26 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2022-11-25 22:38:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 314 transitions. [2022-11-25 22:38:18,881 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 314 transitions. Word has length 49 [2022-11-25 22:38:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:38:18,882 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 314 transitions. [2022-11-25 22:38:18,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 22:38:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 314 transitions. [2022-11-25 22:38:18,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 22:38:18,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:38:18,885 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:38:18,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 22:38:19,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:19,090 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:38:19,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:38:19,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1629435887, now seen corresponding path program 2 times [2022-11-25 22:38:19,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:38:19,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939907387] [2022-11-25 22:38:19,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:38:19,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:38:19,098 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 22:38:19,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777326553] [2022-11-25 22:38:19,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:38:19,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:38:19,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:38:19,105 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:38:19,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa2c86ce-16f3-435b-92eb-7fdda18a7ade/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 22:38:19,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 22:38:19,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:38:19,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 22:38:19,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:38:19,600 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-25 22:38:19,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:38:26,505 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296))) (or (= .cse0 1) (let ((.cse6 (div (mod |c_ULTIMATE.start_main_~p~0#1| 4294967296) 2)) (.cse5 (div .cse0 4))) (let ((.cse4 (<= (mod (+ .cse5 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (.cse2 (* .cse5 |c_ULTIMATE.start_main_~r~0#1|)) (.cse3 (* .cse6 .cse6)) (.cse1 (mod (* |c_ULTIMATE.start_main_~n~0#1| .cse5) 4294967296))) (and (or (= .cse1 (mod (+ .cse2 .cse3) 4294967296)) .cse4) (or (not .cse4) (= (mod (+ .cse2 .cse3 (* .cse5 |c_ULTIMATE.start_main_~p~0#1| 4294967295) (* .cse5 2 .cse6)) 4294967296) .cse1))))))) is different from true [2022-11-25 22:40:02,291 WARN L233 SmtUtils]: Spent 23.94s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:41:03,224 WARN L233 SmtUtils]: Spent 17.07s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:41:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 4 not checked. [2022-11-25 22:41:33,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:41:33,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939907387] [2022-11-25 22:41:33,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:41:33,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777326553] [2022-11-25 22:41:33,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777326553] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:41:33,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1716635509] [2022-11-25 22:41:33,757 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-25 22:41:33,757 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:41:33,758 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:41:33,758 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:41:33,758 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:41:54,613 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2022-11-25 22:41:54,618 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:42:32,776 WARN L233 SmtUtils]: Spent 14.01s on a formula simplification. DAG size of input: 51 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:42:34,781 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse1 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse2 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse3 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse9 (<= 0 |c_#StackHeapBarrier|)) (.cse10 (<= 2 c_~counter~0)) (.cse11 (<= c_~counter~0 101))) (and .cse0 .cse1 (<= 0 |c_#NULL.base|) .cse2 .cse3 (<= 0 |c_#NULL.offset|) (let ((.cse4 (= |c_#NULL.offset| 0)) (.cse5 (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse6 (= |c_#NULL.base| 0)) (.cse7 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse8 (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0)))) (or (and .cse0 .cse1 (= |c_ULTIMATE.start_main_~p~0#1| 0) .cse4 .cse5 .cse6 .cse2 .cse7 .cse8 .cse3 .cse9 .cse10 .cse11) (and .cse0 .cse1 .cse4 .cse5 .cse6 .cse2 .cse7 .cse8 .cse3 .cse9 .cse10 .cse11))) .cse9 (<= |c_#NULL.base| 0) (<= |c_#NULL.offset| 0) .cse10 .cse11)) is different from false [2022-11-25 22:42:36,791 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse1 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse2 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse9 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse10 (<= 0 |c_#StackHeapBarrier|)) (.cse11 (<= 2 c_~counter~0)) (.cse12 (<= c_~counter~0 101))) (and .cse0 .cse1 (<= 0 |c_#NULL.base|) .cse2 (let ((.cse3 (= |c_#NULL.offset| 0)) (.cse4 (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse5 (= |c_#NULL.base| 0)) (.cse6 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse7 (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0))) (.cse8 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)))) (or (and .cse0 .cse1 .cse3 .cse4 .cse5 .cse2 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 (= |c_ULTIMATE.start_main_~p~0#1| 0) .cse3 .cse4 .cse5 .cse2 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) .cse9 (<= 0 |c_#NULL.offset|) .cse10 (<= |c_#NULL.base| 0) (<= |c_#NULL.offset| 0) .cse11 .cse12)) is different from false [2022-11-25 22:42:38,864 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse1 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse2 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse3 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse4 (<= 0 |c_#StackHeapBarrier|)) (.cse5 (<= 2 c_~counter~0)) (.cse6 (<= c_~counter~0 101))) (and .cse0 .cse1 (<= 0 |c_#NULL.base|) .cse2 .cse3 (<= 0 |c_#NULL.offset|) .cse4 (<= |c_#NULL.base| 0) (<= |c_#NULL.offset| 0) .cse5 .cse6 (let ((.cse7 (= |c_#NULL.offset| 0)) (.cse8 (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse9 (= |c_#NULL.base| 0)) (.cse10 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse11 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0))) (.cse12 (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0))) (.cse13 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)))) (or (and .cse0 .cse1 .cse7 .cse8 .cse9 .cse2 .cse10 .cse11 .cse12 .cse13 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 (= |c_ULTIMATE.start_main_~p~0#1| 0) .cse7 .cse8 .cse9 .cse2 .cse10 .cse11 .cse12 .cse13 .cse3 .cse4 .cse5 .cse6))))) is different from false [2022-11-25 22:43:52,022 WARN L233 SmtUtils]: Spent 56.04s on a formula simplification. DAG size of input: 107 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:43:52,026 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4469#(and (<= 2 ~counter~0) (<= ~counter~0 101) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:43:52,026 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:43:52,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:43:52,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-25 22:43:52,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732951520] [2022-11-25 22:43:52,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:43:52,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 22:43:52,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:43:52,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 22:43:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=548, Unknown=21, NotChecked=204, Total=870 [2022-11-25 22:43:52,028 INFO L87 Difference]: Start difference. First operand 247 states and 314 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 12 states have internal predecessors, (32), 4 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-25 22:43:54,067 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (div (mod |c_ULTIMATE.start_main_~p~0#1| 4294967296) 2)) (.cse0 (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296)) (.cse13 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse1 (<= .cse0 .cse13)) (.cse4 (* .cse7 .cse7)) (.cse8 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (and (or (= .cse0 1) .cse1 (let ((.cse6 (div .cse0 4))) (let ((.cse5 (<= (mod (+ .cse6 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) .cse8)) (.cse3 (* .cse6 |c_ULTIMATE.start_main_~r~0#1|)) (.cse2 (mod (* |c_ULTIMATE.start_main_~n~0#1| .cse6) 4294967296))) (and (or (= .cse2 (mod (+ .cse3 .cse4) 4294967296)) .cse5) (or (not .cse5) (= (mod (+ .cse3 .cse4 (* .cse6 |c_ULTIMATE.start_main_~p~0#1| 4294967295) (* .cse6 2 .cse7)) 4294967296) .cse2)))))) (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) (let ((.cse12 (mod |c_ULTIMATE.start_main_~q~0#1| 1073741824))) (or (not .cse1) (let ((.cse9 (<= (mod (+ .cse12 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) .cse8)) (.cse10 (mod (* |c_ULTIMATE.start_main_~n~0#1| .cse12) 4294967296)) (.cse11 (* .cse12 |c_ULTIMATE.start_main_~r~0#1|))) (and (or (not .cse9) (= .cse10 (mod (+ .cse11 .cse4 (* .cse12 2 .cse7) (* .cse12 |c_ULTIMATE.start_main_~p~0#1| 4294967295)) 4294967296))) (or .cse9 (= .cse10 (mod (+ .cse11 .cse4) 4294967296))))) (<= (* .cse12 4) .cse13)))))) is different from false [2022-11-25 22:43:56,072 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse7 (div (mod |c_ULTIMATE.start_main_~p~0#1| 4294967296) 2)) (.cse0 (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296)) (.cse13 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse1 (<= .cse0 .cse13)) (.cse4 (* .cse7 .cse7)) (.cse8 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (and (or (= .cse0 1) .cse1 (let ((.cse6 (div .cse0 4))) (let ((.cse5 (<= (mod (+ .cse6 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) .cse8)) (.cse3 (* .cse6 |c_ULTIMATE.start_main_~r~0#1|)) (.cse2 (mod (* |c_ULTIMATE.start_main_~n~0#1| .cse6) 4294967296))) (and (or (= .cse2 (mod (+ .cse3 .cse4) 4294967296)) .cse5) (or (not .cse5) (= (mod (+ .cse3 .cse4 (* .cse6 |c_ULTIMATE.start_main_~p~0#1| 4294967295) (* .cse6 2 .cse7)) 4294967296) .cse2)))))) (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) (let ((.cse12 (mod |c_ULTIMATE.start_main_~q~0#1| 1073741824))) (or (not .cse1) (let ((.cse9 (<= (mod (+ .cse12 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) .cse8)) (.cse10 (mod (* |c_ULTIMATE.start_main_~n~0#1| .cse12) 4294967296)) (.cse11 (* .cse12 |c_ULTIMATE.start_main_~r~0#1|))) (and (or (not .cse9) (= .cse10 (mod (+ .cse11 .cse4 (* .cse12 2 .cse7) (* .cse12 |c_ULTIMATE.start_main_~p~0#1| 4294967295)) 4294967296))) (or .cse9 (= .cse10 (mod (+ .cse11 .cse4) 4294967296))))) (<= (* .cse12 4) .cse13)))))) is different from true [2022-11-25 22:43:58,080 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (div (mod |c_ULTIMATE.start_main_~p~0#1| 4294967296) 2)) (.cse0 (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296)) (.cse13 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse1 (<= .cse0 .cse13)) (.cse4 (* .cse7 .cse7)) (.cse8 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (and (or (= .cse0 1) .cse1 (let ((.cse6 (div .cse0 4))) (let ((.cse5 (<= (mod (+ .cse6 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) .cse8)) (.cse3 (* .cse6 |c_ULTIMATE.start_main_~r~0#1|)) (.cse2 (mod (* |c_ULTIMATE.start_main_~n~0#1| .cse6) 4294967296))) (and (or (= .cse2 (mod (+ .cse3 .cse4) 4294967296)) .cse5) (or (not .cse5) (= (mod (+ .cse3 .cse4 (* .cse6 |c_ULTIMATE.start_main_~p~0#1| 4294967295) (* .cse6 2 .cse7)) 4294967296) .cse2)))))) (let ((.cse12 (mod |c_ULTIMATE.start_main_~q~0#1| 1073741824))) (or (not .cse1) (let ((.cse9 (<= (mod (+ .cse12 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) .cse8)) (.cse10 (mod (* |c_ULTIMATE.start_main_~n~0#1| .cse12) 4294967296)) (.cse11 (* .cse12 |c_ULTIMATE.start_main_~r~0#1|))) (and (or (not .cse9) (= .cse10 (mod (+ .cse11 .cse4 (* .cse12 2 .cse7) (* .cse12 |c_ULTIMATE.start_main_~p~0#1| 4294967295)) 4294967296))) (or .cse9 (= .cse10 (mod (+ .cse11 .cse4) 4294967296))))) (<= (* .cse12 4) .cse13)))))) is different from false [2022-11-25 22:43:59,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:44:04,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:19,158 WARN L233 SmtUtils]: Spent 54.34s on a formula simplification. DAG size of input: 63 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:45:21,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:24,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:25,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:27,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:31,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:33,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:35,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:37,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:40,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:42,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:44,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:45,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:48,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:52,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:55,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:57,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:45:59,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:46:01,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:46:03,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:46:05,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:46:09,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-25 22:46:12,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []