./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh --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 278330930f6296a6ef523f9a21bb3281878247b5e50b78eb9077d2b7690716c4 --- 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-2329fc7 [2022-12-14 13:47:08,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:47:08,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:47:08,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:47:08,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:47:08,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:47:08,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:47:08,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:47:08,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:47:08,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:47:08,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:47:08,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:47:08,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:47:08,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:47:08,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:47:08,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:47:08,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:47:08,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:47:08,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:47:08,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:47:08,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:47:08,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:47:08,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:47:08,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:47:08,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:47:08,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:47:08,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:47:08,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:47:08,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:47:08,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:47:08,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:47:08,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:47:08,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:47:08,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:47:08,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:47:08,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:47:08,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:47:08,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:47:08,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:47:08,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:47:08,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:47:08,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:47:08,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:47:08,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:47:08,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:47:08,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:47:08,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:47:08,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:47:08,594 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:47:08,594 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:47:08,594 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:47:08,594 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:47:08,594 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:47:08,594 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:47:08,595 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:47:08,595 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:47:08,595 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:47:08,595 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:47:08,595 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:47:08,595 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:47:08,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:47:08,596 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:47:08,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:47:08,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:47:08,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:47:08,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:47:08,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:47:08,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:47:08,596 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:47:08,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:47:08,597 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:47:08,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:47:08,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:47:08,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:47:08,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:47:08,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:47:08,597 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:47:08,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:47:08,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:47:08,598 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:47:08,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:47:08,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:47:08,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:47:08,598 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_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 278330930f6296a6ef523f9a21bb3281878247b5e50b78eb9077d2b7690716c4 [2022-12-14 13:47:08,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:47:08,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:47:08,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:47:08,782 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:47:08,783 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:47:08,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c [2022-12-14 13:47:11,308 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:47:11,457 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:47:11,457 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/sv-benchmarks/c/loop-acceleration/diamond_1-2.c [2022-12-14 13:47:11,461 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/data/9c2fce355/a520b166fb3b43ff963151d669f28c05/FLAG17dfaa3fa [2022-12-14 13:47:11,866 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/data/9c2fce355/a520b166fb3b43ff963151d669f28c05 [2022-12-14 13:47:11,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:47:11,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:47:11,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:47:11,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:47:11,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:47:11,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:47:11" (1/1) ... [2022-12-14 13:47:11,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212229ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:11, skipping insertion in model container [2022-12-14 13:47:11,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:47:11" (1/1) ... [2022-12-14 13:47:11,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:47:11,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:47:11,977 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_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/sv-benchmarks/c/loop-acceleration/diamond_1-2.c[373,386] [2022-12-14 13:47:11,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:47:11,993 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:47:12,000 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_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/sv-benchmarks/c/loop-acceleration/diamond_1-2.c[373,386] [2022-12-14 13:47:12,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:47:12,011 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:47:12,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12 WrapperNode [2022-12-14 13:47:12,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:47:12,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:47:12,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:47:12,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:47:12,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12" (1/1) ... [2022-12-14 13:47:12,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12" (1/1) ... [2022-12-14 13:47:12,032 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-12-14 13:47:12,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:47:12,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:47:12,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:47:12,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:47:12,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12" (1/1) ... [2022-12-14 13:47:12,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12" (1/1) ... [2022-12-14 13:47:12,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12" (1/1) ... [2022-12-14 13:47:12,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12" (1/1) ... [2022-12-14 13:47:12,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12" (1/1) ... [2022-12-14 13:47:12,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12" (1/1) ... [2022-12-14 13:47:12,044 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12" (1/1) ... [2022-12-14 13:47:12,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12" (1/1) ... [2022-12-14 13:47:12,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:47:12,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:47:12,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:47:12,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:47:12,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12" (1/1) ... [2022-12-14 13:47:12,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:47:12,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:47:12,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:47:12,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:47:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:47:12,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:47:12,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:47:12,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:47:12,144 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:47:12,145 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:47:12,212 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:47:12,234 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:47:12,234 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:47:12,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:47:12 BoogieIcfgContainer [2022-12-14 13:47:12,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:47:12,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:47:12,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:47:12,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:47:12,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:47:11" (1/3) ... [2022-12-14 13:47:12,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8bb55d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:47:12, skipping insertion in model container [2022-12-14 13:47:12,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:47:12" (2/3) ... [2022-12-14 13:47:12,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8bb55d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:47:12, skipping insertion in model container [2022-12-14 13:47:12,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:47:12" (3/3) ... [2022-12-14 13:47:12,242 INFO L112 eAbstractionObserver]: Analyzing ICFG diamond_1-2.c [2022-12-14 13:47:12,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:47:12,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:47:12,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:47:12,294 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;@454b29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:47:12,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:47:12,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-12-14 13:47:12,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 13:47:12,301 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:12,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 13:47:12,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:47:12,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2066920, now seen corresponding path program 1 times [2022-12-14 13:47:12,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:12,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880950895] [2022-12-14 13:47:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:12,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:12,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:47:12,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880950895] [2022-12-14 13:47:12,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880950895] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:47:12,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:47:12,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 13:47:12,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273652667] [2022-12-14 13:47:12,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:47:12,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:47:12,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:47:12,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:47:12,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:47:12,500 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 13:47:12,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:47:12,522 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-12-14 13:47:12,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:47:12,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-12-14 13:47:12,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:47:12,529 INFO L225 Difference]: With dead ends: 13 [2022-12-14 13:47:12,530 INFO L226 Difference]: Without dead ends: 6 [2022-12-14 13:47:12,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:47:12,534 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:47:12,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:47:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-12-14 13:47:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-12-14 13:47:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-12-14 13:47:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-12-14 13:47:12,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-12-14 13:47:12,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:47:12,558 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-12-14 13:47:12,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-12-14 13:47:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-12-14 13:47:12,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 13:47:12,559 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:12,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 13:47:12,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:47:12,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:47:12,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:12,560 INFO L85 PathProgramCache]: Analyzing trace with hash 64032200, now seen corresponding path program 1 times [2022-12-14 13:47:12,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:12,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649130137] [2022-12-14 13:47:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:12,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:12,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:47:12,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649130137] [2022-12-14 13:47:12,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649130137] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:47:12,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138542469] [2022-12-14 13:47:12,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:12,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:47:12,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:47:12,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:47:12,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:47:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:12,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 13:47:12,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:47:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:12,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:47:12,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:12,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138542469] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:47:12,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [67262350] [2022-12-14 13:47:13,002 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 13:47:13,002 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:47:13,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:47:13,010 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:47:13,011 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:47:13,188 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:47:13,369 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '69#(and (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~y~0#1| 2) 4294967296) (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 1 0)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 99)) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:47:13,370 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:47:13,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:47:13,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-14 13:47:13,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935308200] [2022-12-14 13:47:13,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:47:13,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 13:47:13,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:47:13,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 13:47:13,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-14 13:47:13,372 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) [2022-12-14 13:47:13,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:47:13,437 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2022-12-14 13:47:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:47:13,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) Word has length 5 [2022-12-14 13:47:13,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:47:13,439 INFO L225 Difference]: With dead ends: 12 [2022-12-14 13:47:13,439 INFO L226 Difference]: Without dead ends: 9 [2022-12-14 13:47:13,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-14 13:47:13,440 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:47:13,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:47:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-14 13:47:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-12-14 13:47:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-12-14 13:47:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 13:47:13,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-12-14 13:47:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:47:13,444 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-12-14 13:47:13,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) [2022-12-14 13:47:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 13:47:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 13:47:13,445 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:13,445 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-12-14 13:47:13,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:47:13,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:47:13,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:47:13,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:13,647 INFO L85 PathProgramCache]: Analyzing trace with hash 575767016, now seen corresponding path program 2 times [2022-12-14 13:47:13,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:13,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61638186] [2022-12-14 13:47:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:13,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:13,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:47:13,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61638186] [2022-12-14 13:47:13,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61638186] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:47:13,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918708655] [2022-12-14 13:47:13,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:47:13,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:47:13,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:47:13,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:47:13,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:47:14,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 13:47:14,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:47:14,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 13:47:14,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:47:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:14,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:47:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:14,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918708655] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:47:14,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1966102888] [2022-12-14 13:47:14,615 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 13:47:14,615 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:47:14,615 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:47:14,616 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:47:14,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:47:14,707 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:47:14,915 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '160#(and (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~y~0#1| 2) 4294967296) (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 1 0)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 99)) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:47:14,915 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:47:14,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:47:14,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-14 13:47:14,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410674251] [2022-12-14 13:47:14,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:47:14,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 13:47:14,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:47:14,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 13:47:14,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-12-14 13:47:14,918 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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) [2022-12-14 13:47:16,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:47:16,471 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-12-14 13:47:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:47:16,472 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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) Word has length 8 [2022-12-14 13:47:16,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:47:16,472 INFO L225 Difference]: With dead ends: 18 [2022-12-14 13:47:16,472 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 13:47:16,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2022-12-14 13:47:16,473 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:47:16,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:47:16,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 13:47:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 13:47:16,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-12-14 13:47:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 13:47:16,478 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-12-14 13:47:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:47:16,478 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 13:47:16,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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) [2022-12-14 13:47:16,478 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 13:47:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 13:47:16,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:16,479 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-12-14 13:47:16,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:47:16,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:47:16,680 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:47:16,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:16,680 INFO L85 PathProgramCache]: Analyzing trace with hash -692324888, now seen corresponding path program 3 times [2022-12-14 13:47:16,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:16,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085287707] [2022-12-14 13:47:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:16,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:17,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:47:17,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085287707] [2022-12-14 13:47:17,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085287707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:47:17,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888973573] [2022-12-14 13:47:17,277 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 13:47:17,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:47:17,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:47:17,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:47:17,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:47:17,315 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 13:47:17,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:47:17,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 13:47:17,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:47:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:17,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:47:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:18,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888973573] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:47:18,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1061945857] [2022-12-14 13:47:18,875 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 13:47:18,875 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:47:18,875 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:47:18,876 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:47:18,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:47:18,936 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:47:19,221 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '329#(and (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~y~0#1| 2) 4294967296) (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 1 0)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 99)) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:47:19,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:47:19,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:47:19,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-12-14 13:47:19,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362707060] [2022-12-14 13:47:19,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:47:19,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 13:47:19,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:47:19,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 13:47:19,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2022-12-14 13:47:19,222 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 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) [2022-12-14 13:47:47,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:47:47,374 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2022-12-14 13:47:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 13:47:47,374 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 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 [2022-12-14 13:47:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:47:47,375 INFO L225 Difference]: With dead ends: 30 [2022-12-14 13:47:47,375 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 13:47:47,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 29.0s TimeCoverageRelationStatistics Valid=449, Invalid=957, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 13:47:47,376 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:47:47,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 13:47:47,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 13:47:47,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-14 13:47:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 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) [2022-12-14 13:47:47,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-12-14 13:47:47,385 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-12-14 13:47:47,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:47:47,386 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-12-14 13:47:47,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.12) internal successors, (28), 24 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) [2022-12-14 13:47:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-12-14 13:47:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 13:47:47,386 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:47:47,386 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2022-12-14 13:47:47,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 13:47:47,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:47:47,588 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:47:47,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:47:47,589 INFO L85 PathProgramCache]: Analyzing trace with hash 719052264, now seen corresponding path program 4 times [2022-12-14 13:47:47,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:47:47,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542418096] [2022-12-14 13:47:47,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:47:47,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:47:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:49,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:47:49,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542418096] [2022-12-14 13:47:49,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542418096] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:47:49,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505934809] [2022-12-14 13:47:49,314 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:47:49,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:47:49,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:47:49,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:47:49,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:47:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:47:49,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 13:47:49,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:47:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:50,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:47:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:47:54,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505934809] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:47:54,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [497567151] [2022-12-14 13:47:54,582 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 13:47:54,583 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:47:54,583 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:47:54,583 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:47:54,583 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:47:54,644 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:47:55,133 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '654#(and (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~y~0#1| 2) 4294967296) (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 1 0)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 99)) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:47:55,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:47:55,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:47:55,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-12-14 13:47:55,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407062072] [2022-12-14 13:47:55,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:47:55,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 13:47:55,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:47:55,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 13:47:55,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1973, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 13:47:55,135 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 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) [2022-12-14 13:48:16,862 WARN L233 SmtUtils]: Spent 15.47s on a formula simplification. DAG size of input: 286 DAG size of output: 13 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:48:41,911 WARN L233 SmtUtils]: Spent 17.82s on a formula simplification. DAG size of input: 279 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:49:00,440 WARN L233 SmtUtils]: Spent 9.92s on a formula simplification. DAG size of input: 263 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:49:26,586 WARN L233 SmtUtils]: Spent 16.90s on a formula simplification. DAG size of input: 254 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:49:51,173 WARN L233 SmtUtils]: Spent 11.17s on a formula simplification. DAG size of input: 238 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:50:23,636 WARN L233 SmtUtils]: Spent 18.87s on a formula simplification. DAG size of input: 229 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:50:51,530 WARN L233 SmtUtils]: Spent 12.08s on a formula simplification. DAG size of input: 213 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:51:12,272 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 204 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:51:33,805 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 188 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:51:58,834 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 179 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:54:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:54:27,978 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2022-12-14 13:54:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 13:54:27,979 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 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 26 [2022-12-14 13:54:27,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:54:27,980 INFO L225 Difference]: With dead ends: 54 [2022-12-14 13:54:27,980 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 13:54:27,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 29 SyntacticMatches, 21 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 397.3s TimeCoverageRelationStatistics Valid=1741, Invalid=3643, Unknown=18, NotChecked=0, Total=5402 [2022-12-14 13:54:27,982 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 13:54:27,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 13:54:27,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 13:54:27,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-12-14 13:54:27,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 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) [2022-12-14 13:54:27,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-12-14 13:54:27,993 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2022-12-14 13:54:27,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:54:27,994 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-12-14 13:54:27,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 48 states have internal predecessors, (52), 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) [2022-12-14 13:54:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-12-14 13:54:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 13:54:27,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:54:27,994 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1] [2022-12-14 13:54:27,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 13:54:28,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:54:28,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:54:28,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:54:28,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1934077416, now seen corresponding path program 5 times [2022-12-14 13:54:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:54:28,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746152481] [2022-12-14 13:54:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:54:28,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:54:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:54:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:54:33,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:54:33,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746152481] [2022-12-14 13:54:33,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746152481] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:54:33,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373988345] [2022-12-14 13:54:33,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:54:33,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:54:33,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:54:33,209 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:54:33,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:54:35,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-12-14 13:54:35,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:54:35,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 55 conjunts are in the unsatisfiable core [2022-12-14 13:54:35,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:54:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:54:39,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:55:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:55:02,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373988345] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:55:02,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1178593336] [2022-12-14 13:55:02,938 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-12-14 13:55:02,938 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:55:02,939 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:55:02,939 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:55:02,939 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:55:02,990 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:55:04,302 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1292#(and (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~y~0#1| 2) 4294967296) (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296)) 1 0)) (<= 0 |ULTIMATE.start_main_~x~0#1|) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 99)) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 13:55:04,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:55:04,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:55:04,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 49] total 97 [2022-12-14 13:55:04,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216984454] [2022-12-14 13:55:04,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:55:04,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-12-14 13:55:04,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:55:04,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-12-14 13:55:04,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1516, Invalid=8583, Unknown=1, NotChecked=0, Total=10100 [2022-12-14 13:55:04,309 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 98 states, 98 states have (on average 1.030612244897959) internal successors, (101), 97 states have internal predecessors, (101), 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) [2022-12-14 13:55:15,676 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse28 (+ |c_ULTIMATE.start_main_~x~0#1| 1)) (.cse4 (mod (mod |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296)) (.cse5 (- |c_ULTIMATE.start_main_~x~0#1|)) (.cse6 (* (div |c_ULTIMATE.start_main_~x~0#1| 2) 2))) (let ((.cse2 (< (+ 4294967291 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 95)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse11 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 81)) 4294967296)) 4294967277) |c_ULTIMATE.start_main_~x~0#1|)) (.cse7 (< (+ 4294967269 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 73)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse10 (< (+ 4294967267 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 71)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|)) (.cse13 (< (+ 4294967285 (* (div (+ (- 89) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse18 (< (+ 4294967259 (* (div (+ (- 63) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse20 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 85)) 4294967296) 4294967296) 4294967281) |c_ULTIMATE.start_main_~x~0#1|)) (.cse3 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 97)) 4294967296) 4294967296) 4294967293) |c_ULTIMATE.start_main_~x~0#1|)) (.cse16 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 59)) 4294967296) 4294967296) 4294967255) |c_ULTIMATE.start_main_~x~0#1|)) (.cse14 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 61)) 4294967296) 4294967296) 4294967257) |c_ULTIMATE.start_main_~x~0#1|)) (.cse23 (< (+ 4294967279 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 83)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse9 (< (+ 4294967273 (* (div (+ (- 77) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse24 (< (+ 4294967263 (* (div (+ (- 67) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse19 (< (+ 4294967253 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 57)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse21 (< (+ 4294967271 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 75)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse12 (< (+ (* (div (+ (- 69) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967265) |c_ULTIMATE.start_main_~x~0#1|)) (.cse22 (< (+ 4294967275 (* (div (+ (- 79) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse25 (< (+ 4294967251 (* (div (+ (- 55) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse17 (< (+ 4294967283 (* (div (+ (- 87) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse27 (< (+ 4294967261 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 65)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse15 (< (+ 4294967289 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 93)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (.cse8 (< |c_ULTIMATE.start_main_~x~0#1| (+ .cse4 (* 4294967296 (div (+ .cse5 1 .cse6) 4294967296)) 1 .cse6))) (.cse26 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 91)) 4294967296) 4294967296) 4294967287) |c_ULTIMATE.start_main_~x~0#1|)) (.cse0 (< |c_ULTIMATE.start_main_~x~0#1| (let ((.cse29 (* 2 (div .cse28 2)))) (+ .cse4 (* (div (+ .cse5 .cse29) 4294967296) 4294967296) .cse29)))) (.cse1 (< (+ .cse4 .cse6) .cse28))) (and (or (< (+ (* (div (+ (- 88) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967284) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ (* (div (+ (- 13) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967209) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse2 .cse1) (or (< (+ 4294967274 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 78)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 31)) 4294967296) 4294967296) 4294967227) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ 4294967239 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 43)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse3 (< |c_ULTIMATE.start_main_~x~0#1| (+ .cse4 (* (div (+ .cse5 (- 4294967295) .cse6) 4294967296) 4294967296) 4294967297 .cse6))) (or .cse7 .cse1) (or (< (+ 4294967282 (* (div (+ (- 86) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse9) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 82)) 4294967296) 4294967296) 4294967278) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse10) (or (< (+ 4294967292 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 96)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 41)) 4294967296) 4294967296) 4294967237) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 98)) 4294967296) 4294967296) 4294967294) |c_ULTIMATE.start_main_~x~0#1|) (< |c_ULTIMATE.start_main_~x~0#1| (+ .cse4 (* (div (+ .cse5 (* 2 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 4294967295)) 2))) 4294967296) 4294967296) (* 2 (div (+ (- 1) |c_ULTIMATE.start_main_~x~0#1|) 2)) 4294967298))) (or (< (+ 4294967217 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 21)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse11 .cse1) (or .cse8 .cse2) (or .cse8 .cse11) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 49)) 4294967296) 4294967296) 4294967245) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse8 .cse7) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 33)) 4294967296) 4294967296) 4294967229) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ (* (div (+ (- 51) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967247) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ 4294967254 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 58)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse12 .cse1) (or (< (+ 4294967264 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 68)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse13) (or .cse8 .cse14) (or (< (+ (* (div (+ (- 11) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967207) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse10 .cse1) (or (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 39)) 4294967296)) 4294967235) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ 4294967250 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 54)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse13 .cse1) (or .cse15 .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 60)) 4294967296) 4294967296) 4294967256) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse16) (or (< (+ 4294967260 (* (div (+ (- 64) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse17) (or .cse18 .cse1) (or .cse19 .cse1) (or .cse20 .cse1) (or .cse8 .cse18) (or .cse8 .cse20) (or .cse3 .cse1) (or (< (+ 4294967262 (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 66)) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 27)) 4294967296) 4294967296) 4294967223) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ 4294967286 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 90)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse21) (or .cse22 .cse1) (or .cse16 .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 56)) 4294967296) 4294967296) 4294967252) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ 4294967231 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 35)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse14 .cse1) (or (< (+ 4294967213 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 17)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse23 .cse1) (or .cse8 .cse23) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 84)) 4294967296) 4294967296) 4294967280) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse1 (< (+ (* 4294967296 (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 25)) 4294967296)) 4294967221) |c_ULTIMATE.start_main_~x~0#1|)) (or (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 99) (= .cse4 (mod (mod |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296))) (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (or .cse9 .cse1) (or .cse8 .cse24) (or .cse1 .cse24) (or .cse8 .cse25) (or (< (+ (* (div (+ (- 53) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967249) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ 4294967268 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 72)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ 4294967243 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 47)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse8 .cse19) (or .cse21 .cse1) (or (< (+ 4294967272 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 76)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse8 .cse12) (or .cse8 .cse22) (or .cse0 (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 74)) 4294967296) 4294967296) 4294967270) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse26 .cse1) (or (< (+ 4294967288 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 92)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse27 .cse1) (or .cse0 (< (+ 4294967266 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 70)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse1 .cse25) (or (< (+ (* (div (+ (- 9) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296) 4294967205) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ 4294967276 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 80)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or .cse17 .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 37)) 4294967296) 4294967296) 4294967233) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or .cse0 (< (+ 4294967290 (* 4294967296 (div (+ (- 94) |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) |c_ULTIMATE.start_main_~x~0#1|)) (or .cse8 .cse27) (or .cse8 .cse15) (or .cse8 .cse26) (or (< (+ 4294967225 (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 29)) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 23)) 4294967296) 4294967296) 4294967219) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 19)) 4294967296) 4294967296) 4294967215) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 62)) 4294967296) 4294967296) 4294967258) |c_ULTIMATE.start_main_~x~0#1|) .cse0) (or (< (+ 4294967241 (* (div (+ (- 45) |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 4294967296)) |c_ULTIMATE.start_main_~x~0#1|) .cse1) (or (< (+ (* (div (+ |c_ULTIMATE.start_main_~x~0#1| (- 15)) 4294967296) 4294967296) 4294967211) |c_ULTIMATE.start_main_~x~0#1|) .cse1)))) is different from false [2022-12-14 13:56:32,410 WARN L233 SmtUtils]: Spent 17.42s on a formula simplification. DAG size of input: 313 DAG size of output: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:56:32,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:56:32,537 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2022-12-14 13:56:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-14 13:56:32,538 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.030612244897959) internal successors, (101), 97 states have internal predecessors, (101), 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 50 [2022-12-14 13:56:32,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:56:32,538 INFO L225 Difference]: With dead ends: 60 [2022-12-14 13:56:32,538 INFO L226 Difference]: Without dead ends: 55 [2022-12-14 13:56:32,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 52 SyntacticMatches, 45 SemanticMatches, 103 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 108.1s TimeCoverageRelationStatistics Valid=1650, Invalid=9052, Unknown=14, NotChecked=204, Total=10920 [2022-12-14 13:56:32,544 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-12-14 13:56:32,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 101 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-12-14 13:56:32,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-14 13:56:32,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-12-14 13:56:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 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) [2022-12-14 13:56:32,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2022-12-14 13:56:32,559 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2022-12-14 13:56:32,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:56:32,559 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2022-12-14 13:56:32,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.030612244897959) internal successors, (101), 97 states have internal predecessors, (101), 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) [2022-12-14 13:56:32,560 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2022-12-14 13:56:32,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 13:56:32,561 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:56:32,561 INFO L195 NwaCegarLoop]: trace histogram [50, 1, 1, 1, 1] [2022-12-14 13:56:32,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 13:56:32,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 13:56:32,763 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:56:32,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:56:32,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1127766552, now seen corresponding path program 6 times [2022-12-14 13:56:32,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:56:32,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184502429] [2022-12-14 13:56:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:56:32,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:56:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:56:32,854 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:56:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:56:32,924 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:56:32,924 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:56:32,925 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:56:32,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 13:56:32,930 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1] [2022-12-14 13:56:32,933 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:56:32,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:56:32 BoogieIcfgContainer [2022-12-14 13:56:32,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:56:32,962 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:56:32,962 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:56:32,962 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:56:32,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:47:12" (3/4) ... [2022-12-14 13:56:32,964 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 13:56:33,003 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 13:56:33,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:56:33,004 INFO L158 Benchmark]: Toolchain (without parser) took 561135.13ms. Allocated memory was 159.4MB in the beginning and 243.3MB in the end (delta: 83.9MB). Free memory was 127.1MB in the beginning and 128.5MB in the end (delta: -1.4MB). Peak memory consumption was 84.6MB. Max. memory is 16.1GB. [2022-12-14 13:56:33,004 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:56:33,004 INFO L158 Benchmark]: CACSL2BoogieTranslator took 142.04ms. Allocated memory is still 159.4MB. Free memory was 126.4MB in the beginning and 116.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 13:56:33,004 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.51ms. Allocated memory is still 159.4MB. Free memory was 116.6MB in the beginning and 115.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:56:33,005 INFO L158 Benchmark]: Boogie Preprocessor took 12.74ms. Allocated memory is still 159.4MB. Free memory was 115.2MB in the beginning and 113.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:56:33,005 INFO L158 Benchmark]: RCFGBuilder took 189.74ms. Allocated memory is still 159.4MB. Free memory was 113.8MB in the beginning and 103.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 13:56:33,005 INFO L158 Benchmark]: TraceAbstraction took 560724.36ms. Allocated memory was 159.4MB in the beginning and 243.3MB in the end (delta: 83.9MB). Free memory was 102.7MB in the beginning and 132.7MB in the end (delta: -30.0MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. [2022-12-14 13:56:33,005 INFO L158 Benchmark]: Witness Printer took 41.34ms. Allocated memory is still 243.3MB. Free memory was 132.7MB in the beginning and 128.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 13:56:33,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 142.04ms. Allocated memory is still 159.4MB. Free memory was 126.4MB in the beginning and 116.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.51ms. Allocated memory is still 159.4MB. Free memory was 116.6MB in the beginning and 115.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.74ms. Allocated memory is still 159.4MB. Free memory was 115.2MB in the beginning and 113.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 189.74ms. Allocated memory is still 159.4MB. Free memory was 113.8MB in the beginning and 103.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 560724.36ms. Allocated memory was 159.4MB in the beginning and 243.3MB in the end (delta: 83.9MB). Free memory was 102.7MB in the beginning and 132.7MB in the end (delta: -30.0MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. * Witness Printer took 41.34ms. Allocated memory is still 243.3MB. Free memory was 132.7MB in the beginning and 128.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned int y = __VERIFIER_nondet_uint(); [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=2, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=4, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=6, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=8, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=10, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=12, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=14, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=16, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=18, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=20, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=22, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=24, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=26, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=28, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=30, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=32, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=34, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=36, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=38, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=40, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=42, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=44, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=46, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=48, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=50, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=52, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=54, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=56, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=58, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=60, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=62, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=64, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=66, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=68, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=70, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=72, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=74, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=76, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=78, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=80, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=82, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=84, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=86, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=88, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=90, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=92, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=94, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=96, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=98, x++=101, y=1] [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=100, x++=101, y=1] [L17] COND FALSE !(x < 99) [L25] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 560.7s, OverallIterations: 7, TraceHistogramMax: 50, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 510.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 7.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 205 SdHoareTripleChecker+Invalid, 7.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 113 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3186 IncrementalHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 113 mSolverCounterUnsat, 13 mSDtfsCounter, 3186 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 435 GetRequests, 118 SyntacticMatches, 78 SemanticMatches, 239 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2146 ImplicationChecksByTransitivity, 536.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=6, InterpolantAutomatonStates: 147, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 42.9s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 297 ConstructedInterpolants, 0 QuantifiedInterpolants, 13245 SizeOfPredicates, 25 NumberOfNonLiveVariables, 341 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-14 13:56:33,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_225d2c20-b07d-4dff-a4f0-3f5a4f2aef14/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE