./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9 --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 ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 --- 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-6b4ec56 [2022-11-20 20:28:34,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:28:34,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:28:34,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:28:34,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:28:34,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:28:34,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:28:34,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:28:34,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:28:34,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:28:34,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:28:34,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:28:34,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:28:34,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:28:34,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:28:34,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:28:34,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:28:34,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:28:34,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:28:34,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:28:34,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:28:34,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:28:34,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:28:34,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:28:34,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:28:34,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:28:34,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:28:34,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:28:34,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:28:34,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:28:34,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:28:34,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:28:34,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:28:34,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:28:34,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:28:34,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:28:34,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:28:34,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:28:34,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:28:34,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:28:34,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:28:34,513 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:28:34,536 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:28:34,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:28:34,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:28:34,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:28:34,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:28:34,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:28:34,546 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:28:34,546 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:28:34,547 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:28:34,547 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:28:34,548 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:28:34,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:28:34,549 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:28:34,549 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:28:34,549 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:28:34,550 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:28:34,550 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:28:34,550 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:28:34,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:28:34,551 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:28:34,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:28:34,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:28:34,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:28:34,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:28:34,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:28:34,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:28:34,554 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:28:34,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:28:34,555 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:28:34,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:28:34,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:28:34,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:28:34,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:28:34,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:28:34,557 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:28:34,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:28:34,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:28:34,558 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:28:34,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:28:34,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:28:34,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:28:34,559 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_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 [2022-11-20 20:28:34,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:28:34,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:28:34,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:28:34,911 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:28:34,911 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:28:34,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-11-20 20:28:38,083 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:28:38,293 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:28:38,293 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-11-20 20:28:38,300 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/data/65237defd/f28f8dbfb9e54dae9e963b4d3819f235/FLAGd1fe7aa50 [2022-11-20 20:28:38,316 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/data/65237defd/f28f8dbfb9e54dae9e963b4d3819f235 [2022-11-20 20:28:38,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:28:38,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:28:38,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:28:38,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:28:38,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:28:38,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c9ec0c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38, skipping insertion in model container [2022-11-20 20:28:38,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:28:38,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:28:38,547 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_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2022-11-20 20:28:38,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:28:38,593 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:28:38,613 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_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2022-11-20 20:28:38,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:28:38,652 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:28:38,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38 WrapperNode [2022-11-20 20:28:38,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:28:38,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:28:38,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:28:38,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:28:38,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,691 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2022-11-20 20:28:38,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:28:38,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:28:38,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:28:38,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:28:38,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,715 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:28:38,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:28:38,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:28:38,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:28:38,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38" (1/1) ... [2022-11-20 20:28:38,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:28:38,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:28:38,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:28:38,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:28:38,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:28:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 20:28:38,805 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 20:28:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:28:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:28:38,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:28:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 20:28:38,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 20:28:38,875 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:28:38,877 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:28:39,136 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:28:39,201 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:28:39,201 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 20:28:39,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:28:39 BoogieIcfgContainer [2022-11-20 20:28:39,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:28:39,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:28:39,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:28:39,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:28:39,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:28:38" (1/3) ... [2022-11-20 20:28:39,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb97f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:28:39, skipping insertion in model container [2022-11-20 20:28:39,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:28:38" (2/3) ... [2022-11-20 20:28:39,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb97f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:28:39, skipping insertion in model container [2022-11-20 20:28:39,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:28:39" (3/3) ... [2022-11-20 20:28:39,260 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2022-11-20 20:28:39,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:28:39,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:28:39,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:28:39,388 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;@54fb03be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:28:39,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:28:39,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 16 states have internal predecessors, (20), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 20:28:39,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 20:28:39,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:28:39,407 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:28:39,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:28:39,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:28:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash 966807424, now seen corresponding path program 1 times [2022-11-20 20:28:39,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:28:39,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34107639] [2022-11-20 20:28:39,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:39,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:28:39,602 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:28:39,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527213657] [2022-11-20 20:28:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:39,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:28:39,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:28:39,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:28:39,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:28:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:28:39,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 20:28:39,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:28:39,793 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 20:28:39,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:28:39,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:28:39,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34107639] [2022-11-20 20:28:39,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:28:39,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527213657] [2022-11-20 20:28:39,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527213657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:28:39,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:28:39,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:28:39,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353248220] [2022-11-20 20:28:39,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:28:39,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:28:39,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:28:39,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:28:39,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:28:39,863 INFO L87 Difference]: Start difference. First operand has 30 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 16 states have internal predecessors, (20), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 20:28:39,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:28:39,925 INFO L93 Difference]: Finished difference Result 49 states and 78 transitions. [2022-11-20 20:28:39,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:28:39,929 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2022-11-20 20:28:39,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:28:39,939 INFO L225 Difference]: With dead ends: 49 [2022-11-20 20:28:39,939 INFO L226 Difference]: Without dead ends: 28 [2022-11-20 20:28:39,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:28:39,950 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:28:39,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:28:39,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-20 20:28:39,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-20 20:28:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 20:28:40,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2022-11-20 20:28:40,002 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 26 [2022-11-20 20:28:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:28:40,004 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2022-11-20 20:28:40,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 20:28:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2022-11-20 20:28:40,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 20:28:40,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:28:40,006 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:28:40,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:28:40,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 20:28:40,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:28:40,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:28:40,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1643993843, now seen corresponding path program 1 times [2022-11-20 20:28:40,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:28:40,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103297369] [2022-11-20 20:28:40,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:40,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:28:40,263 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:28:40,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777554584] [2022-11-20 20:28:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:40,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:28:40,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:28:40,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:28:40,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:28:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:28:40,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 20:28:40,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:28:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 20:28:40,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:28:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 20:28:40,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:28:40,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103297369] [2022-11-20 20:28:40,582 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:28:40,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777554584] [2022-11-20 20:28:40,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777554584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:28:40,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1945342290] [2022-11-20 20:28:40,605 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-20 20:28:40,605 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:28:40,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:28:40,616 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:28:40,617 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:28:41,662 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-20 20:28:41,686 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:28:42,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1945342290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:28:42,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:28:42,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 5] total 14 [2022-11-20 20:28:42,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834822153] [2022-11-20 20:28:42,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:28:42,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:28:42,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:28:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:28:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:28:42,750 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand has 11 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 20:28:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:28:43,020 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-11-20 20:28:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 20:28:43,021 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2022-11-20 20:28:43,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:28:43,022 INFO L225 Difference]: With dead ends: 38 [2022-11-20 20:28:43,023 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 20:28:43,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:28:43,024 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 48 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:28:43,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 48 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:28:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 20:28:43,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-20 20:28:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 20:28:43,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2022-11-20 20:28:43,044 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 27 [2022-11-20 20:28:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:28:43,045 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2022-11-20 20:28:43,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-20 20:28:43,045 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2022-11-20 20:28:43,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 20:28:43,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:28:43,046 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:28:43,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:28:43,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:28:43,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:28:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:28:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash -575116102, now seen corresponding path program 1 times [2022-11-20 20:28:43,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:28:43,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475168233] [2022-11-20 20:28:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:43,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:28:43,278 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:28:43,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272218143] [2022-11-20 20:28:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:43,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:28:43,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:28:43,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:28:43,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:28:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:28:43,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 20:28:43,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:28:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 20:28:43,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:28:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 20:28:43,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:28:43,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475168233] [2022-11-20 20:28:43,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:28:43,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272218143] [2022-11-20 20:28:43,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272218143] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 20:28:43,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:28:43,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-20 20:28:43,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682677609] [2022-11-20 20:28:43,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:28:43,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:28:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:28:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:28:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:28:43,544 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 20:28:43,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:28:43,648 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-11-20 20:28:43,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:28:43,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 28 [2022-11-20 20:28:43,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:28:43,650 INFO L225 Difference]: With dead ends: 36 [2022-11-20 20:28:43,650 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 20:28:43,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 20:28:43,652 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:28:43,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 101 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:28:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 20:28:43,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-20 20:28:43,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 20:28:43,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-11-20 20:28:43,674 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 28 [2022-11-20 20:28:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:28:43,674 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-11-20 20:28:43,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 20:28:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-11-20 20:28:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 20:28:43,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:28:43,677 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:28:43,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 20:28:43,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:28:43,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:28:43,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:28:43,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1810277145, now seen corresponding path program 1 times [2022-11-20 20:28:43,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:28:43,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533114224] [2022-11-20 20:28:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:43,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:28:43,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:28:43,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698775796] [2022-11-20 20:28:43,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:43,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:28:43,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:28:43,917 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:28:43,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:28:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:28:43,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 20:28:44,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:28:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:28:44,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:28:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-20 20:28:44,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:28:44,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533114224] [2022-11-20 20:28:44,491 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:28:44,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698775796] [2022-11-20 20:28:44,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698775796] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 20:28:44,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:28:44,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2022-11-20 20:28:44,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416058921] [2022-11-20 20:28:44,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:28:44,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:28:44,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:28:44,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:28:44,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:28:44,494 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:28:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:28:44,589 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2022-11-20 20:28:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:28:44,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 33 [2022-11-20 20:28:44,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:28:44,591 INFO L225 Difference]: With dead ends: 47 [2022-11-20 20:28:44,591 INFO L226 Difference]: Without dead ends: 45 [2022-11-20 20:28:44,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:28:44,593 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:28:44,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:28:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-20 20:28:44,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2022-11-20 20:28:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 20:28:44,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2022-11-20 20:28:44,619 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 33 [2022-11-20 20:28:44,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:28:44,620 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2022-11-20 20:28:44,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 20:28:44,620 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2022-11-20 20:28:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 20:28:44,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:28:44,622 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:28:44,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:28:44,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 20:28:44,828 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:28:44,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:28:44,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1313498982, now seen corresponding path program 1 times [2022-11-20 20:28:44,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:28:44,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422821874] [2022-11-20 20:28:44,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:44,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:28:44,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:28:44,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214082172] [2022-11-20 20:28:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:44,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:28:44,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:28:44,846 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:28:44,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:28:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:28:44,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 20:28:44,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:28:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:28:45,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:28:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 20:28:45,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:28:45,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422821874] [2022-11-20 20:28:45,491 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:28:45,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214082172] [2022-11-20 20:28:45,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214082172] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 20:28:45,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:28:45,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 15 [2022-11-20 20:28:45,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612756676] [2022-11-20 20:28:45,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:28:45,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 20:28:45,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:28:45,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 20:28:45,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-20 20:28:45,494 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 20:28:45,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:28:45,627 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2022-11-20 20:28:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:28:45,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 38 [2022-11-20 20:28:45,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:28:45,629 INFO L225 Difference]: With dead ends: 51 [2022-11-20 20:28:45,629 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 20:28:45,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-20 20:28:45,630 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:28:45,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 128 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:28:45,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 20:28:45,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2022-11-20 20:28:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 20:28:45,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2022-11-20 20:28:45,655 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 38 [2022-11-20 20:28:45,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:28:45,655 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2022-11-20 20:28:45,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 20:28:45,656 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2022-11-20 20:28:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 20:28:45,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:28:45,657 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:28:45,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 20:28:45,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:28:45,863 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:28:45,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:28:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1793667961, now seen corresponding path program 1 times [2022-11-20 20:28:45,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:28:45,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406293748] [2022-11-20 20:28:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:45,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:28:45,879 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:28:45,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558013696] [2022-11-20 20:28:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:45,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:28:45,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:28:45,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:28:45,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 20:28:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:28:45,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 20:28:45,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:28:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 20:28:46,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:28:46,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:28:46,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406293748] [2022-11-20 20:28:46,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:28:46,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558013696] [2022-11-20 20:28:46,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558013696] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:28:46,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1297669322] [2022-11-20 20:28:46,420 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-20 20:28:46,420 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:28:46,421 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:28:46,423 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:28:46,423 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:28:47,587 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-20 20:28:47,599 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-20 20:28:47,619 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:28:49,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1297669322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:28:49,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:28:49,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 22 [2022-11-20 20:28:49,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462286901] [2022-11-20 20:28:49,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:28:49,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:28:49,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:28:49,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:28:49,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-11-20 20:28:49,776 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-20 20:28:50,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:28:50,178 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2022-11-20 20:28:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:28:50,179 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2022-11-20 20:28:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:28:50,180 INFO L225 Difference]: With dead ends: 73 [2022-11-20 20:28:50,181 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 20:28:50,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-11-20 20:28:50,183 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:28:50,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 50 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:28:50,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 20:28:50,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2022-11-20 20:28:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 41 states have internal predecessors, (43), 20 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-20 20:28:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2022-11-20 20:28:50,217 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 43 [2022-11-20 20:28:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:28:50,218 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2022-11-20 20:28:50,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-20 20:28:50,218 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2022-11-20 20:28:50,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 20:28:50,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:28:50,220 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:28:50,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 20:28:50,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 20:28:50,425 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:28:50,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:28:50,426 INFO L85 PathProgramCache]: Analyzing trace with hash 434944611, now seen corresponding path program 1 times [2022-11-20 20:28:50,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:28:50,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270371913] [2022-11-20 20:28:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:50,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:28:50,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:28:50,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477021003] [2022-11-20 20:28:50,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:28:50,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:28:50,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:28:50,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:28:50,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 20:28:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:28:50,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:28:50,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:28:50,617 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-20 20:28:50,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:28:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-20 20:28:50,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:28:50,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270371913] [2022-11-20 20:28:50,741 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:28:50,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477021003] [2022-11-20 20:28:50,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477021003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:28:50,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [267942397] [2022-11-20 20:28:50,744 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-20 20:28:50,744 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:28:50,744 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:28:50,745 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:28:50,759 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:29:04,195 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-20 20:29:04,200 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-20 20:29:04,220 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:29:08,146 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2210#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:29:08,146 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:29:08,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:29:08,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-11-20 20:29:08,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472759536] [2022-11-20 20:29:08,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 20:29:08,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:29:08,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:29:08,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:29:08,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2022-11-20 20:29:08,149 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 20:29:08,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:29:08,468 INFO L93 Difference]: Finished difference Result 111 states and 148 transitions. [2022-11-20 20:29:08,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:29:08,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 52 [2022-11-20 20:29:08,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:29:08,470 INFO L225 Difference]: With dead ends: 111 [2022-11-20 20:29:08,471 INFO L226 Difference]: Without dead ends: 103 [2022-11-20 20:29:08,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 123 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-11-20 20:29:08,472 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 34 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:29:08,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 177 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:29:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-20 20:29:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2022-11-20 20:29:08,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 53 states have internal predecessors, (61), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-20 20:29:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2022-11-20 20:29:08,509 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 124 transitions. Word has length 52 [2022-11-20 20:29:08,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:29:08,510 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 124 transitions. [2022-11-20 20:29:08,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 20:29:08,510 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 124 transitions. [2022-11-20 20:29:08,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 20:29:08,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:29:08,512 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:29:08,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 20:29:08,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:29:08,718 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:29:08,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:29:08,719 INFO L85 PathProgramCache]: Analyzing trace with hash -243308457, now seen corresponding path program 1 times [2022-11-20 20:29:08,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:29:08,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375578638] [2022-11-20 20:29:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:29:08,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:29:08,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:29:08,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8409787] [2022-11-20 20:29:08,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:29:08,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:29:08,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:29:08,732 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:29:08,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 20:29:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:29:08,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 20:29:08,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:29:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 20:29:08,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:29:09,093 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 20:29:09,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:29:09,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375578638] [2022-11-20 20:29:09,094 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:29:09,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8409787] [2022-11-20 20:29:09,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8409787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:29:09,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1841470321] [2022-11-20 20:29:09,100 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-20 20:29:09,100 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:29:09,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:29:09,101 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:29:09,101 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:29:19,803 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-20 20:29:19,811 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-20 20:29:19,822 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:29:24,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1841470321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:29:24,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:29:24,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [9, 7] total 28 [2022-11-20 20:29:24,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828502442] [2022-11-20 20:29:24,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:29:24,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 20:29:24,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:29:24,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 20:29:24,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2022-11-20 20:29:24,158 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 17 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-20 20:29:25,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:29:25,574 INFO L93 Difference]: Finished difference Result 113 states and 146 transitions. [2022-11-20 20:29:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 20:29:25,575 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) Word has length 58 [2022-11-20 20:29:25,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:29:25,582 INFO L225 Difference]: With dead ends: 113 [2022-11-20 20:29:25,583 INFO L226 Difference]: Without dead ends: 111 [2022-11-20 20:29:25,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 130 SyntacticMatches, 16 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2022-11-20 20:29:25,586 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 35 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:29:25,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 53 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:29:25,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-20 20:29:25,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-20 20:29:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 64 states have internal predecessors, (73), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-20 20:29:25,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2022-11-20 20:29:25,659 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 58 [2022-11-20 20:29:25,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:29:25,661 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2022-11-20 20:29:25,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-20 20:29:25,661 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2022-11-20 20:29:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 20:29:25,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:29:25,672 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:29:25,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 20:29:25,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:29:25,879 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:29:25,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:29:25,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1984692712, now seen corresponding path program 1 times [2022-11-20 20:29:25,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:29:25,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875951007] [2022-11-20 20:29:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:29:25,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:29:25,903 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:29:25,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265225430] [2022-11-20 20:29:25,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:29:25,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:29:25,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:29:25,908 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:29:25,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 20:29:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:29:25,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 20:29:25,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:29:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-20 20:29:26,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:29:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-20 20:29:26,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:29:26,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875951007] [2022-11-20 20:29:26,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:29:26,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265225430] [2022-11-20 20:29:26,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265225430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:29:26,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1934043162] [2022-11-20 20:29:26,229 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-20 20:29:26,230 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:29:26,230 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:29:26,230 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:29:26,231 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:29:31,233 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-20 20:29:31,289 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-20 20:29:31,303 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:29:38,115 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3663#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:29:38,116 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:29:38,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:29:38,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2022-11-20 20:29:38,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821768795] [2022-11-20 20:29:38,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 20:29:38,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:29:38,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:29:38,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:29:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2022-11-20 20:29:38,119 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:29:38,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:29:38,444 INFO L93 Difference]: Finished difference Result 122 states and 158 transitions. [2022-11-20 20:29:38,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:29:38,445 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-11-20 20:29:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:29:38,450 INFO L225 Difference]: With dead ends: 122 [2022-11-20 20:29:38,450 INFO L226 Difference]: Without dead ends: 120 [2022-11-20 20:29:38,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 157 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-11-20 20:29:38,452 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:29:38,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 103 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:29:38,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-20 20:29:38,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-11-20 20:29:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 69 states have internal predecessors, (77), 40 states have call successors, (40), 12 states have call predecessors, (40), 12 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-20 20:29:38,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 156 transitions. [2022-11-20 20:29:38,498 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 156 transitions. Word has length 65 [2022-11-20 20:29:38,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:29:38,499 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 156 transitions. [2022-11-20 20:29:38,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:29:38,500 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 156 transitions. [2022-11-20 20:29:38,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 20:29:38,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:29:38,501 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:29:38,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 20:29:38,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 20:29:38,708 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:29:38,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:29:38,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2003369438, now seen corresponding path program 1 times [2022-11-20 20:29:38,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:29:38,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595033878] [2022-11-20 20:29:38,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:29:38,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:29:38,721 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:29:38,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477308831] [2022-11-20 20:29:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:29:38,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:29:38,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:29:38,724 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:29:38,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 20:29:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:29:38,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 20:29:38,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:29:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-20 20:29:39,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:29:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-20 20:29:40,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:29:40,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595033878] [2022-11-20 20:29:40,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:29:40,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477308831] [2022-11-20 20:29:40,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477308831] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:29:40,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1826935007] [2022-11-20 20:29:40,349 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-20 20:29:40,349 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:29:40,350 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:29:40,350 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:29:40,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:29:45,291 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-20 20:29:45,296 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-20 20:29:45,309 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:30:06,442 WARN L233 SmtUtils]: Spent 13.60s on a formula simplification. DAG size of input: 83 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:30:19,758 WARN L233 SmtUtils]: Spent 11.00s on a formula simplification. DAG size of input: 85 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:30:20,223 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4516#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:30:20,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:30:20,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:30:20,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2022-11-20 20:30:20,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250011360] [2022-11-20 20:30:20,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 20:30:20,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 20:30:20,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:30:20,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 20:30:20,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1434, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 20:30:20,227 INFO L87 Difference]: Start difference. First operand 120 states and 156 transitions. Second operand has 21 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-20 20:30:33,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:30:33,921 INFO L93 Difference]: Finished difference Result 199 states and 279 transitions. [2022-11-20 20:30:33,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 20:30:33,922 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 74 [2022-11-20 20:30:33,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:30:33,924 INFO L225 Difference]: With dead ends: 199 [2022-11-20 20:30:33,924 INFO L226 Difference]: Without dead ends: 197 [2022-11-20 20:30:33,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 169 SyntacticMatches, 12 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1505 ImplicationChecksByTransitivity, 42.6s TimeCoverageRelationStatistics Valid=490, Invalid=3292, Unknown=0, NotChecked=0, Total=3782 [2022-11-20 20:30:33,927 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 127 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:30:33,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 332 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-20 20:30:33,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-20 20:30:34,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2022-11-20 20:30:34,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 101 states have internal predecessors, (121), 73 states have call successors, (73), 14 states have call predecessors, (73), 14 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-20 20:30:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 266 transitions. [2022-11-20 20:30:34,005 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 266 transitions. Word has length 74 [2022-11-20 20:30:34,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:30:34,006 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 266 transitions. [2022-11-20 20:30:34,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-20 20:30:34,006 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 266 transitions. [2022-11-20 20:30:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 20:30:34,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:30:34,008 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:30:34,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 20:30:34,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 20:30:34,208 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:30:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:30:34,209 INFO L85 PathProgramCache]: Analyzing trace with hash -134461569, now seen corresponding path program 1 times [2022-11-20 20:30:34,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:30:34,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973291720] [2022-11-20 20:30:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:30:34,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:30:34,222 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:30:34,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220364987] [2022-11-20 20:30:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:30:34,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:30:34,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:30:34,225 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:30:34,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 20:30:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:30:34,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 20:30:34,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:30:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 20:30:34,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:30:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-20 20:30:35,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:30:35,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973291720] [2022-11-20 20:30:35,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:30:35,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220364987] [2022-11-20 20:30:35,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220364987] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:30:35,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [37471160] [2022-11-20 20:30:35,102 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-20 20:30:35,103 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:30:35,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:30:35,103 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:30:35,104 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:30:39,948 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-20 20:30:39,951 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-20 20:30:39,964 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:31:01,022 WARN L233 SmtUtils]: Spent 14.37s on a formula simplification. DAG size of input: 83 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:31:18,396 WARN L233 SmtUtils]: Spent 16.05s on a formula simplification. DAG size of input: 85 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:31:19,466 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5677#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:31:19,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:31:19,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:31:19,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 19 [2022-11-20 20:31:19,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137325819] [2022-11-20 20:31:19,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 20:31:19,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 20:31:19,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:31:19,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 20:31:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1366, Unknown=1, NotChecked=0, Total=1560 [2022-11-20 20:31:19,469 INFO L87 Difference]: Start difference. First operand 187 states and 266 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2022-11-20 20:31:24,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:31:24,762 INFO L93 Difference]: Finished difference Result 231 states and 326 transitions. [2022-11-20 20:31:24,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 20:31:24,763 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) Word has length 79 [2022-11-20 20:31:24,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:31:24,765 INFO L225 Difference]: With dead ends: 231 [2022-11-20 20:31:24,766 INFO L226 Difference]: Without dead ends: 225 [2022-11-20 20:31:24,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 199 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=329, Invalid=2322, Unknown=1, NotChecked=0, Total=2652 [2022-11-20 20:31:24,768 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 72 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:31:24,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 137 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 20:31:24,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-20 20:31:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 197. [2022-11-20 20:31:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 108 states have (on average 1.1759259259259258) internal successors, (127), 109 states have internal predecessors, (127), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-20 20:31:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 268 transitions. [2022-11-20 20:31:24,871 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 268 transitions. Word has length 79 [2022-11-20 20:31:24,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:31:24,871 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 268 transitions. [2022-11-20 20:31:24,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2022-11-20 20:31:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 268 transitions. [2022-11-20 20:31:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-20 20:31:24,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:31:24,873 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:31:24,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 20:31:25,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:31:25,080 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:31:25,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:31:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash 145896886, now seen corresponding path program 1 times [2022-11-20 20:31:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:31:25,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896629305] [2022-11-20 20:31:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:31:25,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:31:25,093 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:31:25,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476684250] [2022-11-20 20:31:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:31:25,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:31:25,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:31:25,101 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:31:25,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 20:31:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:31:25,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 20:31:25,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:31:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 122 proven. 13 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-20 20:31:25,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:31:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-20 20:31:25,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:31:25,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896629305] [2022-11-20 20:31:25,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:31:25,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476684250] [2022-11-20 20:31:25,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476684250] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:31:25,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1685698039] [2022-11-20 20:31:25,490 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-20 20:31:25,490 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:31:25,491 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:31:25,491 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:31:25,491 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:31:30,152 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-20 20:31:30,156 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-20 20:31:30,172 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:31:44,936 WARN L233 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 77 DAG size of output: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:31:54,974 WARN L233 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 79 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:31:54,977 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6947#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:31:54,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:31:54,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:31:54,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2022-11-20 20:31:54,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598350980] [2022-11-20 20:31:54,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 20:31:54,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 20:31:54,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:31:54,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 20:31:54,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2022-11-20 20:31:54,979 INFO L87 Difference]: Start difference. First operand 197 states and 268 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-20 20:31:55,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:31:55,556 INFO L93 Difference]: Finished difference Result 248 states and 331 transitions. [2022-11-20 20:31:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 20:31:55,557 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 90 [2022-11-20 20:31:55,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:31:55,559 INFO L225 Difference]: With dead ends: 248 [2022-11-20 20:31:55,559 INFO L226 Difference]: Without dead ends: 173 [2022-11-20 20:31:55,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 236 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=257, Invalid=1383, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 20:31:55,561 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 66 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:31:55,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 195 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:31:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-20 20:31:55,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2022-11-20 20:31:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 93 states have (on average 1.1505376344086022) internal successors, (107), 94 states have internal predecessors, (107), 59 states have call successors, (59), 15 states have call predecessors, (59), 15 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-20 20:31:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 224 transitions. [2022-11-20 20:31:55,646 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 224 transitions. Word has length 90 [2022-11-20 20:31:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:31:55,647 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 224 transitions. [2022-11-20 20:31:55,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-20 20:31:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 224 transitions. [2022-11-20 20:31:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-20 20:31:55,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:31:55,649 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:31:55,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 20:31:55,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:31:55,849 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:31:55,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:31:55,850 INFO L85 PathProgramCache]: Analyzing trace with hash -743497349, now seen corresponding path program 2 times [2022-11-20 20:31:55,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:31:55,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097812567] [2022-11-20 20:31:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:31:55,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:31:55,862 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:31:55,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441556734] [2022-11-20 20:31:55,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:31:55,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:31:55,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:31:55,864 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:31:55,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 20:31:55,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 20:31:55,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:31:55,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 20:31:55,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:31:56,101 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 152 proven. 10 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-20 20:31:56,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:31:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2022-11-20 20:31:56,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:31:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097812567] [2022-11-20 20:31:56,268 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:31:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441556734] [2022-11-20 20:31:56,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441556734] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:31:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1376746379] [2022-11-20 20:31:56,270 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-20 20:31:56,271 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:31:56,271 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:31:56,271 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:31:56,272 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:31:58,973 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-20 20:31:59,008 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-20 20:31:59,021 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:32:26,618 WARN L233 SmtUtils]: Spent 23.12s on a formula simplification. DAG size of input: 175 DAG size of output: 142 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:32:34,604 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:32:42,985 WARN L233 SmtUtils]: Spent 7.66s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:32:43,261 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8302#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:32:43,261 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:32:43,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:32:43,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-20 20:32:43,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159024444] [2022-11-20 20:32:43,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 20:32:43,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:32:43,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:32:43,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:32:43,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 20:32:43,263 INFO L87 Difference]: Start difference. First operand 168 states and 224 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2022-11-20 20:32:43,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:32:43,850 INFO L93 Difference]: Finished difference Result 257 states and 344 transitions. [2022-11-20 20:32:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 20:32:43,851 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) Word has length 110 [2022-11-20 20:32:43,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:32:43,852 INFO L225 Difference]: With dead ends: 257 [2022-11-20 20:32:43,852 INFO L226 Difference]: Without dead ends: 160 [2022-11-20 20:32:43,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 280 SyntacticMatches, 17 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 44.5s TimeCoverageRelationStatistics Valid=252, Invalid=1554, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 20:32:43,854 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 41 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:32:43,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 186 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:32:43,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-20 20:32:43,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 134. [2022-11-20 20:32:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 75 states have (on average 1.08) internal successors, (81), 77 states have internal predecessors, (81), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-20 20:32:43,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 166 transitions. [2022-11-20 20:32:43,922 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 166 transitions. Word has length 110 [2022-11-20 20:32:43,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:32:43,923 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 166 transitions. [2022-11-20 20:32:43,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2022-11-20 20:32:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 166 transitions. [2022-11-20 20:32:43,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 20:32:43,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:32:43,925 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:32:43,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 20:32:44,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 20:32:44,126 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:32:44,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:32:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1538893617, now seen corresponding path program 2 times [2022-11-20 20:32:44,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:32:44,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814355844] [2022-11-20 20:32:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:32:44,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:32:44,135 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:32:44,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006380382] [2022-11-20 20:32:44,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:32:44,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:32:44,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:32:44,137 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:32:44,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 20:32:44,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 20:32:44,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:32:44,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-20 20:32:44,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:32:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 37 proven. 46 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2022-11-20 20:32:45,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:32:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-11-20 20:32:46,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:32:46,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814355844] [2022-11-20 20:32:46,450 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:32:46,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006380382] [2022-11-20 20:32:46,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006380382] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:32:46,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [885869447] [2022-11-20 20:32:46,453 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-20 20:32:46,453 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:32:46,454 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:32:46,454 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:32:46,454 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:32:50,752 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-20 20:32:50,756 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-20 20:32:50,770 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:33:07,821 WARN L233 SmtUtils]: Spent 7.48s on a formula simplification. DAG size of input: 83 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:33:17,420 WARN L233 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 85 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:33:20,776 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9692#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:33:20,776 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:33:20,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:33:20,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2022-11-20 20:33:20,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618089787] [2022-11-20 20:33:20,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 20:33:20,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 20:33:20,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:33:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 20:33:20,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1812, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 20:33:20,779 INFO L87 Difference]: Start difference. First operand 134 states and 166 transitions. Second operand has 26 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 14 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2022-11-20 20:33:31,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:33:31,792 INFO L93 Difference]: Finished difference Result 266 states and 355 transitions. [2022-11-20 20:33:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 20:33:31,792 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 14 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) Word has length 121 [2022-11-20 20:33:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:33:31,793 INFO L225 Difference]: With dead ends: 266 [2022-11-20 20:33:31,794 INFO L226 Difference]: Without dead ends: 217 [2022-11-20 20:33:31,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 295 SyntacticMatches, 22 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2763 ImplicationChecksByTransitivity, 35.9s TimeCoverageRelationStatistics Valid=835, Invalid=5171, Unknown=0, NotChecked=0, Total=6006 [2022-11-20 20:33:31,797 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 202 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:33:31,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 428 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-20 20:33:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-20 20:33:31,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 204. [2022-11-20 20:33:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 106 states have (on average 1.1037735849056605) internal successors, (117), 107 states have internal predecessors, (117), 79 states have call successors, (79), 18 states have call predecessors, (79), 18 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-20 20:33:31,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 274 transitions. [2022-11-20 20:33:31,924 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 274 transitions. Word has length 121 [2022-11-20 20:33:31,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:33:31,925 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 274 transitions. [2022-11-20 20:33:31,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 14 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2022-11-20 20:33:31,925 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 274 transitions. [2022-11-20 20:33:31,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 20:33:31,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:33:31,927 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:33:31,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-20 20:33:32,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 20:33:32,130 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:33:32,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:33:32,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1186822259, now seen corresponding path program 3 times [2022-11-20 20:33:32,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:33:32,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829918728] [2022-11-20 20:33:32,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:33:32,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:33:32,142 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:33:32,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004167817] [2022-11-20 20:33:32,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:33:32,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:33:32,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:33:32,144 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:33:32,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 20:33:32,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:33:32,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:33:32,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 20:33:32,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:33:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 178 proven. 41 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-20 20:33:32,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:33:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 54 proven. 41 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2022-11-20 20:33:32,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:33:32,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829918728] [2022-11-20 20:33:32,539 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:33:32,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004167817] [2022-11-20 20:33:32,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004167817] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:33:32,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1147132794] [2022-11-20 20:33:32,541 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-20 20:33:32,541 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:33:32,541 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:33:32,541 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:33:32,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:33:36,556 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-20 20:33:36,559 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-20 20:33:36,572 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:33:48,406 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 77 DAG size of output: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:33:57,676 WARN L233 SmtUtils]: Spent 7.58s on a formula simplification. DAG size of input: 79 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:33:57,764 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11298#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:33:57,764 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:33:57,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:33:57,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2022-11-20 20:33:57,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754041182] [2022-11-20 20:33:57,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 20:33:57,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 20:33:57,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:33:57,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 20:33:57,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2022-11-20 20:33:57,767 INFO L87 Difference]: Start difference. First operand 204 states and 274 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 12 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 11 states have call predecessors, (42), 12 states have call successors, (42) [2022-11-20 20:33:58,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:33:58,457 INFO L93 Difference]: Finished difference Result 247 states and 327 transitions. [2022-11-20 20:33:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 20:33:58,459 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 12 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 11 states have call predecessors, (42), 12 states have call successors, (42) Word has length 129 [2022-11-20 20:33:58,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:33:58,461 INFO L225 Difference]: With dead ends: 247 [2022-11-20 20:33:58,461 INFO L226 Difference]: Without dead ends: 168 [2022-11-20 20:33:58,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 328 SyntacticMatches, 27 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=226, Invalid=1414, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 20:33:58,463 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 56 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:33:58,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 231 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:33:58,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-20 20:33:58,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-11-20 20:33:58,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 89 states have (on average 1.0898876404494382) internal successors, (97), 90 states have internal predecessors, (97), 63 states have call successors, (63), 15 states have call predecessors, (63), 15 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-20 20:33:58,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 222 transitions. [2022-11-20 20:33:58,627 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 222 transitions. Word has length 129 [2022-11-20 20:33:58,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:33:58,627 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 222 transitions. [2022-11-20 20:33:58,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 12 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 11 states have call predecessors, (42), 12 states have call successors, (42) [2022-11-20 20:33:58,628 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 222 transitions. [2022-11-20 20:33:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-20 20:33:58,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:33:58,630 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:33:58,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 20:33:58,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:33:58,836 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:33:58,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:33:58,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1911860483, now seen corresponding path program 4 times [2022-11-20 20:33:58,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:33:58,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816430058] [2022-11-20 20:33:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:33:58,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:33:58,861 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:33:58,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718484831] [2022-11-20 20:33:58,871 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 20:33:58,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:33:58,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:33:58,873 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:33:58,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 20:33:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:33:58,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 20:33:58,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:33:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 232 proven. 60 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2022-11-20 20:33:59,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:33:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 70 proven. 66 refuted. 0 times theorem prover too weak. 949 trivial. 0 not checked. [2022-11-20 20:33:59,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:33:59,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816430058] [2022-11-20 20:33:59,366 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:33:59,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718484831] [2022-11-20 20:33:59,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718484831] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:33:59,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [561246093] [2022-11-20 20:33:59,374 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-20 20:33:59,375 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:33:59,375 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:33:59,375 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:33:59,375 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:34:03,639 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-20 20:34:03,642 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-20 20:34:03,655 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:34:19,783 WARN L233 SmtUtils]: Spent 10.62s on a formula simplification. DAG size of input: 83 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:34:43,540 WARN L233 SmtUtils]: Spent 22.42s on a formula simplification. DAG size of input: 85 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:34:44,065 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12921#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:34:44,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:34:44,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 20:34:44,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-11-20 20:34:44,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300570841] [2022-11-20 20:34:44,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 20:34:44,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:34:44,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:34:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:34:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 20:34:44,068 INFO L87 Difference]: Start difference. First operand 168 states and 222 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 12 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2022-11-20 20:34:44,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:34:44,716 INFO L93 Difference]: Finished difference Result 176 states and 228 transitions. [2022-11-20 20:34:44,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 20:34:44,717 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 12 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) Word has length 154 [2022-11-20 20:34:44,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:34:44,718 INFO L225 Difference]: With dead ends: 176 [2022-11-20 20:34:44,718 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:34:44,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 396 SyntacticMatches, 33 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=227, Invalid=1413, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 20:34:44,719 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 32 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 20:34:44,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 201 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 20:34:44,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:34:44,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:34:44,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:34:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:34:44,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2022-11-20 20:34:44,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:34:44,721 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:34:44,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 12 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2022-11-20 20:34:44,722 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:34:44,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:34:44,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:34:44,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 20:34:44,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 20:34:44,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:35:06,880 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse37 (select |#memory_int| 1)) (.cse36 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse2 (or (= (+ .cse4 .cse5) .cse8) (not (= |ULTIMATE.start_main_~c~0#1| 0)))) (.cse24 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse27 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse30 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse3 (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~b~0#1|) (+ .cse6 .cse7 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse31 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse29 (<= .cse36 2)) (.cse32 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse34 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse35 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse9 (= 11 (select |#length| 2))) (.cse10 (= 2 (select |#length| 1))) (.cse11 (= (+ .cse6 .cse7) |ULTIMATE.start_main_~b~0#1|)) (.cse12 (= (select |#valid| 3) 1)) (.cse13 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= (select |#valid| 1) 1)) (.cse16 (= (select |#valid| 0) 0)) (.cse17 (= (select |#valid| 2) 1)) (.cse18 (= |#NULL.offset| 0)) (.cse19 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (= (select .cse37 0) 48)) (.cse21 (= .cse8 |ULTIMATE.start_main_~a~0#1|)) (.cse22 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse23 (= (select .cse37 1) 0)) (.cse25 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse26 (< 0 |#StackHeapBarrier|)) (.cse28 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (or (= (+ .cse4 .cse5 .cse6 .cse7) .cse8) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 (= .cse27 |ULTIMATE.start_main_~x~0#1|) .cse28) (and .cse0 .cse1 .cse2 .cse3 .cse9 .cse10 .cse11 .cse12 .cse29 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse28) (and .cse0 .cse30 .cse3 (= .cse27 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse31 .cse12 .cse32 .cse33 .cse34 .cse15 .cse35 .cse16 .cse17 .cse18 .cse20 (<= .cse27 2) .cse23 .cse26 .cse28) (and .cse0 .cse30 .cse3 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse9 .cse10 .cse31 .cse12 .cse29 .cse32 .cse33 .cse34 .cse15 .cse35 (= .cse36 |ULTIMATE.start_main_~y~0#1|) .cse16 .cse17 .cse18 .cse20 .cse21 .cse23 (= 2 |ULTIMATE.start_main_~k~0#1|) .cse26 .cse28) (and .cse0 .cse1 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse9 .cse10 .cse11 .cse12 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse13 .cse14 (= |ULTIMATE.start_main_~k~0#1| 0) .cse15 (<= 1 .cse8) .cse16 .cse17 .cse18 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse19 .cse20 .cse21 .cse22 .cse23 .cse25 .cse26 .cse28)))) [2022-11-20 20:35:06,880 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse37 (select |#memory_int| 1)) (.cse36 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse2 (or (= (+ .cse4 .cse5) .cse8) (not (= |ULTIMATE.start_main_~c~0#1| 0)))) (.cse24 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse27 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse30 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse3 (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~b~0#1|) (+ .cse6 .cse7 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse31 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse29 (<= .cse36 2)) (.cse32 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse34 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse35 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse9 (= 11 (select |#length| 2))) (.cse10 (= 2 (select |#length| 1))) (.cse11 (= (+ .cse6 .cse7) |ULTIMATE.start_main_~b~0#1|)) (.cse12 (= (select |#valid| 3) 1)) (.cse13 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= (select |#valid| 1) 1)) (.cse16 (= (select |#valid| 0) 0)) (.cse17 (= (select |#valid| 2) 1)) (.cse18 (= |#NULL.offset| 0)) (.cse19 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (= (select .cse37 0) 48)) (.cse21 (= .cse8 |ULTIMATE.start_main_~a~0#1|)) (.cse22 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse23 (= (select .cse37 1) 0)) (.cse25 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse26 (< 0 |#StackHeapBarrier|)) (.cse28 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (or (= (+ .cse4 .cse5 .cse6 .cse7) .cse8) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 (= .cse27 |ULTIMATE.start_main_~x~0#1|) .cse28) (and .cse0 .cse1 .cse2 .cse3 .cse9 .cse10 .cse11 .cse12 .cse29 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse28) (and .cse0 .cse30 .cse3 (= .cse27 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse31 .cse12 .cse32 .cse33 .cse34 .cse15 .cse35 .cse16 .cse17 .cse18 .cse20 (<= .cse27 2) .cse23 .cse26 .cse28) (and .cse0 .cse30 .cse3 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse9 .cse10 .cse31 .cse12 .cse29 .cse32 .cse33 .cse34 .cse15 .cse35 (= .cse36 |ULTIMATE.start_main_~y~0#1|) .cse16 .cse17 .cse18 .cse20 .cse21 .cse23 (= 2 |ULTIMATE.start_main_~k~0#1|) .cse26 .cse28) (and .cse0 .cse1 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse9 .cse10 .cse11 .cse12 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse13 .cse14 (= |ULTIMATE.start_main_~k~0#1| 0) .cse15 (<= 1 .cse8) .cse16 .cse17 .cse18 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse19 .cse20 .cse21 .cse22 .cse23 .cse25 .cse26 .cse28)))) [2022-11-20 20:35:06,881 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 20:35:06,881 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 20:35:06,881 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 20:35:06,882 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse37 (select |#memory_int| 1)) (.cse36 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse2 (or (= (+ .cse4 .cse5) .cse8) (not (= |ULTIMATE.start_main_~c~0#1| 0)))) (.cse24 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse27 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse30 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse3 (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~b~0#1|) (+ .cse6 .cse7 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse31 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse29 (<= .cse36 2)) (.cse32 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse34 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse35 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse9 (= 11 (select |#length| 2))) (.cse10 (= 2 (select |#length| 1))) (.cse11 (= (+ .cse6 .cse7) |ULTIMATE.start_main_~b~0#1|)) (.cse12 (= (select |#valid| 3) 1)) (.cse13 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= (select |#valid| 1) 1)) (.cse16 (= (select |#valid| 0) 0)) (.cse17 (= (select |#valid| 2) 1)) (.cse18 (= |#NULL.offset| 0)) (.cse19 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (= (select .cse37 0) 48)) (.cse21 (= .cse8 |ULTIMATE.start_main_~a~0#1|)) (.cse22 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse23 (= (select .cse37 1) 0)) (.cse25 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse26 (< 0 |#StackHeapBarrier|)) (.cse28 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (or (= (+ .cse4 .cse5 .cse6 .cse7) .cse8) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 (= .cse27 |ULTIMATE.start_main_~x~0#1|) .cse28) (and .cse0 .cse1 .cse2 .cse3 .cse9 .cse10 .cse11 .cse12 .cse29 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse28) (and .cse0 .cse30 .cse3 (= .cse27 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse31 .cse12 .cse32 .cse33 .cse34 .cse15 .cse35 .cse16 .cse17 .cse18 .cse20 (<= .cse27 2) .cse23 .cse26 .cse28) (and .cse0 .cse30 .cse3 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse9 .cse10 .cse31 .cse12 .cse29 .cse32 .cse33 .cse34 .cse15 .cse35 (= .cse36 |ULTIMATE.start_main_~y~0#1|) .cse16 .cse17 .cse18 .cse20 .cse21 .cse23 (= 2 |ULTIMATE.start_main_~k~0#1|) .cse26 .cse28) (and .cse0 .cse1 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse9 .cse10 .cse11 .cse12 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse13 .cse14 (= |ULTIMATE.start_main_~k~0#1| 0) .cse15 (<= 1 .cse8) .cse16 .cse17 .cse18 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse19 .cse20 .cse21 .cse22 .cse23 .cse25 .cse26 .cse28)))) [2022-11-20 20:35:06,882 INFO L895 garLoopResultBuilder]: At program point L41-1(lines 39 68) the Hoare annotation is: (let ((.cse20 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse25 (select |#memory_int| 1)) (.cse23 (<= |ULTIMATE.start_main_~y~0#1| 2))) (let ((.cse7 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse18 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse2 (not (= (ite (and .cse23 (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse0 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse21 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse19 (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse1 (= (select |#length| 3) 12)) (.cse3 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|)) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse8 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse9 (= (select |#valid| 1) 1)) (.cse10 (= (select |#valid| 0) 0)) (.cse11 (= (select |#valid| 2) 1)) (.cse12 (= |#NULL.offset| 0)) (.cse13 (= (select .cse25 0) 48)) (.cse14 (= .cse20 |ULTIMATE.start_main_~a~0#1|)) (.cse15 (= (select .cse25 1) 0)) (.cse22 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (and (<= 0 (+ 4611686016279904256 |ULTIMATE.start_main_~xy~0#1|)) (< |ULTIMATE.start_main_~c~0#1| .cse0) .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse6 (<= 0 (+ 4611686016279904256 |ULTIMATE.start_main_~yy~0#1|)) (<= 0 |ULTIMATE.start_main_~p~0#1|) (<= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 1) .cse7 (= |ULTIMATE.start_main_~s~0#1| 0) .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (<= |ULTIMATE.start_main_~yy~0#1| 4611686018427387904) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387904) .cse15 .cse16 .cse17) (and (= |ULTIMATE.start_main_~c~0#1| 0) .cse1 .cse18 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse4 .cse5 (= .cse19 |ULTIMATE.start_main_~b~0#1|) .cse6 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse7 .cse9 (<= 1 .cse20) .cse10 .cse11 .cse12 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse13 (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2) .cse14 .cse21 .cse15 .cse22 .cse16 .cse17) (and (<= (* 2 |ULTIMATE.start_main_~c~0#1|) 1) (<= 0 |ULTIMATE.start_main_~b~0#1|) .cse1 .cse18 .cse2 .cse4 .cse5 .cse6 (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (<= .cse0 1) .cse21 (= .cse19 0) .cse15 .cse16 .cse17) (let ((.cse24 (* 2 |ULTIMATE.start_main_~x~0#1|))) (and .cse1 .cse23 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse3 .cse4 .cse5 .cse6 (<= .cse24 |ULTIMATE.start_main_~y~0#1|) (= (+ 2 |ULTIMATE.start_main_~q~0#1|) 0) .cse8 .cse9 .cse10 .cse11 .cse12 (= |ULTIMATE.start_main_~y~0#1| (+ .cse24 |ULTIMATE.start_main_~b~0#1|)) .cse13 .cse14 (not (<= (* 3 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~y~0#1|)) .cse15 .cse22 .cse16 .cse17))))) [2022-11-20 20:35:06,883 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse1 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= .cse0 |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= .cse0 0) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 20:35:06,883 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:35:06,883 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 20:35:06,884 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse37 (select |#memory_int| 1)) (.cse36 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse2 (or (= (+ .cse4 .cse5) .cse8) (not (= |ULTIMATE.start_main_~c~0#1| 0)))) (.cse24 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse27 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse30 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse3 (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~b~0#1|) (+ .cse6 .cse7 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse31 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse29 (<= .cse36 2)) (.cse32 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse34 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse35 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse9 (= 11 (select |#length| 2))) (.cse10 (= 2 (select |#length| 1))) (.cse11 (= (+ .cse6 .cse7) |ULTIMATE.start_main_~b~0#1|)) (.cse12 (= (select |#valid| 3) 1)) (.cse13 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= (select |#valid| 1) 1)) (.cse16 (= (select |#valid| 0) 0)) (.cse17 (= (select |#valid| 2) 1)) (.cse18 (= |#NULL.offset| 0)) (.cse19 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (= (select .cse37 0) 48)) (.cse21 (= .cse8 |ULTIMATE.start_main_~a~0#1|)) (.cse22 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse23 (= (select .cse37 1) 0)) (.cse25 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse26 (< 0 |#StackHeapBarrier|)) (.cse28 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (or (= (+ .cse4 .cse5 .cse6 .cse7) .cse8) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 (= .cse27 |ULTIMATE.start_main_~x~0#1|) .cse28) (and .cse0 .cse1 .cse2 .cse3 .cse9 .cse10 .cse11 .cse12 .cse29 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse28) (and .cse0 .cse30 .cse3 (= .cse27 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse31 .cse12 .cse32 .cse33 .cse34 .cse15 .cse35 .cse16 .cse17 .cse18 .cse20 (<= .cse27 2) .cse23 .cse26 .cse28) (and .cse0 .cse30 .cse3 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse9 .cse10 .cse31 .cse12 .cse29 .cse32 .cse33 .cse34 .cse15 .cse35 (= .cse36 |ULTIMATE.start_main_~y~0#1|) .cse16 .cse17 .cse18 .cse20 .cse21 .cse23 (= 2 |ULTIMATE.start_main_~k~0#1|) .cse26 .cse28) (and .cse0 .cse1 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse9 .cse10 .cse11 .cse12 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse13 .cse14 (= |ULTIMATE.start_main_~k~0#1| 0) .cse15 (<= 1 .cse8) .cse16 .cse17 .cse18 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse19 .cse20 .cse21 .cse22 .cse23 .cse25 .cse26 .cse28)))) [2022-11-20 20:35:06,884 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2022-11-20 20:35:06,884 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse6 (select |#memory_int| 1)) (.cse1 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse0 (= (+ .cse3 .cse4) |ULTIMATE.start_main_~b~0#1|)) (.cse7 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (or (= |ULTIMATE.start_main_~b~0#1| 0) .cse0) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (or (= (+ .cse1 .cse2 .cse3 .cse4) .cse5) (<= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse6 0) 48) (= .cse5 |ULTIMATE.start_main_~a~0#1|) (= (select .cse6 1) 0) (or (= (+ .cse1 .cse2) .cse5) .cse7 (not (= |ULTIMATE.start_main_~c~0#1| 0))) (or .cse0 .cse7) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0)))) [2022-11-20 20:35:06,885 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse1 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= (select |#valid| 1) 1) (<= 1 .cse0) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (select .cse1 0) 48) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2) (= .cse0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse1 1) 0) (= |ULTIMATE.start_main_~s~0#1| 1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 20:35:06,885 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse1 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= (select |#valid| 1) 1) (<= 1 .cse0) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (select .cse1 0) 48) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2) (= .cse0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse1 1) 0) (= |ULTIMATE.start_main_~s~0#1| 1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 20:35:06,885 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-20 20:35:06,886 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-20 20:35:06,886 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-20 20:35:06,886 INFO L899 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2022-11-20 20:35:06,886 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse37 (select |#memory_int| 1)) (.cse36 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse2 (or (= (+ .cse4 .cse5) .cse8) (not (= |ULTIMATE.start_main_~c~0#1| 0)))) (.cse24 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse27 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse30 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse3 (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~b~0#1|) (+ .cse6 .cse7 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse31 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse29 (<= .cse36 2)) (.cse32 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse34 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse35 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse9 (= 11 (select |#length| 2))) (.cse10 (= 2 (select |#length| 1))) (.cse11 (= (+ .cse6 .cse7) |ULTIMATE.start_main_~b~0#1|)) (.cse12 (= (select |#valid| 3) 1)) (.cse13 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= (select |#valid| 1) 1)) (.cse16 (= (select |#valid| 0) 0)) (.cse17 (= (select |#valid| 2) 1)) (.cse18 (= |#NULL.offset| 0)) (.cse19 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (= (select .cse37 0) 48)) (.cse21 (= .cse8 |ULTIMATE.start_main_~a~0#1|)) (.cse22 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse23 (= (select .cse37 1) 0)) (.cse25 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse26 (< 0 |#StackHeapBarrier|)) (.cse28 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (or (= (+ .cse4 .cse5 .cse6 .cse7) .cse8) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 (= .cse27 |ULTIMATE.start_main_~x~0#1|) .cse28) (and .cse0 .cse1 .cse2 .cse3 .cse9 .cse10 .cse11 .cse12 .cse29 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse28) (and .cse0 .cse30 .cse3 (= .cse27 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse31 .cse12 .cse32 .cse33 .cse34 .cse15 .cse35 .cse16 .cse17 .cse18 .cse20 (<= .cse27 2) .cse23 .cse26 .cse28) (and .cse0 .cse30 .cse3 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse9 .cse10 .cse31 .cse12 .cse29 .cse32 .cse33 .cse34 .cse15 .cse35 (= .cse36 |ULTIMATE.start_main_~y~0#1|) .cse16 .cse17 .cse18 .cse20 .cse21 .cse23 (= 2 |ULTIMATE.start_main_~k~0#1|) .cse26 .cse28) (and .cse0 .cse1 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse9 .cse10 .cse11 .cse12 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse13 .cse14 (= |ULTIMATE.start_main_~k~0#1| 0) .cse15 (<= 1 .cse8) .cse16 .cse17 .cse18 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse19 .cse20 .cse21 .cse22 .cse23 .cse25 .cse26 .cse28)))) [2022-11-20 20:35:06,887 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2022-11-20 20:35:06,887 INFO L902 garLoopResultBuilder]: At program point L72(line 72) the Hoare annotation is: true [2022-11-20 20:35:06,887 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-20 20:35:06,887 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-20 20:35:06,887 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-20 20:35:06,888 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-20 20:35:06,888 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-20 20:35:06,888 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-20 20:35:06,888 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-20 20:35:06,888 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-20 20:35:06,891 INFO L444 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:35:06,893 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:35:06,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:35:06 BoogieIcfgContainer [2022-11-20 20:35:06,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:35:06,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:35:06,924 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:35:06,924 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:35:06,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:28:39" (3/4) ... [2022-11-20 20:35:06,928 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:35:06,933 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-20 20:35:06,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 20:35:06,937 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-20 20:35:06,938 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 20:35:06,938 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 20:35:06,938 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:35:06,977 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:35:06,977 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:35:06,978 INFO L158 Benchmark]: Toolchain (without parser) took 388657.25ms. Allocated memory was 132.1MB in the beginning and 599.8MB in the end (delta: 467.7MB). Free memory was 91.3MB in the beginning and 216.1MB in the end (delta: -124.8MB). Peak memory consumption was 344.7MB. Max. memory is 16.1GB. [2022-11-20 20:35:06,978 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 47.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:35:06,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.28ms. Allocated memory is still 132.1MB. Free memory was 91.1MB in the beginning and 80.1MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 20:35:06,979 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.22ms. Allocated memory is still 132.1MB. Free memory was 80.1MB in the beginning and 78.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:35:06,979 INFO L158 Benchmark]: Boogie Preprocessor took 26.16ms. Allocated memory is still 132.1MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:35:06,980 INFO L158 Benchmark]: RCFGBuilder took 485.87ms. Allocated memory is still 132.1MB. Free memory was 77.3MB in the beginning and 101.7MB in the end (delta: -24.4MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2022-11-20 20:35:06,980 INFO L158 Benchmark]: TraceAbstraction took 387716.67ms. Allocated memory was 132.1MB in the beginning and 599.8MB in the end (delta: 467.7MB). Free memory was 101.0MB in the beginning and 219.3MB in the end (delta: -118.3MB). Peak memory consumption was 365.1MB. Max. memory is 16.1GB. [2022-11-20 20:35:06,980 INFO L158 Benchmark]: Witness Printer took 53.41ms. Allocated memory is still 599.8MB. Free memory was 219.3MB in the beginning and 216.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:35:06,982 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 47.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.28ms. Allocated memory is still 132.1MB. Free memory was 91.1MB in the beginning and 80.1MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.22ms. Allocated memory is still 132.1MB. Free memory was 80.1MB in the beginning and 78.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.16ms. Allocated memory is still 132.1MB. Free memory was 78.5MB in the beginning and 77.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 485.87ms. Allocated memory is still 132.1MB. Free memory was 77.3MB in the beginning and 101.7MB in the end (delta: -24.4MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * TraceAbstraction took 387716.67ms. Allocated memory was 132.1MB in the beginning and 599.8MB in the end (delta: 467.7MB). Free memory was 101.0MB in the beginning and 219.3MB in the end (delta: -118.3MB). Peak memory consumption was 365.1MB. Max. memory is 16.1GB. * Witness Printer took 53.41ms. Allocated memory is still 599.8MB. Free memory was 219.3MB in the beginning and 216.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 387.5s, OverallIterations: 16, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 35.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 21.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 860 SdHoareTripleChecker+Valid, 17.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 791 mSDsluCounter, 2530 SdHoareTripleChecker+Invalid, 16.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1867 mSDsCounter, 1166 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5050 IncrementalHoareTripleChecker+Invalid, 6216 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1166 mSolverCounterUnsat, 663 mSDtfsCounter, 5050 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3282 GetRequests, 2612 SyntacticMatches, 172 SemanticMatches, 498 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10107 ImplicationChecksByTransitivity, 273.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=14, InterpolantAutomatonStates: 220, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 16 MinimizatonAttempts, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 194 PreInvPairs, 266 NumberOfFragments, 4946 HoareAnnotationTreeSize, 194 FomulaSimplifications, 4489 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 48933 FormulaSimplificationTreeSizeReductionInter, 20.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 1127 NumberOfCodeBlocks, 1046 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2155 ConstructedInterpolants, 0 QuantifiedInterpolants, 8322 SizeOfPredicates, 104 NumberOfNonLiveVariables, 3050 ConjunctsInSsa, 374 ConjunctsInUnsatCore, 30 InterpolantComputations, 4 PerfectInterpolantSequences, 7453/7936 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 13.0s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 98, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 51, TOOLS_POST_TIME: 0.8s, TOOLS_POST_CALL_APPLICATIONS: 92, TOOLS_POST_CALL_TIME: 9.5s, TOOLS_POST_RETURN_APPLICATIONS: 66, TOOLS_POST_RETURN_TIME: 0.8s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 209, TOOLS_QUANTIFIERELIM_TIME: 11.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.5s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 227, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 116, DOMAIN_JOIN_TIME: 1.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 98, DOMAIN_ISBOTTOM_TIME: 0.2s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 4.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 4.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 66, CALL_SUMMARIZER_CACHE_MISSES: 5, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 1324, DAG_COMPRESSION_RETAINED_NODES: 224, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && (k * q * x + k * s * y == r * y + p * x || !(c == 0))) && xy * q + yy * s + b == s * y + q * x + b * y) && (k * q * x + k * s * y + s * y + q * x == r * y + p * x || !(b == c))) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && s * y + q * x == b) && \valid[3] == 1) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && b <= x) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && b + c == x) && #NULL == 0) || ((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && (k * q * x + k * s * y == r * y + p * x || !(c == 0))) && xy * q + yy * s + b == s * y + q * x + b * y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && s * y + q * x == b) && \valid[3] == 1) && 2 * b + c <= 2) && 0 <= c) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && b <= x) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((((unknown-#length-unknown[3] == 12 && a == c + b * k) && xy * q + yy * s + b == s * y + q * x + b * y) && b + c == y) && p == 0) && a == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && 1 <= c) && b == x) && \valid[3] == 1) && q == 1) && s == 0) && 1 <= x) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && b + c <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((((unknown-#length-unknown[3] == 12 && a == c + b * k) && xy * q + yy * s + b == s * y + q * x + b * y) && b + 1 <= a) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && 2 * b + c <= 2) && q == 1) && s == 0) && 1 <= x) && \valid[1] == 1) && r == 1) && 2 * b + c == y) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && unknown-#memory_int-unknown[1][1] == 0) && 2 == k) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && yy == y * y) && a == c) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && s * y + q * x == b) && \valid[3] == 1) && b <= 2) && r == 0) && q == 0) && k == 0) && \valid[1] == 1) && 1 <= r * y + p * x) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && xy == x * y) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((0 <= 4611686016279904256 + xy && c < 2 * b) && unknown-#length-unknown[3] == 12) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b + 1 <= a) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && 0 <= 4611686016279904256 + yy) && 0 <= p) && p <= 1) && q == 1) && k == 0) && s == 0) && b <= c) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && yy <= 4611686018427387904) && xy <= 4611686018427387904) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((((((c == 0 && unknown-#length-unknown[3] == 12) && !((if 1 <= y then 1 else 0) == 0)) && yy == y * y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && s * y + q * x == b) && \valid[3] == 1) && r == 0) && q == 0) && k == 0) && \valid[1] == 1) && 1 <= r * y + p * x) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && xy == x * y) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && b + c <= 2) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((2 * c <= 1 && 0 <= b) && unknown-#length-unknown[3] == 12) && !((if 1 <= y then 1 else 0) == 0)) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 0 <= c) && 1 <= x) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && 2 * b <= 1) && x <= 2) && s * y + q * x == 0) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((unknown-#length-unknown[3] == 12 && y <= 2) && a <= 2) && b + 1 <= a) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 2 * x <= y) && 2 + q == 0) && b <= c) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && y == 2 * x + b) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && !(3 * x <= y)) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-11-20 20:35:07,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22300aa7-8eef-47c2-b3e5-f7b5a6cf7f85/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE