./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI --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 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --- 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-5e519f3 [2022-11-03 03:59:11,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:59:11,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:59:11,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:59:11,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:59:11,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:59:11,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:59:11,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:59:11,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:59:11,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:59:11,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:59:11,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:59:11,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:59:11,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:59:11,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:59:11,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:59:11,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:59:11,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:59:11,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:59:11,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:59:11,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:59:11,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:59:11,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:59:11,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:59:11,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:59:11,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:59:11,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:59:11,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:59:11,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:59:11,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:59:11,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:59:11,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:59:11,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:59:11,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:59:11,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:59:11,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:59:11,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:59:11,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:59:11,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:59:11,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:59:11,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:59:11,495 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:59:11,537 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:59:11,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:59:11,538 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:59:11,538 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:59:11,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:59:11,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:59:11,539 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:59:11,540 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:59:11,540 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:59:11,540 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:59:11,541 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:59:11,541 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:59:11,541 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:59:11,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:59:11,542 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:59:11,542 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:59:11,542 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:59:11,542 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:59:11,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:59:11,543 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:59:11,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:59:11,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:59:11,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:59:11,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:59:11,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:59:11,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:59:11,546 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:59:11,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:59:11,546 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:59:11,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:59:11,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:59:11,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:59:11,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:59:11,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:59:11,548 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:59:11,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:59:11,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:59:11,548 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:59:11,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:59:11,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:59:11,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:59:11,549 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_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a [2022-11-03 03:59:11,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:59:11,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:59:11,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:59:11,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:59:11,821 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:59:11,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2022-11-03 03:59:11,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/data/2659894d0/76e59b83fa49402696617a4fe5843636/FLAG2cd53548a [2022-11-03 03:59:12,490 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:59:12,491 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2022-11-03 03:59:12,499 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/data/2659894d0/76e59b83fa49402696617a4fe5843636/FLAG2cd53548a [2022-11-03 03:59:12,834 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/data/2659894d0/76e59b83fa49402696617a4fe5843636 [2022-11-03 03:59:12,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:59:12,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:59:12,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:59:12,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:59:12,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:59:12,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:12" (1/1) ... [2022-11-03 03:59:12,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa608a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:12, skipping insertion in model container [2022-11-03 03:59:12,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:12" (1/1) ... [2022-11-03 03:59:12,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:59:12,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:59:13,091 WARN L230 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_66e4f137-f668-43e2-bb9d-63e59caf9431/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2022-11-03 03:59:13,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:59:13,146 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:59:13,159 WARN L230 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_66e4f137-f668-43e2-bb9d-63e59caf9431/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2022-11-03 03:59:13,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:59:13,184 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:59:13,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13 WrapperNode [2022-11-03 03:59:13,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:59:13,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:59:13,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:59:13,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:59:13,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13" (1/1) ... [2022-11-03 03:59:13,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13" (1/1) ... [2022-11-03 03:59:13,229 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2022-11-03 03:59:13,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:59:13,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:59:13,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:59:13,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:59:13,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13" (1/1) ... [2022-11-03 03:59:13,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13" (1/1) ... [2022-11-03 03:59:13,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13" (1/1) ... [2022-11-03 03:59:13,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13" (1/1) ... [2022-11-03 03:59:13,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13" (1/1) ... [2022-11-03 03:59:13,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13" (1/1) ... [2022-11-03 03:59:13,255 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13" (1/1) ... [2022-11-03 03:59:13,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13" (1/1) ... [2022-11-03 03:59:13,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:59:13,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:59:13,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:59:13,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:59:13,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13" (1/1) ... [2022-11-03 03:59:13,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:59:13,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:13,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:59:13,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:59:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:59:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:59:13,345 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:59:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:59:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:59:13,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:59:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 03:59:13,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 03:59:13,413 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:59:13,415 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:59:13,729 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:59:13,757 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:59:13,757 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 03:59:13,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:13 BoogieIcfgContainer [2022-11-03 03:59:13,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:59:13,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:59:13,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:59:13,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:59:13,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:59:12" (1/3) ... [2022-11-03 03:59:13,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704b7919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:13, skipping insertion in model container [2022-11-03 03:59:13,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:13" (2/3) ... [2022-11-03 03:59:13,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704b7919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:13, skipping insertion in model container [2022-11-03 03:59:13,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:13" (3/3) ... [2022-11-03 03:59:13,771 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2022-11-03 03:59:13,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:59:13,818 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:59:13,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:59:13,949 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;@22b0463c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:59:13,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:59:13,958 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) [2022-11-03 03:59:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 03:59:13,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:13,970 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] [2022-11-03 03:59:13,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:13,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:13,989 INFO L85 PathProgramCache]: Analyzing trace with hash 966807424, now seen corresponding path program 1 times [2022-11-03 03:59:14,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:14,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356104727] [2022-11-03 03:59:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:14,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:14,182 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:59:14,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543377134] [2022-11-03 03:59:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:14,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:14,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:14,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:14,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:59:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:14,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 03:59:14,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 03:59:14,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:59:14,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:14,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356104727] [2022-11-03 03:59:14,388 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:59:14,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543377134] [2022-11-03 03:59:14,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543377134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:14,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:14,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:59:14,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300333238] [2022-11-03 03:59:14,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:14,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:59:14,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:14,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:59:14,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:59:14,466 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) [2022-11-03 03:59:14,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:14,529 INFO L93 Difference]: Finished difference Result 49 states and 78 transitions. [2022-11-03 03:59:14,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:59:14,533 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 [2022-11-03 03:59:14,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:14,554 INFO L225 Difference]: With dead ends: 49 [2022-11-03 03:59:14,563 INFO L226 Difference]: Without dead ends: 28 [2022-11-03 03:59:14,567 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 [2022-11-03 03:59:14,571 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 [2022-11-03 03:59:14,574 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] [2022-11-03 03:59:14,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-03 03:59:14,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-03 03:59:14,615 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) [2022-11-03 03:59:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2022-11-03 03:59:14,619 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 26 [2022-11-03 03:59:14,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:14,621 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2022-11-03 03:59:14,621 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) [2022-11-03 03:59:14,621 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2022-11-03 03:59:14,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 03:59:14,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:14,624 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] [2022-11-03 03:59:14,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 03:59:14,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 03:59:14,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:14,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:14,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1643993843, now seen corresponding path program 1 times [2022-11-03 03:59:14,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:14,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993832758] [2022-11-03 03:59:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:14,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:14,850 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:59:14,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682823814] [2022-11-03 03:59:14,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:14,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:14,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:14,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:14,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:59:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:14,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 03:59:14,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-03 03:59:15,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-03 03:59:15,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:15,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993832758] [2022-11-03 03:59:15,214 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:59:15,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682823814] [2022-11-03 03:59:15,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682823814] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:59:15,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1671260810] [2022-11-03 03:59:15,239 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-03 03:59:15,239 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:59:15,244 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:59:15,251 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:59:15,252 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:59:16,345 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-03 03:59:16,372 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:59:17,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1671260810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:17,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:59:17,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 5] total 14 [2022-11-03 03:59:17,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246727643] [2022-11-03 03:59:17,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:17,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 03:59:17,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:17,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 03:59:17,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:59:17,528 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) [2022-11-03 03:59:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:17,783 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-11-03 03:59:17,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 03:59:17,785 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 [2022-11-03 03:59:17,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:17,786 INFO L225 Difference]: With dead ends: 38 [2022-11-03 03:59:17,786 INFO L226 Difference]: Without dead ends: 30 [2022-11-03 03:59:17,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:59:17,788 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 44 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:17,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 48 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:59:17,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-03 03:59:17,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-03 03:59:17,808 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) [2022-11-03 03:59:17,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2022-11-03 03:59:17,810 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 27 [2022-11-03 03:59:17,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:17,811 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2022-11-03 03:59:17,811 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) [2022-11-03 03:59:17,812 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2022-11-03 03:59:17,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 03:59:17,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:17,813 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] [2022-11-03 03:59:17,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:18,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:18,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:18,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:18,030 INFO L85 PathProgramCache]: Analyzing trace with hash -575116102, now seen corresponding path program 1 times [2022-11-03 03:59:18,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:18,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751857555] [2022-11-03 03:59:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:18,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:18,049 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:59:18,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592430832] [2022-11-03 03:59:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:18,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:18,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:18,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:18,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:59:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:18,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 03:59:18,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-03 03:59:18,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 03:59:18,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:18,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751857555] [2022-11-03 03:59:18,333 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:59:18,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592430832] [2022-11-03 03:59:18,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592430832] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:18,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:59:18,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-11-03 03:59:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152820527] [2022-11-03 03:59:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:18,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:59:18,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:18,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:59:18,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-03 03:59:18,336 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) [2022-11-03 03:59:18,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:18,421 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-11-03 03:59:18,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:59:18,422 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 [2022-11-03 03:59:18,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:18,424 INFO L225 Difference]: With dead ends: 36 [2022-11-03 03:59:18,424 INFO L226 Difference]: Without dead ends: 34 [2022-11-03 03:59:18,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:59:18,426 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:18,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 102 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:59:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-03 03:59:18,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-03 03:59:18,446 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) [2022-11-03 03:59:18,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-11-03 03:59:18,447 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 28 [2022-11-03 03:59:18,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:18,448 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-11-03 03:59:18,448 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) [2022-11-03 03:59:18,448 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-11-03 03:59:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-03 03:59:18,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:18,450 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] [2022-11-03 03:59:18,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:18,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:18,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:18,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:18,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1810277145, now seen corresponding path program 1 times [2022-11-03 03:59:18,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:18,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135995689] [2022-11-03 03:59:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:18,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:18,681 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:59:18,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411492519] [2022-11-03 03:59:18,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:18,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:18,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:18,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:18,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:59:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:18,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 03:59:18,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 03:59:18,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:19,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:19,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135995689] [2022-11-03 03:59:19,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:59:19,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411492519] [2022-11-03 03:59:19,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411492519] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:19,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1526022578] [2022-11-03 03:59:19,049 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-03 03:59:19,049 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:59:19,050 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:59:19,050 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:59:19,051 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:59:19,881 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-03 03:59:19,892 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-03 03:59:19,912 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:59:21,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1526022578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:21,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:59:21,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 20 [2022-11-03 03:59:21,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007256335] [2022-11-03 03:59:21,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:21,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:59:21,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:59:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:59:21,674 INFO L87 Difference]: Start difference. First operand 34 states and 44 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-03 03:59:22,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:22,058 INFO L93 Difference]: Finished difference Result 69 states and 88 transitions. [2022-11-03 03:59:22,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:59:22,058 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 33 [2022-11-03 03:59:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:22,060 INFO L225 Difference]: With dead ends: 69 [2022-11-03 03:59:22,060 INFO L226 Difference]: Without dead ends: 48 [2022-11-03 03:59:22,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:59:22,062 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:22,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 58 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:59:22,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-03 03:59:22,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-11-03 03:59:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 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) [2022-11-03 03:59:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2022-11-03 03:59:22,086 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 33 [2022-11-03 03:59:22,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:22,087 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2022-11-03 03:59:22,087 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-03 03:59:22,088 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2022-11-03 03:59:22,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 03:59:22,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:22,089 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 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] [2022-11-03 03:59:22,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:22,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:22,306 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:22,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:22,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1678681992, now seen corresponding path program 1 times [2022-11-03 03:59:22,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:22,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808883582] [2022-11-03 03:59:22,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:22,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:22,331 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:59:22,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256914043] [2022-11-03 03:59:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:22,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:22,354 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:22,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:59:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:22,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:59:22,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-03 03:59:22,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-03 03:59:22,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:22,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808883582] [2022-11-03 03:59:22,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:59:22,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256914043] [2022-11-03 03:59:22,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256914043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:59:22,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [86414888] [2022-11-03 03:59:22,583 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-03 03:59:22,583 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:59:22,584 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:59:22,584 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:59:22,584 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:59:34,954 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-03 03:59:34,968 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-03 03:59:34,986 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:59:38,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [86414888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:38,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:59:38,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [7, 6] total 22 [2022-11-03 03:59:38,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135909489] [2022-11-03 03:59:38,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:38,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 03:59:38,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:38,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 03:59:38,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:59:38,178 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 8 states have internal predecessors, (13), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-03 03:59:38,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:38,838 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2022-11-03 03:59:38,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 03:59:38,841 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 1.3) internal successors, (13), 8 states have internal predecessors, (13), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 55 [2022-11-03 03:59:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:38,843 INFO L225 Difference]: With dead ends: 65 [2022-11-03 03:59:38,843 INFO L226 Difference]: Without dead ends: 63 [2022-11-03 03:59:38,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 125 SyntacticMatches, 18 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:59:38,845 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:38,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 51 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:59:38,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-03 03:59:38,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2022-11-03 03:59:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-03 03:59:38,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2022-11-03 03:59:38,878 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 55 [2022-11-03 03:59:38,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:38,879 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2022-11-03 03:59:38,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 1.3) internal successors, (13), 8 states have internal predecessors, (13), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-03 03:59:38,880 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2022-11-03 03:59:38,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 03:59:38,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:38,882 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] [2022-11-03 03:59:38,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:39,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:39,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:39,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2003369438, now seen corresponding path program 1 times [2022-11-03 03:59:39,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:39,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405160621] [2022-11-03 03:59:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:39,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:39,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 03:59:39,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051344852] [2022-11-03 03:59:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:39,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:39,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:39,131 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:39,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:59:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:39,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 03:59:39,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-03 03:59:39,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-03 03:59:40,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:40,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405160621] [2022-11-03 03:59:40,602 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 03:59:40,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051344852] [2022-11-03 03:59:40,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051344852] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:59:40,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1193951445] [2022-11-03 03:59:40,612 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-03 03:59:40,613 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:59:40,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:59:40,614 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:59:40,614 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:59:44,731 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-03 03:59:44,800 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-03 03:59:44,817 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:00:20,167 WARN L234 SmtUtils]: Spent 26.45s on a formula simplification. DAG size of input: 179 DAG size of output: 150 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:00:35,286 WARN L234 SmtUtils]: Spent 9.58s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:00:50,962 WARN L234 SmtUtils]: Spent 14.19s on a formula simplification. DAG size of input: 77 DAG size of output: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:01:20,649 WARN L234 SmtUtils]: Spent 25.46s on a formula simplification. DAG size of input: 177 DAG size of output: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:01:20,687 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2085#(and (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:01:20,687 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:01:20,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:20,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-03 04:01:20,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336473986] [2022-11-03 04:01:20,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 04:01:20,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 04:01:20,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:01:20,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 04:01:20,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1163, Unknown=0, NotChecked=0, Total=1332 [2022-11-03 04:01:20,691 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 11 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-03 04:01:26,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:26,627 INFO L93 Difference]: Finished difference Result 180 states and 265 transitions. [2022-11-03 04:01:26,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 04:01:26,628 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 11 states have call successors, (28), 2 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 [2022-11-03 04:01:26,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:26,632 INFO L225 Difference]: With dead ends: 180 [2022-11-03 04:01:26,632 INFO L226 Difference]: Without dead ends: 178 [2022-11-03 04:01:26,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 171 SyntacticMatches, 14 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 98.3s TimeCoverageRelationStatistics Valid=524, Invalid=3508, Unknown=0, NotChecked=0, Total=4032 [2022-11-03 04:01:26,635 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 103 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:26,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 421 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 04:01:26,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-03 04:01:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 129. [2022-11-03 04:01:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 71 states have internal predecessors, (84), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-03 04:01:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 181 transitions. [2022-11-03 04:01:26,734 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 181 transitions. Word has length 74 [2022-11-03 04:01:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:26,735 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 181 transitions. [2022-11-03 04:01:26,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 11 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-03 04:01:26,735 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 181 transitions. [2022-11-03 04:01:26,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 04:01:26,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:26,737 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] [2022-11-03 04:01:26,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:26,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 04:01:26,962 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:26,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:26,963 INFO L85 PathProgramCache]: Analyzing trace with hash -134461569, now seen corresponding path program 1 times [2022-11-03 04:01:26,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:01:26,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114079741] [2022-11-03 04:01:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:26,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:01:26,981 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:01:26,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [203384903] [2022-11-03 04:01:26,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:26,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:26,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:26,983 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:26,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 04:01:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:27,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 04:01:27,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 36 proven. 19 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-03 04:01:27,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:27,895 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-03 04:01:27,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:01:27,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114079741] [2022-11-03 04:01:27,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:01:27,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203384903] [2022-11-03 04:01:27,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203384903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:27,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2078641225] [2022-11-03 04:01:27,899 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-03 04:01:27,899 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:01:27,900 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:01:27,900 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:01:27,900 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:01:35,213 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-03 04:01:35,217 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-03 04:01:35,231 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:01:58,863 WARN L234 SmtUtils]: Spent 19.90s on a formula simplification. DAG size of input: 179 DAG size of output: 150 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:02:09,632 WARN L234 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:02:33,485 WARN L234 SmtUtils]: Spent 23.29s on a formula simplification. DAG size of input: 77 DAG size of output: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:03:11,973 WARN L234 SmtUtils]: Spent 33.94s on a formula simplification. DAG size of input: 177 DAG size of output: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:03:12,279 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3140#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:03:12,279 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:03:12,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:03:12,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 18 [2022-11-03 04:03:12,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405939495] [2022-11-03 04:03:12,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 04:03:12,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 04:03:12,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:03:12,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 04:03:12,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1289, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 04:03:12,282 INFO L87 Difference]: Start difference. First operand 129 states and 181 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 9 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-03 04:03:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:03:14,358 INFO L93 Difference]: Finished difference Result 176 states and 248 transitions. [2022-11-03 04:03:14,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 04:03:14,359 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 9 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 79 [2022-11-03 04:03:14,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:03:14,363 INFO L225 Difference]: With dead ends: 176 [2022-11-03 04:03:14,363 INFO L226 Difference]: Without dead ends: 166 [2022-11-03 04:03:14,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 190 SyntacticMatches, 13 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 97.9s TimeCoverageRelationStatistics Valid=301, Invalid=2149, Unknown=0, NotChecked=0, Total=2450 [2022-11-03 04:03:14,370 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 66 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:03:14,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 154 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 04:03:14,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-03 04:03:14,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 143. [2022-11-03 04:03:14,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 77 states have (on average 1.155844155844156) internal successors, (89), 80 states have internal predecessors, (89), 53 states have call successors, (53), 12 states have call predecessors, (53), 12 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-03 04:03:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 194 transitions. [2022-11-03 04:03:14,478 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 194 transitions. Word has length 79 [2022-11-03 04:03:14,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:03:14,479 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 194 transitions. [2022-11-03 04:03:14,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 9 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-03 04:03:14,479 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 194 transitions. [2022-11-03 04:03:14,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 04:03:14,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:03:14,481 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:03:14,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 04:03:14,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:03:14,694 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:03:14,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:03:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash -302322165, now seen corresponding path program 1 times [2022-11-03 04:03:14,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:03:14,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553547883] [2022-11-03 04:03:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:14,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:03:14,710 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:03:14,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163903042] [2022-11-03 04:03:14,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:03:14,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:03:14,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:03:14,712 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:03:14,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 04:03:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:03:14,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:03:14,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:03:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 88 proven. 13 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-03 04:03:14,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:03:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 28 proven. 13 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-03 04:03:15,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:03:15,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553547883] [2022-11-03 04:03:15,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:03:15,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163903042] [2022-11-03 04:03:15,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163903042] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:03:15,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2093009175] [2022-11-03 04:03:15,162 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-03 04:03:15,162 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:03:15,163 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:03:15,163 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:03:15,163 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:03:18,190 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 32 for LOIs [2022-11-03 04:03:18,224 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-03 04:03:18,238 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:03:47,684 WARN L234 SmtUtils]: Spent 26.32s on a formula simplification. DAG size of input: 175 DAG size of output: 142 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:04:16,208 WARN L234 SmtUtils]: Spent 19.64s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:04:16,295 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4211#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:04:16,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:04:16,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:04:16,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2022-11-03 04:04:16,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740394046] [2022-11-03 04:04:16,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 04:04:16,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 04:04:16,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:04:16,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 04:04:16,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2022-11-03 04:04:16,298 INFO L87 Difference]: Start difference. First operand 143 states and 194 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 10 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) [2022-11-03 04:04:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:16,847 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2022-11-03 04:04:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 04:04:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 10 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) Word has length 85 [2022-11-03 04:04:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:16,849 INFO L225 Difference]: With dead ends: 174 [2022-11-03 04:04:16,849 INFO L226 Difference]: Without dead ends: 115 [2022-11-03 04:04:16,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 210 SyntacticMatches, 13 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 58.3s TimeCoverageRelationStatistics Valid=266, Invalid=1456, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 04:04:16,851 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 35 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:16,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 222 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:04:16,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-03 04:04:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-11-03 04:04:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 64 states have (on average 1.109375) internal successors, (71), 66 states have internal predecessors, (71), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-03 04:04:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 146 transitions. [2022-11-03 04:04:16,917 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 146 transitions. Word has length 85 [2022-11-03 04:04:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:16,918 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 146 transitions. [2022-11-03 04:04:16,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 10 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) [2022-11-03 04:04:16,918 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 146 transitions. [2022-11-03 04:04:16,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 04:04:16,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:16,920 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:04:16,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:17,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:17,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:17,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:17,127 INFO L85 PathProgramCache]: Analyzing trace with hash -472889888, now seen corresponding path program 2 times [2022-11-03 04:04:17,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:04:17,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913023577] [2022-11-03 04:04:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:17,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:04:17,139 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 04:04:17,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827958951] [2022-11-03 04:04:17,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:04:17,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:17,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:04:17,141 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:04:17,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 04:04:17,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-03 04:04:17,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:04:17,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 04:04:17,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 73 proven. 32 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-11-03 04:04:18,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 67 proven. 30 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2022-11-03 04:04:21,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:04:21,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913023577] [2022-11-03 04:04:21,292 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 04:04:21,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827958951] [2022-11-03 04:04:21,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827958951] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:04:21,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2005216681] [2022-11-03 04:04:21,295 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-03 04:04:21,295 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:04:21,296 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:04:21,296 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:04:21,296 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:04:24,453 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-03 04:04:24,499 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-03 04:04:24,512 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:04:55,315 WARN L234 SmtUtils]: Spent 26.58s on a formula simplification. DAG size of input: 179 DAG size of output: 146 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:05:23,658 WARN L234 SmtUtils]: Spent 17.41s on a formula simplification. DAG size of input: 77 DAG size of output: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:05:46,609 WARN L234 SmtUtils]: Spent 18.83s on a formula simplification. DAG size of input: 177 DAG size of output: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:05:46,655 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5423#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:05:46,655 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:05:46,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:05:46,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 22 [2022-11-03 04:05:46,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480890602] [2022-11-03 04:05:46,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 04:05:46,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 04:05:46,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:46,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 04:05:46,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1489, Unknown=1, NotChecked=0, Total=1722 [2022-11-03 04:05:46,658 INFO L87 Difference]: Start difference. First operand 115 states and 146 transitions. Second operand has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 11 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2022-11-03 04:05:47,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:47,522 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2022-11-03 04:05:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 04:05:47,523 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 11 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) Word has length 118 [2022-11-03 04:05:47,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:47,524 INFO L225 Difference]: With dead ends: 120 [2022-11-03 04:05:47,524 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 04:05:47,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 292 SyntacticMatches, 20 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 84.7s TimeCoverageRelationStatistics Valid=272, Invalid=1797, Unknown=1, NotChecked=0, Total=2070 [2022-11-03 04:05:47,526 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:47,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 86 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 04:05:47,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 04:05:47,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 04:05:47,527 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) [2022-11-03 04:05:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 04:05:47,528 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 118 [2022-11-03 04:05:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:47,528 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 04:05:47,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 11 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 7 states have call predecessors, (28), 9 states have call successors, (28) [2022-11-03 04:05:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 04:05:47,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 04:05:47,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:05:47,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:47,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:47,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 04:05:55,398 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (and (let ((.cse20 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse7 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse8 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) 1 0) 0))) (.cse9 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse10 (= (select |#valid| 1) 1)) (.cse11 (= (select |#valid| 0) 0)) (.cse12 (= (select |#valid| 2) 1)) (.cse13 (= |#NULL.offset| 0)) (.cse14 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse15 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse16 (= (select .cse20 0) 48)) (.cse17 (= (select .cse20 1) 0)) (.cse18 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse19 (< 0 |#StackHeapBarrier|))) (or (let ((.cse2 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 (not (= (ite (= (+ .cse2 .cse3) |ULTIMATE.start_main_~b~0#1|) 1 0) 0)) (not (= (ite (= (+ (* |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|) 1 0) 0)) .cse4 .cse5 .cse6 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse15 (not (= (ite (= (+ (* |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|) (+ .cse2 .cse3 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|))) 1 0) 0)) .cse16 .cse17 .cse18 .cse19)) (and .cse0 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) .cse1 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= |ULTIMATE.start_main_~k~0#1| 0) .cse10 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) 1 0) 0)) .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19)))) (= |#NULL.base| 0)) [2022-11-03 04:05:55,400 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (and (let ((.cse20 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse7 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse8 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) 1 0) 0))) (.cse9 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse10 (= (select |#valid| 1) 1)) (.cse11 (= (select |#valid| 0) 0)) (.cse12 (= (select |#valid| 2) 1)) (.cse13 (= |#NULL.offset| 0)) (.cse14 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse15 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse16 (= (select .cse20 0) 48)) (.cse17 (= (select .cse20 1) 0)) (.cse18 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse19 (< 0 |#StackHeapBarrier|))) (or (let ((.cse2 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 (not (= (ite (= (+ .cse2 .cse3) |ULTIMATE.start_main_~b~0#1|) 1 0) 0)) (not (= (ite (= (+ (* |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|) 1 0) 0)) .cse4 .cse5 .cse6 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse15 (not (= (ite (= (+ (* |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|) (+ .cse2 .cse3 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|))) 1 0) 0)) .cse16 .cse17 .cse18 .cse19)) (and .cse0 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) .cse1 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= |ULTIMATE.start_main_~k~0#1| 0) .cse10 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) 1 0) 0)) .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19)))) (= |#NULL.base| 0)) [2022-11-03 04:05:55,401 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 04:05:55,401 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) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 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))) [2022-11-03 04:05:55,401 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) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) 1 0) 0)) (= (select |#valid| 1) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) 1 0) 0)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 04:05:55,402 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (let ((.cse20 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse7 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse8 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) 1 0) 0))) (.cse9 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse10 (= (select |#valid| 1) 1)) (.cse11 (= (select |#valid| 0) 0)) (.cse12 (= (select |#valid| 2) 1)) (.cse13 (= |#NULL.offset| 0)) (.cse14 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse15 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse16 (= (select .cse20 0) 48)) (.cse17 (= (select .cse20 1) 0)) (.cse18 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse19 (< 0 |#StackHeapBarrier|))) (or (let ((.cse2 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 (not (= (ite (= (+ .cse2 .cse3) |ULTIMATE.start_main_~b~0#1|) 1 0) 0)) (not (= (ite (= (+ (* |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|) 1 0) 0)) .cse4 .cse5 .cse6 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse15 (not (= (ite (= (+ (* |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|) (+ .cse2 .cse3 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|))) 1 0) 0)) .cse16 .cse17 .cse18 .cse19)) (and .cse0 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) .cse1 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= |ULTIMATE.start_main_~k~0#1| 0) .cse10 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) 1 0) 0)) .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19)))) (= |#NULL.base| 0)) [2022-11-03 04:05:55,403 INFO L895 garLoopResultBuilder]: At program point L41-1(lines 39 68) the Hoare annotation is: (let ((.cse21 (select |#memory_int| 1)) (.cse20 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse7 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0)))) (.cse2 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse3 (= 11 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse15 (+ .cse20 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse8 (= (select |#valid| 1) 1)) (.cse9 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) 1 0) 0))) (.cse10 (= (select |#valid| 0) 0)) (.cse11 (= (select |#valid| 2) 1)) (.cse12 (= |#NULL.offset| 0)) (.cse13 (= (select .cse21 0) 48)) (.cse14 (= (+ (* |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|)) (.cse16 (= (select .cse21 1) 0)) (.cse17 (< 0 |#StackHeapBarrier|)) (.cse18 (= |#NULL.base| 0))) (or (and (<= 0 |ULTIMATE.start_main_~b~0#1|) .cse0 .cse1 .cse2 (<= (* 2 |ULTIMATE.start_main_~c~0#1|) 0) .cse3 .cse4 .cse5 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse6) 1 0) 0)) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (= .cse15 0) .cse16 .cse17 .cse18) (let ((.cse19 (+ |ULTIMATE.start_main_~x~0#1| .cse20))) (and .cse0 .cse1 (not (<= |ULTIMATE.start_main_~y~0#1| .cse19)) (= |ULTIMATE.start_main_~b~0#1| .cse19) .cse3 .cse4 .cse5 (<= 0 .cse19) (= |ULTIMATE.start_main_~q~0#1| 1) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse16 .cse17 .cse18)) (and (= |ULTIMATE.start_main_~c~0#1| 0) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse3 .cse4 (= .cse15 |ULTIMATE.start_main_~b~0#1|) .cse5 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) .cse6 .cse8 .cse9 .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 .cse14 .cse16 (= |ULTIMATE.start_main_~s~0#1| 1) .cse17 .cse18)))) [2022-11-03 04:05:55,403 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse3 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse4 (select |#memory_int| 1)) (.cse5 (+ .cse1 .cse2))) (and (= (select |#length| 3) 12) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (or (not (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (< .cse0 (+ |ULTIMATE.start_main_~a~0#1| 1))) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2) .cse3) (< .cse0 (+ |ULTIMATE.start_main_~c~0#1| 1))) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) 1 0) 0)) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse4 0) 48) (= .cse3 |ULTIMATE.start_main_~a~0#1|) (= .cse5 0) (= (select .cse4 1) 0) (or (= .cse5 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0)))) [2022-11-03 04:05:55,403 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 04:05:55,404 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 (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_main_~x~0#1| 1) (= (select |#valid| 1) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) 1 0) 0)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 04:05:55,404 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (let ((.cse20 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse7 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse8 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) 1 0) 0))) (.cse9 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse10 (= (select |#valid| 1) 1)) (.cse11 (= (select |#valid| 0) 0)) (.cse12 (= (select |#valid| 2) 1)) (.cse13 (= |#NULL.offset| 0)) (.cse14 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse15 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse16 (= (select .cse20 0) 48)) (.cse17 (= (select .cse20 1) 0)) (.cse18 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse19 (< 0 |#StackHeapBarrier|))) (or (let ((.cse2 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 (not (= (ite (= (+ .cse2 .cse3) |ULTIMATE.start_main_~b~0#1|) 1 0) 0)) (not (= (ite (= (+ (* |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|) 1 0) 0)) .cse4 .cse5 .cse6 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse15 (not (= (ite (= (+ (* |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|) (+ .cse2 .cse3 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|))) 1 0) 0)) .cse16 .cse17 .cse18 .cse19)) (and .cse0 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) .cse1 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= |ULTIMATE.start_main_~k~0#1| 0) .cse10 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) 1 0) 0)) .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19)))) (= |#NULL.base| 0)) [2022-11-03 04:05:55,405 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2022-11-03 04:05:55,405 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.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|))) (let ((.cse2 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse8 (select |#memory_int| 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|)) (.cse1 (+ (* |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 (+ .cse6 .cse7)) (.cse3 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (= (select |#length| 3) 12) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (or (= .cse0 .cse1) (not (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (< .cse2 (+ |ULTIMATE.start_main_~a~0#1| 1))) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (or (not .cse3) (= (+ .cse4 .cse5 .cse6 .cse7) .cse1) (< .cse2 (+ |ULTIMATE.start_main_~c~0#1| 1))) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) 1 0) 0)) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse8 0) 48) (= .cse1 |ULTIMATE.start_main_~a~0#1|) (= (select .cse8 1) 0) (or (= (+ .cse4 .cse5) .cse1) .cse3) (or (= .cse0 |ULTIMATE.start_main_~b~0#1|) .cse3) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0)))) [2022-11-03 04:05:55,406 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= (select |#length| 3) 12) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (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) (<= |ULTIMATE.start_main_~x~0#1| 1) (= (select |#valid| 1) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) 1 0) 0)) (= (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 .cse0 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|) (= (select .cse0 1) 0) (= |ULTIMATE.start_main_~s~0#1| 1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 04:05:55,406 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= (select |#length| 3) 12) (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) (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) (<= |ULTIMATE.start_main_~x~0#1| 1) (= (select |#valid| 1) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) 1 0) 0)) (= (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 .cse0 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|) (= (select .cse0 1) 0) (= |ULTIMATE.start_main_~s~0#1| 1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-03 04:05:55,406 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-03 04:05:55,407 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))) [2022-11-03 04:05:55,407 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-03 04:05:55,408 INFO L899 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2022-11-03 04:05:55,409 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (and (let ((.cse20 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse7 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse8 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) 1 0) 0))) (.cse9 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse10 (= (select |#valid| 1) 1)) (.cse11 (= (select |#valid| 0) 0)) (.cse12 (= (select |#valid| 2) 1)) (.cse13 (= |#NULL.offset| 0)) (.cse14 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse15 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse16 (= (select .cse20 0) 48)) (.cse17 (= (select .cse20 1) 0)) (.cse18 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse19 (< 0 |#StackHeapBarrier|))) (or (let ((.cse2 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 (not (= (ite (= (+ .cse2 .cse3) |ULTIMATE.start_main_~b~0#1|) 1 0) 0)) (not (= (ite (= (+ (* |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|) 1 0) 0)) .cse4 .cse5 .cse6 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) .cse15 (not (= (ite (= (+ (* |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|) (+ .cse2 .cse3 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|))) 1 0) 0)) .cse16 .cse17 .cse18 .cse19)) (and .cse0 (not (= 0 (ite (<= 1 |ULTIMATE.start_main_~x~0#1|) 1 0))) .cse1 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= |ULTIMATE.start_main_~k~0#1| 0) .cse10 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) 1 0) 0)) .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19)))) (= |#NULL.base| 0)) [2022-11-03 04:05:55,409 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2022-11-03 04:05:55,409 INFO L902 garLoopResultBuilder]: At program point L72(line 72) the Hoare annotation is: true [2022-11-03 04:05:55,409 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-03 04:05:55,410 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-03 04:05:55,410 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-03 04:05:55,410 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-03 04:05:55,411 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-03 04:05:55,411 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-03 04:05:55,411 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-03 04:05:55,411 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-03 04:05:55,416 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:55,419 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:05:55,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:05:55 BoogieIcfgContainer [2022-11-03 04:05:55,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:05:55,448 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:05:55,448 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:05:55,449 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:05:55,449 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:13" (3/4) ... [2022-11-03 04:05:55,456 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 04:05:55,461 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-03 04:05:55,461 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-03 04:05:55,466 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-03 04:05:55,466 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-03 04:05:55,467 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 04:05:55,467 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 04:05:55,527 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 04:05:55,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:05:55,529 INFO L158 Benchmark]: Toolchain (without parser) took 402689.29ms. Allocated memory was 134.2MB in the beginning and 497.0MB in the end (delta: 362.8MB). Free memory was 101.5MB in the beginning and 264.7MB in the end (delta: -163.2MB). Peak memory consumption was 200.1MB. Max. memory is 16.1GB. [2022-11-03 04:05:55,530 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 90.2MB. Free memory was 44.5MB in the beginning and 44.5MB in the end (delta: 35.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:05:55,531 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.16ms. Allocated memory is still 134.2MB. Free memory was 101.3MB in the beginning and 109.8MB in the end (delta: -8.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 04:05:55,534 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.15ms. Allocated memory is still 134.2MB. Free memory was 109.8MB in the beginning and 108.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:05:55,535 INFO L158 Benchmark]: Boogie Preprocessor took 27.86ms. Allocated memory is still 134.2MB. Free memory was 108.4MB in the beginning and 107.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:05:55,535 INFO L158 Benchmark]: RCFGBuilder took 501.71ms. Allocated memory is still 134.2MB. Free memory was 107.0MB in the beginning and 94.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 04:05:55,536 INFO L158 Benchmark]: TraceAbstraction took 401685.08ms. Allocated memory was 134.2MB in the beginning and 497.0MB in the end (delta: 362.8MB). Free memory was 93.7MB in the beginning and 267.9MB in the end (delta: -174.2MB). Peak memory consumption was 289.2MB. Max. memory is 16.1GB. [2022-11-03 04:05:55,536 INFO L158 Benchmark]: Witness Printer took 79.14ms. Allocated memory is still 497.0MB. Free memory was 267.9MB in the beginning and 264.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 04:05:55,538 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 90.2MB. Free memory was 44.5MB in the beginning and 44.5MB in the end (delta: 35.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.16ms. Allocated memory is still 134.2MB. Free memory was 101.3MB in the beginning and 109.8MB in the end (delta: -8.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.15ms. Allocated memory is still 134.2MB. Free memory was 109.8MB in the beginning and 108.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.86ms. Allocated memory is still 134.2MB. Free memory was 108.4MB in the beginning and 107.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 501.71ms. Allocated memory is still 134.2MB. Free memory was 107.0MB in the beginning and 94.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 401685.08ms. Allocated memory was 134.2MB in the beginning and 497.0MB in the end (delta: 362.8MB). Free memory was 93.7MB in the beginning and 267.9MB in the end (delta: -174.2MB). Peak memory consumption was 289.2MB. Max. memory is 16.1GB. * Witness Printer took 79.14ms. Allocated memory is still 497.0MB. Free memory was 267.9MB in the beginning and 264.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. 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: 401.5s, OverallIterations: 9, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 420 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 368 mSDsluCounter, 1180 SdHoareTripleChecker+Invalid, 6.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 913 mSDsCounter, 651 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2585 IncrementalHoareTripleChecker+Invalid, 3236 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 651 mSolverCounterUnsat, 333 mSDtfsCounter, 2585 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1509 GetRequests, 1163 SyntacticMatches, 93 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5366 ImplicationChecksByTransitivity, 345.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=7, InterpolantAutomatonStates: 124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 73 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 95 PreInvPairs, 125 NumberOfFragments, 2855 HoareAnnotationTreeSize, 95 FomulaSimplifications, 267 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 17 FomulaSimplificationsInter, 13158 FormulaSimplificationTreeSizeReductionInter, 7.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 525 NumberOfCodeBlocks, 467 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 975 ConstructedInterpolants, 0 QuantifiedInterpolants, 5532 SizeOfPredicates, 42 NumberOfNonLiveVariables, 1472 ConjunctsInSsa, 175 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 2561/2732 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: 14.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 91, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 42, TOOLS_POST_TIME: 0.4s, TOOLS_POST_CALL_APPLICATIONS: 86, TOOLS_POST_CALL_TIME: 11.1s, TOOLS_POST_RETURN_APPLICATIONS: 62, TOOLS_POST_RETURN_TIME: 1.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 190, TOOLS_QUANTIFIERELIM_TIME: 12.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.6s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 209, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 104, DOMAIN_JOIN_TIME: 1.5s, 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: 91, DOMAIN_ISBOTTOM_TIME: 0.2s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 5.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 5.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 62, 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: 1096, DAG_COMPRESSION_RETAINED_NODES: 209, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((k == 1 && unknown-#length-unknown[3] == 12) && !((if 1 <= y then 1 else 0) == 0)) && !((if s * y + q * x == b then 1 else 0) == 0)) && !((if r * y + p * x == a then 1 else 0) == 0)) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 0 <= c) && r == 0) && !((if 0 <= x && x <= 1 then 1 else 0) == 0)) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && xy == x * y) && b + c == a) && a == x) && !((if xy * q + yy * s + b == s * y + q * x + b * y then 1 else 0) == 0)) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) || ((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && !(0 == (if 1 <= x then 1 else 0))) && !((if 1 <= y then 1 else 0) == 0)) && yy == y * y) && p == 1) && a == c) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && !((if 0 <= x && x <= 1 then 1 else 0) == 0)) && q == 0) && k == 0) && \valid[1] == 1) && !((if 0 <= y && y <= 1 then 1 else 0) == 0)) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && xy == x * y) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && 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 <= b && unknown-#length-unknown[3] == 12) && !(0 == (if 1 <= x then 1 else 0))) && !((if 1 <= y then 1 else 0) == 0)) && 2 * c <= 0) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if 0 <= x && x <= 1 then 1 else 0) == 0)) && b <= c) && \valid[1] == 1) && !((if 0 <= y && y <= 1 then 1 else 0) == 0)) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && s * y + q * x == 0) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((((((unknown-#length-unknown[3] == 12 && !(0 == (if 1 <= x then 1 else 0))) && !(y <= x + s * y)) && b == x + s * y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 0 <= x + s * y) && q == 1) && x <= 1) && b <= c) && \valid[1] == 1) && !((if 0 <= y && y <= 1 then 1 else 0) == 0)) && \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) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((((((c == 0 && unknown-#length-unknown[3] == 12) && !(0 == (if 1 <= x then 1 else 0))) && !((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) && x <= 1) && \valid[1] == 1) && !((if 0 <= y && y <= 1 then 1 else 0) == 0)) && \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) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-11-03 04:05:55,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e4f137-f668-43e2-bb9d-63e59caf9431/bin/utaipan-7li7fVZpFI/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