./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/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_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/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_4d2daf54-e3a0-4925-b9a7-5739973f06e3/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 68bb6d7d6818d105c8d36601291f0fbd6a765091c35c37006c1280fceb3f620a --- 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 02:29:30,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:29:30,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:29:30,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:29:30,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:29:30,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:29:30,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:29:30,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:29:30,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:29:30,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:29:30,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:29:30,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:29:30,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:29:30,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:29:30,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:29:30,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:29:30,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:29:30,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:29:30,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:29:30,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:29:30,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:29:30,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:29:30,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:29:30,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:29:30,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:29:30,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:29:30,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:29:30,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:29:30,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:29:30,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:29:30,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:29:30,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:29:30,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:29:30,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:29:30,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:29:30,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:29:30,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:29:30,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:29:30,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:29:30,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:29:30,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:29:30,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:29:30,654 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:29:30,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:29:30,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:29:30,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:29:30,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:29:30,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:29:30,657 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:29:30,657 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:29:30,657 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:29:30,658 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:29:30,659 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:29:30,659 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:29:30,659 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:29:30,659 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:29:30,659 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:29:30,660 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:29:30,660 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:29:30,660 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:29:30,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:29:30,661 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:29:30,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:29:30,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:29:30,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:29:30,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:29:30,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:29:30,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:29:30,663 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:29:30,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:29:30,663 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:29:30,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:29:30,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:29:30,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:29:30,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:29:30,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:29:30,665 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:29:30,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:29:30,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:29:30,665 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:29:30,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:29:30,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:29:30,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:29:30,666 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_4d2daf54-e3a0-4925-b9a7-5739973f06e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68bb6d7d6818d105c8d36601291f0fbd6a765091c35c37006c1280fceb3f620a [2022-11-03 02:29:30,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:29:30,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:29:30,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:29:30,999 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:29:31,000 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:29:31,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c [2022-11-03 02:29:31,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/data/079d5ddb7/3f0a156f60c343d3a9522fef940c1688/FLAG90b46d271 [2022-11-03 02:29:31,490 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:29:31,491 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c [2022-11-03 02:29:31,499 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/data/079d5ddb7/3f0a156f60c343d3a9522fef940c1688/FLAG90b46d271 [2022-11-03 02:29:31,873 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/data/079d5ddb7/3f0a156f60c343d3a9522fef940c1688 [2022-11-03 02:29:31,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:29:31,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:29:31,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:29:31,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:29:31,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:29:31,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:29:31" (1/1) ... [2022-11-03 02:29:31,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bba67b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:31, skipping insertion in model container [2022-11-03 02:29:31,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:29:31" (1/1) ... [2022-11-03 02:29:31,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:29:31,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:29:32,116 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_4d2daf54-e3a0-4925-b9a7-5739973f06e3/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c[597,610] [2022-11-03 02:29:32,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:29:32,161 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:29:32,178 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_4d2daf54-e3a0-4925-b9a7-5739973f06e3/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c[597,610] [2022-11-03 02:29:32,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:29:32,227 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:29:32,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32 WrapperNode [2022-11-03 02:29:32,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:29:32,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:29:32,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:29:32,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:29:32,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32" (1/1) ... [2022-11-03 02:29:32,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32" (1/1) ... [2022-11-03 02:29:32,272 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-11-03 02:29:32,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:29:32,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:29:32,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:29:32,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:29:32,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32" (1/1) ... [2022-11-03 02:29:32,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32" (1/1) ... [2022-11-03 02:29:32,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32" (1/1) ... [2022-11-03 02:29:32,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32" (1/1) ... [2022-11-03 02:29:32,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32" (1/1) ... [2022-11-03 02:29:32,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32" (1/1) ... [2022-11-03 02:29:32,310 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32" (1/1) ... [2022-11-03 02:29:32,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32" (1/1) ... [2022-11-03 02:29:32,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:29:32,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:29:32,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:29:32,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:29:32,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32" (1/1) ... [2022-11-03 02:29:32,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:29:32,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:32,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:29:32,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:29:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:29:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:29:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:29:32,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:29:32,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:29:32,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:29:32,473 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:29:32,475 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:29:32,720 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:29:32,750 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:29:32,750 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:29:32,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:29:32 BoogieIcfgContainer [2022-11-03 02:29:32,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:29:32,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:29:32,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:29:32,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:29:32,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:29:31" (1/3) ... [2022-11-03 02:29:32,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b215409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:29:32, skipping insertion in model container [2022-11-03 02:29:32,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:32" (2/3) ... [2022-11-03 02:29:32,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b215409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:29:32, skipping insertion in model container [2022-11-03 02:29:32,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:29:32" (3/3) ... [2022-11-03 02:29:32,762 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound20.c [2022-11-03 02:29:32,781 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:29:32,781 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:29:32,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:29:32,838 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;@2d33d7e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:29:32,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:29:32,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:29:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:29:32,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:32,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:32,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:32,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:32,856 INFO L85 PathProgramCache]: Analyzing trace with hash -26250642, now seen corresponding path program 1 times [2022-11-03 02:29:32,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:32,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504976578] [2022-11-03 02:29:32,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:32,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:32,972 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:29:32,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100288745] [2022-11-03 02:29:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:32,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:32,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:32,977 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:32,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:29:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:33,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:29:33,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:29:33,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:33,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:33,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504976578] [2022-11-03 02:29:33,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:29:33,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100288745] [2022-11-03 02:29:33,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100288745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:33,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:33,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:29:33,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773943463] [2022-11-03 02:29:33,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:33,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:29:33,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:33,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:29:33,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:29:33,337 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:29:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:33,523 INFO L93 Difference]: Finished difference Result 42 states and 58 transitions. [2022-11-03 02:29:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:29:33,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 02:29:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:33,541 INFO L225 Difference]: With dead ends: 42 [2022-11-03 02:29:33,541 INFO L226 Difference]: Without dead ends: 21 [2022-11-03 02:29:33,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:29:33,555 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:33,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 37 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:29:33,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-03 02:29:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-03 02:29:33,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:29:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-03 02:29:33,601 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 7 [2022-11-03 02:29:33,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:33,602 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-03 02:29:33,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:29:33,604 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-03 02:29:33,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-03 02:29:33,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:33,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:33,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:33,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 02:29:33,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:33,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:33,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1971909778, now seen corresponding path program 1 times [2022-11-03 02:29:33,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:33,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429022860] [2022-11-03 02:29:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:33,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:33,837 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:29:33,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111734461] [2022-11-03 02:29:33,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:33,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:33,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:33,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:33,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:29:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:33,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:29:33,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:29:34,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:29:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:29:34,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:34,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429022860] [2022-11-03 02:29:34,681 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:29:34,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111734461] [2022-11-03 02:29:34,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111734461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:29:34,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1934717616] [2022-11-03 02:29:34,702 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 02:29:34,703 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:29:34,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:29:34,712 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:29:34,713 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:29:35,398 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2022-11-03 02:29:35,455 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:29:35,925 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '224#(and (< ~counter~0 21) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:29:35,926 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:29:35,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:29:35,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2022-11-03 02:29:35,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844465042] [2022-11-03 02:29:35,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:29:35,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:29:35,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:35,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:29:35,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:29:35,929 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:29:36,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:36,310 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-11-03 02:29:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:29:36,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2022-11-03 02:29:36,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:36,312 INFO L225 Difference]: With dead ends: 35 [2022-11-03 02:29:36,312 INFO L226 Difference]: Without dead ends: 31 [2022-11-03 02:29:36,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:29:36,314 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:36,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 40 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:29:36,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-03 02:29:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2022-11-03 02:29:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:29:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-03 02:29:36,328 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2022-11-03 02:29:36,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:36,328 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-03 02:29:36,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:29:36,329 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-03 02:29:36,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 02:29:36,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:36,332 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:36,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:36,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:36,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:36,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:36,542 INFO L85 PathProgramCache]: Analyzing trace with hash 927087193, now seen corresponding path program 1 times [2022-11-03 02:29:36,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:36,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980937716] [2022-11-03 02:29:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:36,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:36,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:29:36,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1973765502] [2022-11-03 02:29:36,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:36,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:36,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:36,559 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:36,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:29:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:36,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:29:36,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:29:36,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:29:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:29:36,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:36,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980937716] [2022-11-03 02:29:36,696 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:29:36,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973765502] [2022-11-03 02:29:36,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973765502] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:29:36,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1769596553] [2022-11-03 02:29:36,709 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-03 02:29:36,713 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:29:36,714 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:29:36,726 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:29:36,726 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:29:37,348 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 80 for LOIs [2022-11-03 02:29:37,523 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:29:38,495 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '415#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-03 02:29:38,495 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:29:38,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:29:38,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-03 02:29:38,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785226204] [2022-11-03 02:29:38,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:29:38,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:29:38,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:38,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:29:38,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:29:38,497 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:29:38,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:38,615 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2022-11-03 02:29:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:29:38,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-03 02:29:38,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:38,620 INFO L225 Difference]: With dead ends: 59 [2022-11-03 02:29:38,620 INFO L226 Difference]: Without dead ends: 53 [2022-11-03 02:29:38,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:29:38,625 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:38,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 59 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:29:38,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-03 02:29:38,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2022-11-03 02:29:38,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:29:38,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-11-03 02:29:38,642 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 16 [2022-11-03 02:29:38,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:38,642 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-11-03 02:29:38,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:29:38,643 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-11-03 02:29:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 02:29:38,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:38,644 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:38,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:38,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:38,869 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:38,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:38,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1587911935, now seen corresponding path program 1 times [2022-11-03 02:29:38,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:38,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387930902] [2022-11-03 02:29:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:38,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:38,881 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:29:38,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138911576] [2022-11-03 02:29:38,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:38,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:38,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:38,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:38,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:29:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:38,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:29:38,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:29:39,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:29:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:29:39,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:39,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387930902] [2022-11-03 02:29:39,994 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:29:39,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138911576] [2022-11-03 02:29:39,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138911576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:29:39,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [947590595] [2022-11-03 02:29:40,000 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-03 02:29:40,000 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:29:40,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:29:40,001 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:29:40,001 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:29:40,538 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 86 for LOIs [2022-11-03 02:29:40,675 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:29:57,403 WARN L234 SmtUtils]: Spent 10.88s on a formula simplification. DAG size of input: 88 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:07,363 WARN L234 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 90 DAG size of output: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:15,786 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '711#(and (< ~counter~0 21) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:30:15,787 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:30:15,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:30:15,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2022-11-03 02:30:15,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909129960] [2022-11-03 02:30:15,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:30:15,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 02:30:15,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:15,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 02:30:15,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=651, Unknown=6, NotChecked=0, Total=756 [2022-11-03 02:30:15,790 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 18 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:30:18,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:18,181 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2022-11-03 02:30:18,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:30:18,182 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2022-11-03 02:30:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:18,183 INFO L225 Difference]: With dead ends: 49 [2022-11-03 02:30:18,184 INFO L226 Difference]: Without dead ends: 41 [2022-11-03 02:30:18,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=184, Invalid=1142, Unknown=6, NotChecked=0, Total=1332 [2022-11-03 02:30:18,186 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:18,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 46 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:30:18,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-03 02:30:18,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-03 02:30:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:30:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2022-11-03 02:30:18,204 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 22 [2022-11-03 02:30:18,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:18,204 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2022-11-03 02:30:18,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 02:30:18,205 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2022-11-03 02:30:18,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 02:30:18,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:18,206 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:18,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:30:18,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:18,422 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:18,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:18,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1355163283, now seen corresponding path program 2 times [2022-11-03 02:30:18,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:18,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715023653] [2022-11-03 02:30:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:18,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:18,433 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:30:18,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746379361] [2022-11-03 02:30:18,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:30:18,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:18,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:18,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:30:18,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:30:18,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-03 02:30:18,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:30:18,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:30:18,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:30:18,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:30:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:30:19,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:19,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715023653] [2022-11-03 02:30:19,489 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:30:19,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746379361] [2022-11-03 02:30:19,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746379361] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:30:19,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [220011713] [2022-11-03 02:30:19,492 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-03 02:30:19,492 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:30:19,492 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:30:19,493 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:30:19,493 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:30:19,979 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 80 for LOIs [2022-11-03 02:30:20,119 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:30:22,866 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1110#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:30:22,866 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:30:22,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:30:22,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-03 02:30:22,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181846728] [2022-11-03 02:30:22,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:30:22,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:30:22,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:22,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:30:22,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:30:22,869 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-03 02:30:23,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:23,826 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2022-11-03 02:30:23,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 02:30:23,827 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 40 [2022-11-03 02:30:23,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:23,828 INFO L225 Difference]: With dead ends: 95 [2022-11-03 02:30:23,829 INFO L226 Difference]: Without dead ends: 89 [2022-11-03 02:30:23,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 02:30:23,831 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 83 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:23,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 92 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:30:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-03 02:30:23,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-03 02:30:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 02:30:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2022-11-03 02:30:23,863 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 40 [2022-11-03 02:30:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:23,864 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2022-11-03 02:30:23,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-03 02:30:23,865 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2022-11-03 02:30:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 02:30:23,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:23,867 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:23,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:30:24,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:24,090 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:24,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:24,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1093149589, now seen corresponding path program 3 times [2022-11-03 02:30:24,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:24,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602742651] [2022-11-03 02:30:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:24,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:24,119 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:30:24,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538191598] [2022-11-03 02:30:24,120 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:30:24,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:24,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:24,124 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:30:24,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:30:24,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:30:24,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:30:24,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:30:24,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:30:25,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:30:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-03 02:30:26,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:26,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602742651] [2022-11-03 02:30:26,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:30:26,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538191598] [2022-11-03 02:30:26,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538191598] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:30:26,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [702157910] [2022-11-03 02:30:26,753 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-03 02:30:26,753 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:30:26,754 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:30:26,754 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:30:26,754 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:30:27,242 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 80 for LOIs [2022-11-03 02:30:27,385 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:30:30,912 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1936#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:30:30,913 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:30:30,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:30:30,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2022-11-03 02:30:30,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628560438] [2022-11-03 02:30:30,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:30:30,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:30:30,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:30,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:30:30,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=854, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 02:30:30,916 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 20 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-11-03 02:30:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:33,134 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2022-11-03 02:30:33,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-03 02:30:33,135 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 20 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 88 [2022-11-03 02:30:33,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:33,137 INFO L225 Difference]: With dead ends: 175 [2022-11-03 02:30:33,137 INFO L226 Difference]: Without dead ends: 169 [2022-11-03 02:30:33,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 228 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=697, Invalid=2059, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 02:30:33,140 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 180 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:33,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 176 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:30:33,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-03 02:30:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-03 02:30:33,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 127 states have (on average 1.0078740157480315) internal successors, (128), 127 states have internal predecessors, (128), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-03 02:30:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2022-11-03 02:30:33,192 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 88 [2022-11-03 02:30:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:33,192 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2022-11-03 02:30:33,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.166666666666667) internal successors, (100), 24 states have internal predecessors, (100), 20 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-11-03 02:30:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2022-11-03 02:30:33,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-03 02:30:33,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:33,196 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:33,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:30:33,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:33,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:33,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:33,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1281237203, now seen corresponding path program 4 times [2022-11-03 02:30:33,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:33,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638621982] [2022-11-03 02:30:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:33,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:33,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:30:33,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047133220] [2022-11-03 02:30:33,418 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:30:33,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:33,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:33,419 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:30:33,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:30:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:30:33,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:30:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:30:34,254 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:30:34,255 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:30:34,256 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:30:34,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:30:34,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:34,470 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-11-03 02:30:34,475 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:30:34,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:30:34 BoogieIcfgContainer [2022-11-03 02:30:34,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:30:34,601 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:30:34,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:30:34,601 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:30:34,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:29:32" (3/4) ... [2022-11-03 02:30:34,608 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 02:30:34,752 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:30:34,753 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:30:34,753 INFO L158 Benchmark]: Toolchain (without parser) took 62876.68ms. Allocated memory was 113.2MB in the beginning and 169.9MB in the end (delta: 56.6MB). Free memory was 78.7MB in the beginning and 51.2MB in the end (delta: 27.6MB). Peak memory consumption was 84.0MB. Max. memory is 16.1GB. [2022-11-03 02:30:34,754 INFO L158 Benchmark]: CDTParser took 12.76ms. Allocated memory was 81.8MB in the beginning and 113.2MB in the end (delta: 31.5MB). Free memory was 36.2MB in the beginning and 85.2MB in the end (delta: -48.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-11-03 02:30:34,754 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.15ms. Allocated memory is still 113.2MB. Free memory was 78.5MB in the beginning and 87.7MB in the end (delta: -9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:30:34,755 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.70ms. Allocated memory is still 113.2MB. Free memory was 87.7MB in the beginning and 85.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:30:34,755 INFO L158 Benchmark]: Boogie Preprocessor took 43.90ms. Allocated memory is still 113.2MB. Free memory was 85.9MB in the beginning and 85.0MB in the end (delta: 883.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:30:34,755 INFO L158 Benchmark]: RCFGBuilder took 434.62ms. Allocated memory is still 113.2MB. Free memory was 85.0MB in the beginning and 72.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:30:34,756 INFO L158 Benchmark]: TraceAbstraction took 61845.38ms. Allocated memory was 113.2MB in the beginning and 169.9MB in the end (delta: 56.6MB). Free memory was 71.8MB in the beginning and 59.5MB in the end (delta: 12.3MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2022-11-03 02:30:34,756 INFO L158 Benchmark]: Witness Printer took 151.94ms. Allocated memory is still 169.9MB. Free memory was 59.5MB in the beginning and 51.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 02:30:34,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 12.76ms. Allocated memory was 81.8MB in the beginning and 113.2MB in the end (delta: 31.5MB). Free memory was 36.2MB in the beginning and 85.2MB in the end (delta: -48.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 352.15ms. Allocated memory is still 113.2MB. Free memory was 78.5MB in the beginning and 87.7MB in the end (delta: -9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.70ms. Allocated memory is still 113.2MB. Free memory was 87.7MB in the beginning and 85.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.90ms. Allocated memory is still 113.2MB. Free memory was 85.9MB in the beginning and 85.0MB in the end (delta: 883.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 434.62ms. Allocated memory is still 113.2MB. Free memory was 85.0MB in the beginning and 72.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 61845.38ms. Allocated memory was 113.2MB in the beginning and 169.9MB in the end (delta: 56.6MB). Free memory was 71.8MB in the beginning and 59.5MB in the end (delta: 12.3MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. * Witness Printer took 151.94ms. Allocated memory is still 169.9MB. Free memory was 59.5MB in the beginning and 51.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0, v=991146297, x=0, X=2147483647, y=0, Y=1569314972] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=991146297, X=2147483647, x=0, Y=1569314972, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=991146297, x=0, X=2147483647, x=0, x=0, Y=1569314972, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=1, v=991146297, x=0, x=0, X=2147483647, x=0, y=0, Y=1569314972] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=1, v=-165191053, X=2147483647, x=0, x=1, x=0, y=1, Y=1569314972, y++=44] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-165191053, X=2147483647, x=1, x=0, x=0, Y=1569314972, y=1, y++=44] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=2, v=-165191053, x=1569314972, x=1, X=2147483647, x=2147483647, Y=1569314972, y=1, y++=44] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=2, v=-165191053, x=1, x=1569314972, x=2147483647, X=2147483647, Y=1569314972, y=1, y++=44] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=2, v=2973438891, x=2, X=2147483647, x=2147483647, x=1569314972, Y=1569314972, y=1, y++=44] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=2973438891, x=2, X=2147483647, x=2147483647, x=1569314972, Y=1569314972, y=1, y++=44] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=3, v=2973438891, x=2147483647, X=2147483647, x=2, x=3138629944, y=1, Y=1569314972, y++=44] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=3] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=3, v=2973438891, x=2, x=3138629944, X=2147483647, x=2147483647, y=1, Y=1569314972, y++=44] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=3, v=1817101541, X=2147483647, x=3138629944, x=2147483647, x=3, y=2, Y=1569314972, y++=0] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=1817101541, x=3138629944, X=2147483647, x=2147483647, x=3, y=2, Y=1569314972, y++=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=1817101541, X=2147483647, x=4294967294, x=4707944916, x=3, y=2, Y=1569314972, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=4] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=4, v=1817101541, x=4294967294, x=3, X=2147483647, x=4707944916, Y=1569314972, y=2, y++=0] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=4, v=660764191, X=2147483647, x=4, x=4294967294, x=4707944916, Y=1569314972, y=3, y++=0] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=660764191, x=4, x=4294967294, x=4707944916, X=2147483647, y=3, Y=1569314972, y++=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=5, v=660764191, X=2147483647, x=6277259888, x=4, x=6442450941, Y=1569314972, y=3, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=5] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=5, v=660764191, x=6277259888, x=4, x=6442450941, X=2147483647, y=3, Y=1569314972, y++=0] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=5, v=-495573159, x=5, X=2147483647, x=6277259888, x=6442450941, y=4, Y=1569314972, y++=76] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-495573159, x=5, x=6277259888, X=2147483647, x=6442450941, Y=1569314972, y=4, y++=76] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=6, v=-495573159, x=7846574860, x=8589934588, X=2147483647, x=5, y=4, Y=1569314972, y++=76] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=6] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=6, v=-495573159, x=8589934588, x=7846574860, x=5, X=2147483647, Y=1569314972, y=4, y++=76] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=6, v=2643056785, x=8589934588, x=6, X=2147483647, x=7846574860, y=4, Y=1569314972, y++=76] [L31] EXPR counter++ VAL [counter=7, counter++=6, v=2643056785, x=8589934588, X=2147483647, x=7846574860, x=6, Y=1569314972, y=4, y++=76] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=7, v=2643056785, x=9415889832, X=2147483647, x=8589934588, x=6, Y=1569314972, y=4, y++=76] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=7] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=7, v=2643056785, x=9415889832, x=6, x=8589934588, X=2147483647, y=4, Y=1569314972, y++=76] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=7, v=1486719435, x=8589934588, X=2147483647, x=7, x=9415889832, y=5, Y=1569314972, y++=0] [L31] EXPR counter++ VAL [counter=8, counter++=7, v=1486719435, x=7, x=8589934588, X=2147483647, x=9415889832, y=5, Y=1569314972, y++=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=8, v=1486719435, x=7, x=10737418235, x=10985204804, X=2147483647, y=5, Y=1569314972, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=8] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=8, v=1486719435, x=10985204804, x=7, x=10737418235, X=2147483647, y=5, Y=1569314972, y++=0] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=8, v=330382085, X=2147483647, x=10985204804, x=8, x=10737418235, Y=1569314972, y=6, y++=0] [L31] EXPR counter++ VAL [counter=9, counter++=8, v=330382085, X=2147483647, x=10737418235, x=10985204804, x=8, y=6, Y=1569314972, y++=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=9, v=330382085, x=12554519776, x=12884901882, x=8, X=2147483647, y=6, Y=1569314972, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=9] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=9, v=330382085, x=12884901882, X=2147483647, x=8, x=12554519776, Y=1569314972, y=6, y++=0] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=9, v=-825955265, x=9, x=12554519776, X=2147483647, x=12884901882, Y=1569314972, y=7, y++=109] [L31] EXPR counter++ VAL [counter=10, counter++=9, v=-825955265, x=12884901882, x=12554519776, x=9, X=2147483647, y=7, Y=1569314972, y++=109] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=10, v=-825955265, x=9, x=14123834748, x=15032385529, X=2147483647, y=7, Y=1569314972, y++=109] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=10] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=10, v=-825955265, x=14123834748, x=9, X=2147483647, x=15032385529, Y=1569314972, y=7, y++=109] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=10, v=2312674679, X=2147483647, x=15032385529, x=10, x=14123834748, y=7, Y=1569314972, y++=109] [L31] EXPR counter++ VAL [counter=11, counter++=10, v=2312674679, x=10, x=15032385529, x=14123834748, X=2147483647, y=7, Y=1569314972, y++=109] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=11, v=2312674679, X=2147483647, x=15032385529, x=10, x=15693149720, y=7, Y=1569314972, y++=109] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=11] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=11, v=2312674679, x=10, x=15693149720, x=15032385529, X=2147483647, y=7, Y=1569314972, y++=109] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=11, v=1156337329, X=2147483647, x=15032385529, x=15693149720, x=11, y=8, Y=1569314972, y++=0] [L31] EXPR counter++ VAL [counter=12, counter++=11, v=1156337329, x=15693149720, x=15032385529, x=11, X=2147483647, y=8, Y=1569314972, y++=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=12, v=1156337329, x=17262464692, x=11, X=2147483647, x=17179869176, Y=1569314972, y=8, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=12] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=12] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=12, v=1156337329, x=11, x=17262464692, X=2147483647, x=17179869176, Y=1569314972, y=8, y++=0] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=12, v=-21, x=17179869176, X=2147483647, x=17262464692, x=12, y=9, Y=1569314972, y++=134] [L31] EXPR counter++ VAL [counter=13, counter++=12, v=-21, x=17179869176, x=12, X=2147483647, x=17262464692, Y=1569314972, y=9, y++=134] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=13, v=-21, x=19327352823, x=18831779664, x=12, X=2147483647, y=9, Y=1569314972, y++=134] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=13] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=13] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=13, v=-21, X=2147483647, x=12, x=19327352823, x=18831779664, y=9, Y=1569314972, y++=134] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=13, v=3138629923, x=18831779664, x=13, x=19327352823, X=2147483647, Y=1569314972, y=9, y++=134] [L31] EXPR counter++ VAL [counter=14, counter++=13, v=3138629923, X=2147483647, x=19327352823, x=18831779664, x=13, y=9, Y=1569314972, y++=134] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=14, v=3138629923, x=19327352823, x=20401094636, x=13, X=2147483647, Y=1569314972, y=9, y++=134] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=14] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=14] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=14, v=3138629923, x=20401094636, x=13, X=2147483647, x=19327352823, y=9, Y=1569314972, y++=134] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=14, v=1982292573, x=19327352823, x=14, x=20401094636, X=2147483647, Y=1569314972, y=10, y++=0] [L31] EXPR counter++ VAL [counter=15, counter++=14, v=1982292573, X=2147483647, x=20401094636, x=19327352823, x=14, y=10, Y=1569314972, y++=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=15, v=1982292573, X=2147483647, x=21474836470, x=21970409608, x=14, y=10, Y=1569314972, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=15] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=15] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=15, v=1982292573, x=14, x=21474836470, x=21970409608, X=2147483647, y=10, Y=1569314972, y++=0] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=15, v=825955223, x=15, X=2147483647, x=21474836470, x=21970409608, y=11, Y=1569314972, y++=0] [L31] EXPR counter++ VAL [counter=16, counter++=15, v=825955223, x=15, x=21970409608, X=2147483647, x=21474836470, y=11, Y=1569314972, y++=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=16, v=825955223, X=2147483647, x=23622320117, x=23539724580, x=15, y=11, Y=1569314972, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=16] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=16] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=16, v=825955223, x=23539724580, X=2147483647, x=23622320117, x=15, Y=1569314972, y=11, y++=0] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=16, v=-330382127, x=23622320117, x=16, x=23539724580, X=2147483647, y=12, Y=1569314972, y++=165] [L31] EXPR counter++ VAL [counter=17, counter++=16, v=-330382127, x=23539724580, x=23622320117, x=16, X=2147483647, y=12, Y=1569314972, y++=165] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=17, v=-330382127, x=25769803764, X=2147483647, x=25109039552, x=16, y=12, Y=1569314972, y++=165] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=17] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=17] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=17, v=-330382127, X=2147483647, x=16, x=25109039552, x=25769803764, y=12, Y=1569314972, y++=165] [L35] COND FALSE !(!(x <= X)) [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y [L45] x++ VAL [counter=17, v=2808247817, x=25109039552, x=17, X=2147483647, x=25769803764, Y=1569314972, y=12, y++=165] [L31] EXPR counter++ VAL [counter=18, counter++=17, v=2808247817, X=2147483647, x=25109039552, x=25769803764, x=17, Y=1569314972, y=12, y++=165] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=18, v=2808247817, x=17, x=26678354524, X=2147483647, x=25769803764, Y=1569314972, y=12, y++=165] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=18] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=18] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=18, v=2808247817, x=17, x=25769803764, x=26678354524, X=2147483647, Y=1569314972, y=12, y++=165] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=18, v=1651910467, x=26678354524, X=2147483647, x=25769803764, x=18, Y=1569314972, y=13, y++=0] [L31] EXPR counter++ VAL [counter=19, counter++=18, v=1651910467, x=26678354524, x=18, x=25769803764, X=2147483647, Y=1569314972, y=13, y++=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=19, v=1651910467, x=28247669496, x=18, x=27917287411, X=2147483647, y=13, Y=1569314972, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=19] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=19] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=19, v=1651910467, x=28247669496, x=18, x=27917287411, X=2147483647, y=13, Y=1569314972, y++=0] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=19, v=495573117, x=19, X=2147483647, x=27917287411, x=28247669496, y=14, Y=1569314972, y++=0] [L31] EXPR counter++ VAL [counter=20, counter++=19, v=495573117, X=2147483647, x=28247669496, x=19, x=27917287411, y=14, Y=1569314972, y++=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=20, v=495573117, x=29816984468, x=19, X=2147483647, x=30064771058, Y=1569314972, y=14, y++=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=20] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=20] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=20, v=495573117, x=30064771058, x=19, x=29816984468, X=2147483647, y=14, Y=1569314972, y++=0] [L35] COND FALSE !(!(x <= X)) [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ [L45] x++ VAL [counter=20, v=-660764233, X=2147483647, x=30064771058, x=20, x=29816984468, y=15, Y=1569314972, y++=0] [L31] EXPR counter++ VAL [counter=21, counter++=20, v=-660764233, x=30064771058, x=20, X=2147483647, x=29816984468, y=15, Y=1569314972, y++=0] [L31] COND FALSE !(counter++<20) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=21, v=-660764233, x=20, x=300, X=2147483647, x=31386299440, Y=1569314972, y=15, y++=0] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=21] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=21] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 61.7s, OverallIterations: 7, TraceHistogramMax: 21, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 350 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 350 mSDsluCounter, 450 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 411 mSDsCounter, 133 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 532 IncrementalHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 133 mSolverCounterUnsat, 88 mSDtfsCounter, 532 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 585 GetRequests, 418 SyntacticMatches, 6 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 49.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=6, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 358 ConstructedInterpolants, 0 QuantifiedInterpolants, 1593 SizeOfPredicates, 31 NumberOfNonLiveVariables, 718 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 288/970 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-03 02:30:34,977 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-03 02:30:35,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d2daf54-e3a0-4925-b9a7-5739973f06e3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE