./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/mcmillan2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/mcmillan2006.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW --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 45cd9f1eda35cecb580d3b7fe5199506be9e5041f2297c1c3e22e0a862fa68be --- 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-4e7fbc6 [2022-11-23 14:36:04,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:36:04,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:36:04,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:36:04,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:36:04,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:36:04,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:36:04,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:36:04,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:36:04,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:36:04,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:36:04,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:36:04,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:36:04,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:36:04,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:36:04,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:36:04,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:36:04,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:36:04,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:36:04,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:36:04,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:36:04,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:36:04,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:36:04,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:36:04,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:36:04,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:36:04,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:36:04,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:36:04,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:36:04,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:36:04,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:36:04,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:36:04,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:36:04,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:36:04,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:36:04,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:36:04,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:36:04,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:36:04,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:36:04,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:36:04,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:36:04,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:36:04,453 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:36:04,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:36:04,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:36:04,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:36:04,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:36:04,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:36:04,457 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:36:04,457 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:36:04,457 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:36:04,457 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:36:04,459 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:36:04,459 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:36:04,459 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:36:04,460 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:36:04,460 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:36:04,460 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:36:04,461 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:36:04,461 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:36:04,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:36:04,462 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:36:04,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:36:04,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:36:04,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:36:04,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:36:04,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:36:04,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:36:04,464 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:36:04,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:36:04,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:36:04,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:36:04,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:36:04,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:36:04,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:36:04,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:36:04,467 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:36:04,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:36:04,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:36:04,468 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:36:04,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:36:04,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:36:04,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:36:04,470 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_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45cd9f1eda35cecb580d3b7fe5199506be9e5041f2297c1c3e22e0a862fa68be [2022-11-23 14:36:04,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:36:04,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:36:04,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:36:04,849 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:36:04,849 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:36:04,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/loop-lit/mcmillan2006.i [2022-11-23 14:36:08,379 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:36:08,619 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:36:08,620 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/sv-benchmarks/c/loop-lit/mcmillan2006.i [2022-11-23 14:36:08,628 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/data/438e253d2/b8c156784f394e9ba81f7e421ad8e4cc/FLAGd093f3d1f [2022-11-23 14:36:08,646 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/data/438e253d2/b8c156784f394e9ba81f7e421ad8e4cc [2022-11-23 14:36:08,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:36:08,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:36:08,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:36:08,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:36:08,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:36:08,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:08,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf4a951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08, skipping insertion in model container [2022-11-23 14:36:08,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:08,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:36:08,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:36:08,879 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/sv-benchmarks/c/loop-lit/mcmillan2006.i[1009,1022] [2022-11-23 14:36:08,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:36:08,907 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:36:08,926 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/sv-benchmarks/c/loop-lit/mcmillan2006.i[1009,1022] [2022-11-23 14:36:08,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:36:08,958 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:36:08,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08 WrapperNode [2022-11-23 14:36:08,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:36:08,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:36:08,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:36:08,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:36:08,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:08,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:09,009 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2022-11-23 14:36:09,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:36:09,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:36:09,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:36:09,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:36:09,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:09,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:09,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:09,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:09,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:09,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:09,060 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:09,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:09,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:36:09,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:36:09,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:36:09,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:36:09,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08" (1/1) ... [2022-11-23 14:36:09,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:36:09,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:09,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:36:09,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:36:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:36:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:36:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:36:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:36:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:36:09,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:36:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:36:09,285 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:36:09,287 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:36:09,499 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:36:09,532 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:36:09,535 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 14:36:09,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:09 BoogieIcfgContainer [2022-11-23 14:36:09,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:36:09,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:36:09,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:36:09,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:36:09,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:36:08" (1/3) ... [2022-11-23 14:36:09,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4c02b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:09, skipping insertion in model container [2022-11-23 14:36:09,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:08" (2/3) ... [2022-11-23 14:36:09,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4c02b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:09, skipping insertion in model container [2022-11-23 14:36:09,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:09" (3/3) ... [2022-11-23 14:36:09,559 INFO L112 eAbstractionObserver]: Analyzing ICFG mcmillan2006.i [2022-11-23 14:36:09,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:36:09,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:36:09,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:36:09,689 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;@732f899e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:36:09,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:36:09,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:09,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:36:09,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:09,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:36:09,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:09,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:09,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1910556134, now seen corresponding path program 1 times [2022-11-23 14:36:09,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:09,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800178175] [2022-11-23 14:36:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:09,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:10,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:10,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800178175] [2022-11-23 14:36:10,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800178175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:36:10,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:36:10,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:36:10,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541696988] [2022-11-23 14:36:10,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:36:10,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:36:10,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:10,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:36:10,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:36:10,249 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:10,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:10,330 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2022-11-23 14:36:10,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:36:10,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:36:10,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:10,342 INFO L225 Difference]: With dead ends: 21 [2022-11-23 14:36:10,342 INFO L226 Difference]: Without dead ends: 9 [2022-11-23 14:36:10,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:36:10,350 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:10,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:36:10,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-23 14:36:10,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-23 14:36:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-23 14:36:10,396 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-11-23 14:36:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:10,398 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-23 14:36:10,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-23 14:36:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:36:10,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:10,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:36:10,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:36:10,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:10,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:10,404 INFO L85 PathProgramCache]: Analyzing trace with hash 896668580, now seen corresponding path program 1 times [2022-11-23 14:36:10,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:10,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72583638] [2022-11-23 14:36:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:10,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:10,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:10,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72583638] [2022-11-23 14:36:10,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72583638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:36:10,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923350552] [2022-11-23 14:36:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:10,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:10,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:10,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:36:11,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:36:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:11,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 14:36:11,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:36:11,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-11-23 14:36:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:11,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:36:11,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-23 14:36:11,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-23 14:36:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:11,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923350552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:36:11,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1116301006] [2022-11-23 14:36:11,344 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-23 14:36:11,345 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:36:11,349 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:36:11,356 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:36:11,357 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:36:11,465 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-23 14:36:11,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-23 14:36:11,537 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 14:36:11,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-23 14:36:11,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-23 14:36:11,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:36:11,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:36:11,872 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-23 14:36:11,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 198 treesize of output 195 [2022-11-23 14:36:12,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:36:12,102 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:36:12,644 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '109#(and (= |ULTIMATE.start_main_~i~1#1| 0) (< |ULTIMATE.start_main_~i~1#1| |ULTIMATE.start_main_~n~0#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~x~0#1.offset|)) |ULTIMATE.start_main_#t~mem5#1|) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_main_~n~0#1| 1000) (= (ite (= |ULTIMATE.start_main_#t~mem5#1| 0) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:36:12,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:36:12,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:36:12,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-11-23 14:36:12,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846479739] [2022-11-23 14:36:12,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:36:12,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:36:12,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:12,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:36:12,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:36:12,648 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:12,807 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-11-23 14:36:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:36:12,808 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 14:36:12,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:12,809 INFO L225 Difference]: With dead ends: 15 [2022-11-23 14:36:12,809 INFO L226 Difference]: Without dead ends: 13 [2022-11-23 14:36:12,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:36:12,819 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 23 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:12,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:36:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-23 14:36:12,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2022-11-23 14:36:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:12,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-23 14:36:12,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2022-11-23 14:36:12,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:12,827 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-23 14:36:12,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:12,828 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-23 14:36:12,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:36:12,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:12,829 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:36:12,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:36:13,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 14:36:13,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:13,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:13,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2037761393, now seen corresponding path program 1 times [2022-11-23 14:36:13,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:13,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497180649] [2022-11-23 14:36:13,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:13,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:13,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:13,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497180649] [2022-11-23 14:36:13,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497180649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:36:13,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854881645] [2022-11-23 14:36:13,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:13,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:13,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:13,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:36:13,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:36:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:13,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:36:13,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:36:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:13,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:36:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:13,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854881645] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:36:13,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [405864904] [2022-11-23 14:36:13,524 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:36:13,524 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:36:13,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:36:13,525 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:36:13,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:36:13,617 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 14:36:13,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-23 14:36:13,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-23 14:36:13,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:36:13,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:36:13,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:36:13,800 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-23 14:36:13,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 196 treesize of output 199 [2022-11-23 14:36:13,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:36:14,095 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:36:14,601 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '222#(and (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~x~0#1.offset|) (< |ULTIMATE.start_main_~i~1#1| |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~x~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~x~0#1.offset|)) |ULTIMATE.start_main_#t~mem5#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_main_~n~0#1| 1000) (= (ite (= |ULTIMATE.start_main_#t~mem5#1| 0) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:36:14,601 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:36:14,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:36:14,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-11-23 14:36:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493115241] [2022-11-23 14:36:14,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:36:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:36:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:36:14,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:36:14,604 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:14,683 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-11-23 14:36:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:36:14,684 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-23 14:36:14,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:14,685 INFO L225 Difference]: With dead ends: 21 [2022-11-23 14:36:14,685 INFO L226 Difference]: Without dead ends: 12 [2022-11-23 14:36:14,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:36:14,692 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:14,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 19 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:36:14,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-23 14:36:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-23 14:36:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-11-23 14:36:14,702 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2022-11-23 14:36:14,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:14,702 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-11-23 14:36:14,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-11-23 14:36:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:36:14,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:14,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:36:14,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 14:36:14,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:14,910 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:14,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:14,911 INFO L85 PathProgramCache]: Analyzing trace with hash 778125081, now seen corresponding path program 2 times [2022-11-23 14:36:14,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:14,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660668897] [2022-11-23 14:36:14,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:15,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:15,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660668897] [2022-11-23 14:36:15,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660668897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:36:15,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777889673] [2022-11-23 14:36:15,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:36:15,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:15,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:15,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:36:15,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:36:15,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 14:36:15,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:36:15,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-23 14:36:15,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:36:15,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 14:36:15,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:36:15,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-23 14:36:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:15,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:36:15,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2022-11-23 14:36:15,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:36:15,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 63 [2022-11-23 14:36:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:15,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777889673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:36:15,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [585490136] [2022-11-23 14:36:15,744 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:36:15,745 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:36:15,745 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:36:15,745 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:36:15,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:36:15,814 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-23 14:36:15,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-23 14:36:15,875 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 14:36:15,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-23 14:36:15,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-23 14:36:15,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:36:15,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:36:16,000 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-23 14:36:16,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 198 treesize of output 195 [2022-11-23 14:36:16,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:36:16,121 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:36:16,576 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '363#(and (<= 0 |ULTIMATE.start_main_~i~1#1|) (< |ULTIMATE.start_main_~i~1#1| |ULTIMATE.start_main_~n~0#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~x~0#1.offset|)) |ULTIMATE.start_main_#t~mem5#1|) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~n~0#1| 1000) (= (ite (= |ULTIMATE.start_main_#t~mem5#1| 0) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:36:16,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:36:16,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:36:16,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 21 [2022-11-23 14:36:16,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402808985] [2022-11-23 14:36:16,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:36:16,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 14:36:16,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:16,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 14:36:16,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:36:16,579 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:16,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:16,806 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-23 14:36:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:36:16,807 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 14:36:16,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:16,807 INFO L225 Difference]: With dead ends: 19 [2022-11-23 14:36:16,807 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 14:36:16,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-11-23 14:36:16,809 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 35 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:16,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 18 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:36:16,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 14:36:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-23 14:36:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:16,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-23 14:36:16,816 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2022-11-23 14:36:16,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:16,817 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-23 14:36:16,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:16,817 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-23 14:36:16,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 14:36:16,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:16,821 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 14:36:16,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:36:17,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:17,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:17,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:17,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1190944506, now seen corresponding path program 3 times [2022-11-23 14:36:17,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:17,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507519302] [2022-11-23 14:36:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:17,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:17,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:17,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507519302] [2022-11-23 14:36:17,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507519302] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:36:17,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310726938] [2022-11-23 14:36:17,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:36:17,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:17,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:17,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:36:17,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:36:17,319 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:36:17,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:36:17,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 14:36:17,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:36:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:17,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:36:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:17,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310726938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:36:17,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1746345488] [2022-11-23 14:36:17,491 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:36:17,492 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:36:17,492 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:36:17,492 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:36:17,492 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:36:17,558 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-23 14:36:17,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-23 14:36:17,615 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 14:36:17,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-23 14:36:17,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-23 14:36:17,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:36:17,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:36:17,717 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-23 14:36:17,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 198 treesize of output 195 [2022-11-23 14:36:17,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:36:17,838 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:36:18,341 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '520#(and (<= 0 |ULTIMATE.start_main_~i~1#1|) (< |ULTIMATE.start_main_~i~1#1| |ULTIMATE.start_main_~n~0#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~x~0#1.offset|)) |ULTIMATE.start_main_#t~mem5#1|) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_main_~n~0#1| 1000) (= (ite (= |ULTIMATE.start_main_#t~mem5#1| 0) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:36:18,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:36:18,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:36:18,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-11-23 14:36:18,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742324472] [2022-11-23 14:36:18,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:36:18,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:36:18,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:18,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:36:18,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:36:18,344 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:18,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:18,455 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-11-23 14:36:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:36:18,456 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-23 14:36:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:18,456 INFO L225 Difference]: With dead ends: 28 [2022-11-23 14:36:18,457 INFO L226 Difference]: Without dead ends: 16 [2022-11-23 14:36:18,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:36:18,458 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:18,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 19 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:36:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-23 14:36:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-23 14:36:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-23 14:36:18,476 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2022-11-23 14:36:18,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:18,476 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-23 14:36:18,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:18,476 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-23 14:36:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 14:36:18,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:18,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-23 14:36:18,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:36:18,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:18,686 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1800015492, now seen corresponding path program 4 times [2022-11-23 14:36:18,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:18,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894444785] [2022-11-23 14:36:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:18,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:19,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:19,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:19,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894444785] [2022-11-23 14:36:19,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894444785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:36:19,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783556458] [2022-11-23 14:36:19,034 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:36:19,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:19,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:19,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:36:19,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:36:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:19,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-23 14:36:19,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:36:19,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-23 14:36:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:19,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:36:19,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-23 14:36:19,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2022-11-23 14:36:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:19,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783556458] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:36:19,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1327689799] [2022-11-23 14:36:19,479 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:36:19,480 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:36:19,480 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:36:19,480 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:36:19,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:36:19,530 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-23 14:36:19,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 34 [2022-11-23 14:36:19,585 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 14:36:19,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-23 14:36:19,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:36:19,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:36:19,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:36:19,709 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-23 14:36:19,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 196 treesize of output 199 [2022-11-23 14:36:19,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:36:19,875 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:36:20,314 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '704#(and (<= 0 |ULTIMATE.start_main_~i~1#1|) (< |ULTIMATE.start_main_~i~1#1| |ULTIMATE.start_main_~n~0#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~x~0#1.offset|)) |ULTIMATE.start_main_#t~mem5#1|) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~n~0#1| 1000) (= (ite (= |ULTIMATE.start_main_#t~mem5#1| 0) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:36:20,314 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:36:20,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:36:20,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-11-23 14:36:20,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334314914] [2022-11-23 14:36:20,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:36:20,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 14:36:20,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:20,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 14:36:20,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-23 14:36:20,318 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:20,574 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-23 14:36:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:36:20,574 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-23 14:36:20,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:20,575 INFO L225 Difference]: With dead ends: 23 [2022-11-23 14:36:20,575 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 14:36:20,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2022-11-23 14:36:20,577 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 41 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:20,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 42 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:36:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 14:36:20,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-11-23 14:36:20,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-23 14:36:20,585 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2022-11-23 14:36:20,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:20,585 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-23 14:36:20,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-23 14:36:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 14:36:20,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:20,586 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-23 14:36:20,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:36:20,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:20,793 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:20,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:20,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1599984559, now seen corresponding path program 5 times [2022-11-23 14:36:20,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:20,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140402695] [2022-11-23 14:36:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:20,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:20,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:20,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140402695] [2022-11-23 14:36:20,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140402695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:36:20,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176396573] [2022-11-23 14:36:20,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:36:20,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:20,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:20,964 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:36:20,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:36:21,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 14:36:21,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:36:21,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 14:36:21,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:36:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:21,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:36:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:21,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176396573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:36:21,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2085500345] [2022-11-23 14:36:21,306 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:36:21,306 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:36:21,307 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:36:21,307 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:36:21,307 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:36:21,359 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 14:36:21,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-23 14:36:21,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-23 14:36:21,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-23 14:36:21,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:36:21,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:36:21,486 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-11-23 14:36:21,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 196 treesize of output 199 [2022-11-23 14:36:21,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:36:21,644 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:36:22,013 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '906#(and (<= 0 |ULTIMATE.start_main_~i~1#1|) (< |ULTIMATE.start_main_~i~1#1| |ULTIMATE.start_main_~n~0#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~x~0#1.offset|)) |ULTIMATE.start_main_#t~mem5#1|) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~n~0#1| 1000) (= (ite (= |ULTIMATE.start_main_#t~mem5#1| 0) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:36:22,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:36:22,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:36:22,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2022-11-23 14:36:22,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463291134] [2022-11-23 14:36:22,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:36:22,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 14:36:22,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:22,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 14:36:22,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:36:22,016 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:22,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:22,144 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-11-23 14:36:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:36:22,144 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-23 14:36:22,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:22,145 INFO L225 Difference]: With dead ends: 35 [2022-11-23 14:36:22,145 INFO L226 Difference]: Without dead ends: 20 [2022-11-23 14:36:22,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2022-11-23 14:36:22,146 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:22,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 30 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:36:22,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-23 14:36:22,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-23 14:36:22,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-23 14:36:22,155 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2022-11-23 14:36:22,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:22,155 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-23 14:36:22,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:22,156 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-23 14:36:22,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 14:36:22,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:22,156 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1] [2022-11-23 14:36:22,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:36:22,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 14:36:22,364 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:22,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:22,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1054125625, now seen corresponding path program 6 times [2022-11-23 14:36:22,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:22,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052634538] [2022-11-23 14:36:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:22,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:22,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052634538] [2022-11-23 14:36:22,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052634538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:36:22,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932922107] [2022-11-23 14:36:22,687 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:36:22,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:22,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:22,689 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:36:22,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:36:22,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:36:22,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:36:22,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 14:36:22,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:36:22,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-23 14:36:23,341 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-23 14:36:23,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 23 [2022-11-23 14:36:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:23,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:36:23,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-23 14:36:23,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-11-23 14:36:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:23,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932922107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:36:23,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [70759805] [2022-11-23 14:36:23,904 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-23 14:36:23,905 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:36:23,905 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:36:23,905 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:36:23,905 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:36:23,962 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 14:36:23,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2022-11-23 14:36:23,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-23 14:36:24,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-11-23 14:36:24,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:36:24,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:36:24,079 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-11-23 14:36:24,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 198 treesize of output 195 [2022-11-23 14:36:24,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 14:36:24,254 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:36:24,975 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1143#(and (<= 0 |ULTIMATE.start_main_~i~1#1|) (< |ULTIMATE.start_main_~i~1#1| |ULTIMATE.start_main_~n~0#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~x~0#1.offset|)) |ULTIMATE.start_main_#t~mem5#1|) (= |ULTIMATE.start_main_~x~0#1.offset| 0) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_main_~n~0#1| 1000) (= (ite (= |ULTIMATE.start_main_#t~mem5#1| 0) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:36:24,976 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:36:24,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:36:24,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2022-11-23 14:36:24,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873331263] [2022-11-23 14:36:24,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:36:24,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-23 14:36:24,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:24,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-23 14:36:24,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 14:36:24,979 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:28,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:28,641 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-11-23 14:36:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-23 14:36:28,642 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-23 14:36:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:28,643 INFO L225 Difference]: With dead ends: 36 [2022-11-23 14:36:28,643 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:36:28,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=390, Invalid=2686, Unknown=4, NotChecked=0, Total=3080 [2022-11-23 14:36:28,646 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 73 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:28,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 31 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:36:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:36:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:36:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:36:28,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2022-11-23 14:36:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:28,650 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:36:28,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:28,651 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:36:28,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:36:28,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:36:28,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:36:28,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:28,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 14:36:30,834 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 14:36:30,835 INFO L895 garLoopResultBuilder]: At program point L31-3(line 31) the Hoare annotation is: (let ((.cse18 (+ (* |ULTIMATE.start_main_~i~1#1| 4) |ULTIMATE.start_main_~x~0#1.offset|)) (.cse6 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse4 (= (select .cse6 (+ 12 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse12 (<= |ULTIMATE.start_main_~n~0#1| 2)) (.cse13 (<= |ULTIMATE.start_main_~i~0#1| 2)) (.cse14 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1)) (.cse17 (= |ULTIMATE.start_main_~i~1#1| 1)) (.cse10 (<= |ULTIMATE.start_main_~n~0#1| 1)) (.cse11 (<= |ULTIMATE.start_main_~i~0#1| 1)) (.cse1 (= (select .cse6 .cse18) 0)) (.cse9 (= .cse18 0)) (.cse7 (forall ((|v_ULTIMATE.start_main_~i~1#1_57| Int)) (or (< |ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~1#1_57| 1)) (< |v_ULTIMATE.start_main_~i~1#1_57| 3) (= (select .cse6 (+ (* |v_ULTIMATE.start_main_~i~1#1_57| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0)))) (.cse0 (= 0 (select .cse6 0))) (.cse15 (<= |ULTIMATE.start_main_~i~0#1| 3)) (.cse2 (= |ULTIMATE.start_main_~x~0#1.offset| 0)) (.cse3 (= (select .cse6 (+ 8 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse5 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) (.cse8 (= (select .cse6 (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 0)) (.cse16 (<= |ULTIMATE.start_main_~n~0#1| 3))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (forall ((|v_ULTIMATE.start_main_~i~1#1_57| Int)) (or (not (< |v_ULTIMATE.start_main_~i~1#1_57| |ULTIMATE.start_main_~n~0#1|)) (not (<= (+ |ULTIMATE.start_main_~i~1#1| 1) |v_ULTIMATE.start_main_~i~1#1_57|)) (= (select .cse6 (+ (* |v_ULTIMATE.start_main_~i~1#1_57| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0))) .cse7 .cse8) (and .cse1 .cse2 .cse9 .cse10 .cse11) (and .cse12 .cse0 (<= 2 |ULTIMATE.start_main_~i~1#1|) .cse13 .cse2 .cse5 .cse8) (and (not (< |ULTIMATE.start_main_~i~1#1| |ULTIMATE.start_main_~n~0#1|)) .cse0 .cse14 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8) (and .cse0 .cse15 .cse2 .cse3 .cse5 (<= 3 |ULTIMATE.start_main_~i~1#1|) .cse8 .cse16) (and .cse12 .cse0 .cse14 .cse13 .cse17 .cse2 .cse5 .cse8) (and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~i~1#1| 0) (<= |ULTIMATE.start_main_~n~0#1| 0)) (and .cse12 .cse1 .cse13 .cse2 .cse9 .cse8) (and .cse0 .cse15 .cse14 .cse17 .cse2 .cse3 .cse5 .cse8 .cse16) (and .cse0 .cse2 .cse5 (<= 1 |ULTIMATE.start_main_~i~1#1|) .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse9 (forall ((|v_ULTIMATE.start_main_~i~1#1_57| Int)) (or (not (< |v_ULTIMATE.start_main_~i~1#1_57| |ULTIMATE.start_main_~n~0#1|)) (< |v_ULTIMATE.start_main_~i~1#1_57| (+ 3 |ULTIMATE.start_main_~i~1#1|)) (= (select .cse6 (+ (* |v_ULTIMATE.start_main_~i~1#1_57| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0))) .cse7 .cse8) (and .cse0 .cse15 .cse2 .cse3 .cse5 (= 2 |ULTIMATE.start_main_~i~1#1|) .cse8 .cse16)))) [2022-11-23 14:36:30,835 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 21) no Hoare annotation was computed. [2022-11-23 14:36:30,836 INFO L895 garLoopResultBuilder]: At program point L19-2(lines 18 23) the Hoare annotation is: (let ((.cse4 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse1 (= |ULTIMATE.start_main_~i~1#1| 0)) (.cse6 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1)) (.cse8 (= (select .cse4 (+ 12 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse5 (* |ULTIMATE.start_main_~i~1#1| 4)) (.cse9 (forall ((|v_ULTIMATE.start_main_~i~1#1_57| Int)) (or (not (< |v_ULTIMATE.start_main_~i~1#1_57| |ULTIMATE.start_main_~n~0#1|)) (not (<= (+ |ULTIMATE.start_main_~i~1#1| 1) |v_ULTIMATE.start_main_~i~1#1_57|)) (= (select .cse4 (+ (* |v_ULTIMATE.start_main_~i~1#1_57| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0)))) (.cse10 (forall ((|v_ULTIMATE.start_main_~i~1#1_57| Int)) (or (< |ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~1#1_57| 1)) (< |v_ULTIMATE.start_main_~i~1#1_57| 3) (= (select .cse4 (+ (* |v_ULTIMATE.start_main_~i~1#1_57| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0)))) (.cse12 (<= |ULTIMATE.start_main_~i~0#1| 3)) (.cse7 (= (select .cse4 (+ 8 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse13 (<= |ULTIMATE.start_main_~n~0#1| 3)) (.cse14 (<= |ULTIMATE.start_main_~n~0#1| 2)) (.cse0 (= 0 (select .cse4 0))) (.cse15 (<= |ULTIMATE.start_main_~i~0#1| 2)) (.cse2 (= |ULTIMATE.start_main_~x~0#1.offset| 0)) (.cse3 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0))) (.cse11 (= (select .cse4 (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 0))) (or (and .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~n~0#1| 1) (<= |ULTIMATE.start_main_~i~0#1| 1)) (and .cse0 (= (select .cse4 (+ .cse5 |ULTIMATE.start_main_~x~0#1.offset|)) 0) .cse6 .cse2 .cse7 .cse8 .cse3 .cse9 .cse10 .cse11) (and .cse0 .cse12 .cse1 .cse6 .cse2 .cse7 .cse3 .cse11 .cse13) (and .cse14 .cse0 .cse1 .cse6 .cse15 .cse2 .cse3 .cse11) (and .cse0 .cse12 (<= 2 |ULTIMATE.start_main_~i~1#1|) .cse2 .cse7 .cse3 .cse11 .cse13) (and .cse0 .cse2 .cse7 .cse8 .cse3 (= (select .cse4 (+ .cse5 |ULTIMATE.start_main_~x~0#1.offset| 4)) 0) .cse9 .cse10 .cse11) (and .cse0 .cse12 (= |ULTIMATE.start_main_~i~1#1| 1) .cse2 .cse7 .cse3 .cse11 .cse13) (and .cse14 .cse0 .cse15 .cse2 .cse3 (<= 1 |ULTIMATE.start_main_~i~1#1|) .cse11)))) [2022-11-23 14:36:30,836 INFO L902 garLoopResultBuilder]: At program point L32(lines 26 33) the Hoare annotation is: true [2022-11-23 14:36:30,836 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 14:36:30,837 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-11-23 14:36:30,837 INFO L895 garLoopResultBuilder]: At program point L30-3(line 30) the Hoare annotation is: (let ((.cse3 (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse0 (= 0 (select .cse3 0))) (.cse1 (= |ULTIMATE.start_main_~x~0#1.offset| 0)) (.cse2 (= (select .cse3 (+ 8 |ULTIMATE.start_main_~x~0#1.offset|)) 0)) (.cse4 (= (select .cse3 (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 0))) (or (and .cse0 (= |ULTIMATE.start_main_~i~0#1| 1) .cse1) (and .cse0 .cse1 .cse2 (= (select .cse3 (+ 12 |ULTIMATE.start_main_~x~0#1.offset|)) 0) (forall ((|v_ULTIMATE.start_main_~i~1#1_57| Int)) (or (< |ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~1#1_57| 1)) (< |v_ULTIMATE.start_main_~i~1#1_57| 3) (= (select .cse3 (+ (* |v_ULTIMATE.start_main_~i~1#1_57| 4) |ULTIMATE.start_main_~x~0#1.offset|)) 0))) .cse4) (and .cse0 (= 2 |ULTIMATE.start_main_~i~0#1|) .cse1 .cse4) (and .cse1 (= (+ (* |ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~x~0#1.offset|) 0)) (and .cse0 .cse1 .cse2 (<= 3 |ULTIMATE.start_main_~i~0#1|) (exists ((|v_ULTIMATE.start_main_~i~0#1_63| Int)) (and (<= |ULTIMATE.start_main_~i~0#1| (+ |v_ULTIMATE.start_main_~i~0#1_63| 1)) (= 0 (select .cse3 (+ (* |v_ULTIMATE.start_main_~i~0#1_63| 4) |ULTIMATE.start_main_~x~0#1.offset|))) (<= |v_ULTIMATE.start_main_~i~0#1_63| 3))) .cse4)))) [2022-11-23 14:36:30,837 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-23 14:36:30,838 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-23 14:36:30,841 INFO L444 BasicCegarLoop]: Path program histogram: [6, 1, 1] [2022-11-23 14:36:30,844 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:36:30,853 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,853 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,854 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,854 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,854 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,855 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,855 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,855 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,856 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,856 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,856 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,857 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,868 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,868 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,869 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,869 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,869 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,870 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,870 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,871 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,871 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,871 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,871 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,872 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,877 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,890 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,891 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,892 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] [2022-11-23 14:36:30,892 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] [2022-11-23 14:36:30,892 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] [2022-11-23 14:36:30,894 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,894 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,895 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,895 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] [2022-11-23 14:36:30,895 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] [2022-11-23 14:36:30,896 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] [2022-11-23 14:36:30,898 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,898 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,899 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,899 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,899 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,899 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,900 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,900 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,900 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,901 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,901 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,901 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,902 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,902 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,902 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,906 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,907 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,907 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,907 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,908 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,908 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,909 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,909 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,909 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,910 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,910 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,911 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,911 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,911 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,911 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:30,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:36:30 BoogieIcfgContainer [2022-11-23 14:36:30,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:36:30,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:36:30,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:36:30,917 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:36:30,918 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:09" (3/4) ... [2022-11-23 14:36:30,922 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 14:36:30,932 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-23 14:36:30,933 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-23 14:36:30,933 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 14:36:30,933 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 14:36:30,957 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0 == unknown-#memory_int-unknown[x][0] && i == 1) && x == 0) || (((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_57 : int :: (i < v_ULTIMATE.start_main_~i~1#1_57 + 1 || v_ULTIMATE.start_main_~i~1#1_57 < 3) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_57 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((0 == unknown-#memory_int-unknown[x][0] && 2 == i) && x == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (x == 0 && i * 4 + x == 0)) || (((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && 3 <= i) && (\exists v_ULTIMATE.start_main_~i~0#1_63 : int :: (i <= v_ULTIMATE.start_main_~i~0#1_63 + 1 && 0 == unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_63 * 4 + x]) && v_ULTIMATE.start_main_~i~0#1_63 <= 3)) && unknown-#memory_int-unknown[x][x + 4] == 0) [2022-11-23 14:36:30,979 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:36:30,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:36:30,980 INFO L158 Benchmark]: Toolchain (without parser) took 22328.76ms. Allocated memory was 155.2MB in the beginning and 251.7MB in the end (delta: 96.5MB). Free memory was 109.5MB in the beginning and 147.3MB in the end (delta: -37.8MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2022-11-23 14:36:30,980 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 155.2MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:36:30,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.14ms. Allocated memory is still 155.2MB. Free memory was 109.5MB in the beginning and 99.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:36:30,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.85ms. Allocated memory is still 155.2MB. Free memory was 99.0MB in the beginning and 97.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:36:30,981 INFO L158 Benchmark]: Boogie Preprocessor took 54.44ms. Allocated memory is still 155.2MB. Free memory was 97.6MB in the beginning and 96.7MB in the end (delta: 899.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:36:30,982 INFO L158 Benchmark]: RCFGBuilder took 472.58ms. Allocated memory is still 155.2MB. Free memory was 96.7MB in the beginning and 85.6MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 14:36:30,982 INFO L158 Benchmark]: TraceAbstraction took 21373.02ms. Allocated memory was 155.2MB in the beginning and 251.7MB in the end (delta: 96.5MB). Free memory was 85.0MB in the beginning and 150.5MB in the end (delta: -65.5MB). Peak memory consumption was 112.2MB. Max. memory is 16.1GB. [2022-11-23 14:36:30,983 INFO L158 Benchmark]: Witness Printer took 62.30ms. Allocated memory is still 251.7MB. Free memory was 150.5MB in the beginning and 147.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 14:36:30,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 155.2MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.14ms. Allocated memory is still 155.2MB. Free memory was 109.5MB in the beginning and 99.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.85ms. Allocated memory is still 155.2MB. Free memory was 99.0MB in the beginning and 97.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.44ms. Allocated memory is still 155.2MB. Free memory was 97.6MB in the beginning and 96.7MB in the end (delta: 899.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 472.58ms. Allocated memory is still 155.2MB. Free memory was 96.7MB in the beginning and 85.6MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 21373.02ms. Allocated memory was 155.2MB in the beginning and 251.7MB in the end (delta: 96.5MB). Free memory was 85.0MB in the beginning and 150.5MB in the end (delta: -65.5MB). Peak memory consumption was 112.2MB. Max. memory is 16.1GB. * Witness Printer took 62.30ms. Allocated memory is still 251.7MB. Free memory was 150.5MB in the beginning and 147.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.2s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 195 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 195 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 154 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 649 IncrementalHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 36 mSDtfsCounter, 649 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 163 SyntacticMatches, 24 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1438 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=7, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 45 NumberOfFragments, 1131 HoareAnnotationTreeSize, 4 FomulaSimplifications, 57 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 4 FomulaSimplificationsInter, 5117 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 266 ConstructedInterpolants, 21 QuantifiedInterpolants, 2048 SizeOfPredicates, 51 NumberOfNonLiveVariables, 596 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 22 InterpolantComputations, 1 PerfectInterpolantSequences, 81/234 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2022-11-23 14:36:31,015 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,017 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,017 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,018 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,018 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,018 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,019 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,022 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,022 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,022 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,022 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,023 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,026 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,042 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,043 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,043 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,044 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,044 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,044 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,044 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,045 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,045 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,045 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,045 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] Derived loop invariant: (((((((((((0 == unknown-#memory_int-unknown[x][0] && i == 0) && x == 0) && !(cond == 0)) && n <= 1) && i <= 1) || (((((((((0 == unknown-#memory_int-unknown[x][0] && unknown-#memory_int-unknown[x][i * 4 + x] == 0) && cond == 1) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && !(cond == 0)) && (forall v_ULTIMATE.start_main_~i~1#1_57 : int :: (!(v_ULTIMATE.start_main_~i~1#1_57 < n) || !(i + 1 <= v_ULTIMATE.start_main_~i~1#1_57)) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_57 * 4 + x] == 0)) && (forall v_ULTIMATE.start_main_~i~1#1_57 : int :: (i < v_ULTIMATE.start_main_~i~1#1_57 + 1 || v_ULTIMATE.start_main_~i~1#1_57 < 3) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_57 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((((0 == unknown-#memory_int-unknown[x][0] && i <= 3) && i == 0) && cond == 1) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0) && n <= 3)) || (((((((n <= 2 && 0 == unknown-#memory_int-unknown[x][0]) && i == 0) && cond == 1) && i <= 2) && x == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((0 == unknown-#memory_int-unknown[x][0] && i <= 3) && 2 <= i) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0) && n <= 3)) || ((((((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][i * 4 + x + 4] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_57 : int :: (!(v_ULTIMATE.start_main_~i~1#1_57 < n) || !(i + 1 <= v_ULTIMATE.start_main_~i~1#1_57)) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_57 * 4 + x] == 0)) && (forall v_ULTIMATE.start_main_~i~1#1_57 : int :: (i < v_ULTIMATE.start_main_~i~1#1_57 + 1 || v_ULTIMATE.start_main_~i~1#1_57 < 3) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_57 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((0 == unknown-#memory_int-unknown[x][0] && i <= 3) && i == 1) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0) && n <= 3)) || ((((((n <= 2 && 0 == unknown-#memory_int-unknown[x][0]) && i <= 2) && x == 0) && !(cond == 0)) && 1 <= i) && unknown-#memory_int-unknown[x][x + 4] == 0) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant [2022-11-23 14:36:31,048 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,048 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,048 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,049 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] [2022-11-23 14:36:31,049 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] [2022-11-23 14:36:31,049 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] [2022-11-23 14:36:31,050 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,050 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,051 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,051 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] [2022-11-23 14:36:31,051 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] [2022-11-23 14:36:31,051 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~0#1_63,QUANTIFIED] Derived loop invariant: (((((0 == unknown-#memory_int-unknown[x][0] && i == 1) && x == 0) || (((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && (forall v_ULTIMATE.start_main_~i~1#1_57 : int :: (i < v_ULTIMATE.start_main_~i~1#1_57 + 1 || v_ULTIMATE.start_main_~i~1#1_57 < 3) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_57 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((0 == unknown-#memory_int-unknown[x][0] && 2 == i) && x == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (x == 0 && i * 4 + x == 0)) || (((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && 3 <= i) && (\exists v_ULTIMATE.start_main_~i~0#1_63 : int :: (i <= v_ULTIMATE.start_main_~i~0#1_63 + 1 && 0 == unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~0#1_63 * 4 + x]) && v_ULTIMATE.start_main_~i~0#1_63 <= 3)) && unknown-#memory_int-unknown[x][x + 4] == 0) - InvariantResult [Line: 31]: Loop Invariant [2022-11-23 14:36:31,052 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,053 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,053 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,053 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,054 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,054 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,054 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,055 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,055 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,055 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,056 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,057 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,057 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,057 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,057 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,070 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,071 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,071 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,071 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,073 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,073 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,073 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,074 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,074 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,074 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,074 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] [2022-11-23 14:36:31,074 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~i~1#1_57,QUANTIFIED] Derived loop invariant: ((((((((((((((((((0 == unknown-#memory_int-unknown[x][0] && unknown-#memory_int-unknown[x][i * 4 + x] == 0) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && !(cond == 0)) && (forall v_ULTIMATE.start_main_~i~1#1_57 : int :: (!(v_ULTIMATE.start_main_~i~1#1_57 < n) || !(i + 1 <= v_ULTIMATE.start_main_~i~1#1_57)) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_57 * 4 + x] == 0)) && (forall v_ULTIMATE.start_main_~i~1#1_57 : int :: (i < v_ULTIMATE.start_main_~i~1#1_57 + 1 || v_ULTIMATE.start_main_~i~1#1_57 < 3) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_57 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0) || ((((unknown-#memory_int-unknown[x][i * 4 + x] == 0 && x == 0) && i * 4 + x == 0) && n <= 1) && i <= 1)) || ((((((n <= 2 && 0 == unknown-#memory_int-unknown[x][0]) && 2 <= i) && i <= 2) && x == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((((!(i < n) && 0 == unknown-#memory_int-unknown[x][0]) && cond == 1) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && unknown-#memory_int-unknown[x][12 + x] == 0) && !(cond == 0)) && (forall v_ULTIMATE.start_main_~i~1#1_57 : int :: (i < v_ULTIMATE.start_main_~i~1#1_57 + 1 || v_ULTIMATE.start_main_~i~1#1_57 < 3) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_57 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((0 == unknown-#memory_int-unknown[x][0] && i <= 3) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && !(cond == 0)) && 3 <= i) && unknown-#memory_int-unknown[x][x + 4] == 0) && n <= 3)) || (((((((n <= 2 && 0 == unknown-#memory_int-unknown[x][0]) && cond == 1) && i <= 2) && i == 1) && x == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((i == 0 && i == 0) && n <= 0)) || (((((n <= 2 && unknown-#memory_int-unknown[x][i * 4 + x] == 0) && i <= 2) && x == 0) && i * 4 + x == 0) && unknown-#memory_int-unknown[x][x + 4] == 0)) || ((((((((0 == unknown-#memory_int-unknown[x][0] && i <= 3) && cond == 1) && i == 1) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && !(cond == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0) && n <= 3)) || (((((0 == unknown-#memory_int-unknown[x][0] && x == 0) && !(cond == 0)) && 1 <= i) && n <= 1) && i <= 1)) || ((((((unknown-#memory_int-unknown[x][i * 4 + x] == 0 && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && i * 4 + x == 0) && (forall v_ULTIMATE.start_main_~i~1#1_57 : int :: (!(v_ULTIMATE.start_main_~i~1#1_57 < n) || v_ULTIMATE.start_main_~i~1#1_57 < 3 + i) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_57 * 4 + x] == 0)) && (forall v_ULTIMATE.start_main_~i~1#1_57 : int :: (i < v_ULTIMATE.start_main_~i~1#1_57 + 1 || v_ULTIMATE.start_main_~i~1#1_57 < 3) || unknown-#memory_int-unknown[x][v_ULTIMATE.start_main_~i~1#1_57 * 4 + x] == 0)) && unknown-#memory_int-unknown[x][x + 4] == 0)) || (((((((0 == unknown-#memory_int-unknown[x][0] && i <= 3) && x == 0) && unknown-#memory_int-unknown[x][8 + x] == 0) && !(cond == 0)) && 2 == i) && unknown-#memory_int-unknown[x][x + 4] == 0) && n <= 3) RESULT: Ultimate proved your program to be correct! [2022-11-23 14:36:31,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65befc65-21c2-4b2e-9dc5-e3cdac697a92/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE