./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array7_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array7_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --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 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:24:39,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:24:39,998 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:24:40,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:24:40,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:24:40,028 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:24:40,030 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:24:40,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:24:40,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:24:40,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:24:40,034 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:24:40,034 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:24:40,035 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:24:40,035 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:24:40,035 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:24:40,038 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:24:40,038 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:24:40,039 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:24:40,039 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:24:40,039 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:24:40,039 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:24:40,044 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:24:40,044 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:24:40,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:24:40,045 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:24:40,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:24:40,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:24:40,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:24:40,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:24:40,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:24:40,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:24:40,046 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:24:40,047 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:24:40,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:24:40,047 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:24:40,051 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:24:40,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:24:40,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:24:40,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:24:40,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:24:40,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:24:40,053 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:24:40,054 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:24:40,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:24:40,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:24:40,054 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:24:40,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:24:40,055 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa [2024-11-09 05:24:40,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:24:40,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:24:40,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:24:40,392 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:24:40,393 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:24:40,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-patterns/array7_pattern.c Unable to find full path for "g++" [2024-11-09 05:24:42,716 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:24:42,988 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:24:42,990 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/sv-benchmarks/c/array-patterns/array7_pattern.c [2024-11-09 05:24:43,007 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/data/3ff9088da/f47f3bcf22274039929649941c970824/FLAGba891b27f [2024-11-09 05:24:43,033 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/data/3ff9088da/f47f3bcf22274039929649941c970824 [2024-11-09 05:24:43,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:24:43,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:24:43,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:24:43,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:24:43,051 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:24:43,052 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656d066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43, skipping insertion in model container [2024-11-09 05:24:43,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,095 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:24:43,403 WARN L250 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_a07ac1cf-47ea-4f00-8316-a7363f9115c8/sv-benchmarks/c/array-patterns/array7_pattern.c[1375,1388] [2024-11-09 05:24:43,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:24:43,464 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:24:43,482 WARN L250 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_a07ac1cf-47ea-4f00-8316-a7363f9115c8/sv-benchmarks/c/array-patterns/array7_pattern.c[1375,1388] [2024-11-09 05:24:43,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:24:43,544 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:24:43,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43 WrapperNode [2024-11-09 05:24:43,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:24:43,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:24:43,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:24:43,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:24:43,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,604 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2024-11-09 05:24:43,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:24:43,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:24:43,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:24:43,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:24:43,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,639 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:24:43,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:24:43,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:24:43,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:24:43,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43" (1/1) ... [2024-11-09 05:24:43,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:24:43,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:24:43,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:24:43,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:24:43,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:24:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:24:43,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:24:43,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:24:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:24:43,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:24:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:24:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:24:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:24:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:24:43,849 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:24:43,851 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:24:44,140 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-09 05:24:44,141 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:24:44,204 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:24:44,207 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:24:44,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:24:44 BoogieIcfgContainer [2024-11-09 05:24:44,207 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:24:44,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:24:44,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:24:44,219 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:24:44,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:24:43" (1/3) ... [2024-11-09 05:24:44,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b0a94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:24:44, skipping insertion in model container [2024-11-09 05:24:44,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:24:43" (2/3) ... [2024-11-09 05:24:44,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b0a94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:24:44, skipping insertion in model container [2024-11-09 05:24:44,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:24:44" (3/3) ... [2024-11-09 05:24:44,227 INFO L112 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2024-11-09 05:24:44,250 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:24:44,250 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:24:44,335 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:24:44,344 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1ae2f005, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:24:44,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:24:44,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:24:44,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:24:44,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:24:44,360 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:24:44,361 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:24:44,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:24:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1781560910, now seen corresponding path program 1 times [2024-11-09 05:24:44,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:24:44,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300639575] [2024-11-09 05:24:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:24:44,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:24:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:24:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:24:44,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:24:44,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300639575] [2024-11-09 05:24:44,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300639575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:24:44,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:24:44,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:24:44,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166853163] [2024-11-09 05:24:44,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:24:44,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:24:44,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:24:44,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:24:44,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:24:44,697 INFO L87 Difference]: Start difference. First operand has 21 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:24:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:24:44,754 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2024-11-09 05:24:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:24:44,757 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-09 05:24:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:24:44,765 INFO L225 Difference]: With dead ends: 30 [2024-11-09 05:24:44,765 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 05:24:44,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:24:44,773 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:24:44,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:24:44,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 05:24:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 05:24:44,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:24:44,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2024-11-09 05:24:44,820 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 12 [2024-11-09 05:24:44,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:24:44,822 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-11-09 05:24:44,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:24:44,823 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2024-11-09 05:24:44,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 05:24:44,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:24:44,826 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:24:44,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:24:44,827 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:24:44,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:24:44,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2109443811, now seen corresponding path program 1 times [2024-11-09 05:24:44,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:24:44,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727243923] [2024-11-09 05:24:44,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:24:44,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:24:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:24:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:24:45,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:24:45,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727243923] [2024-11-09 05:24:45,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727243923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:24:45,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:24:45,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:24:45,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422403826] [2024-11-09 05:24:45,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:24:45,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:24:45,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:24:45,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:24:45,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:24:45,445 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:24:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:24:45,483 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2024-11-09 05:24:45,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:24:45,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-11-09 05:24:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:24:45,486 INFO L225 Difference]: With dead ends: 25 [2024-11-09 05:24:45,486 INFO L226 Difference]: Without dead ends: 21 [2024-11-09 05:24:45,487 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:24:45,489 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:24:45,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 50 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:24:45,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-09 05:24:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-09 05:24:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:24:45,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2024-11-09 05:24:45,499 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 20 [2024-11-09 05:24:45,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:24:45,500 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2024-11-09 05:24:45,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:24:45,501 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2024-11-09 05:24:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 05:24:45,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:24:45,503 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:24:45,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:24:45,504 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:24:45,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:24:45,505 INFO L85 PathProgramCache]: Analyzing trace with hash -253311608, now seen corresponding path program 1 times [2024-11-09 05:24:45,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:24:45,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010096690] [2024-11-09 05:24:45,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:24:45,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:24:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:24:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 05:24:45,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:24:45,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010096690] [2024-11-09 05:24:45,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010096690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:24:45,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:24:45,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:24:45,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197177844] [2024-11-09 05:24:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:24:45,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:24:45,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:24:45,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:24:45,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:24:45,796 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:24:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:24:45,909 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2024-11-09 05:24:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:24:45,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-11-09 05:24:45,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:24:45,912 INFO L225 Difference]: With dead ends: 39 [2024-11-09 05:24:45,912 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 05:24:45,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:24:45,915 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:24:45,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:24:45,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 05:24:45,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 05:24:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:24:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2024-11-09 05:24:45,925 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 22 [2024-11-09 05:24:45,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:24:45,926 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2024-11-09 05:24:45,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 05:24:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2024-11-09 05:24:45,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 05:24:45,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:24:45,928 INFO L215 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:24:45,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:24:45,929 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:24:45,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:24:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1492744093, now seen corresponding path program 1 times [2024-11-09 05:24:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:24:45,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484492103] [2024-11-09 05:24:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:24:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:24:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:24:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 05:24:46,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:24:46,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484492103] [2024-11-09 05:24:46,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484492103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:24:46,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374135234] [2024-11-09 05:24:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:24:46,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:24:46,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:24:46,411 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:24:46,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:24:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:24:46,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:24:46,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:24:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:24:46,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:24:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:24:47,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374135234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:24:47,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [503576833] [2024-11-09 05:24:47,148 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-09 05:24:47,149 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:24:47,154 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:24:47,162 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:24:47,166 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:24:51,227 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 11 for LOIs [2024-11-09 05:24:51,230 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:24:59,141 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '408#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= 3 ~ARR_SIZE~0) (<= 2 |ULTIMATE.start_main_~#array1~0#1.base|) (<= 2 |ULTIMATE.start_main_~#array2~0#1.base|) (= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (<= ~ARR_SIZE~0 32767))' at error location [2024-11-09 05:24:59,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:24:59,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:24:59,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2024-11-09 05:24:59,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526652379] [2024-11-09 05:24:59,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:24:59,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 05:24:59,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:24:59,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 05:24:59,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=752, Unknown=1, NotChecked=0, Total=870 [2024-11-09 05:24:59,150 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 14 states, 8 states have (on average 3.375) internal successors, (27), 11 states have internal predecessors, (27), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 05:24:59,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:24:59,715 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2024-11-09 05:24:59,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:24:59,718 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 8 states have (on average 3.375) internal successors, (27), 11 states have internal predecessors, (27), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 24 [2024-11-09 05:24:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:24:59,719 INFO L225 Difference]: With dead ends: 65 [2024-11-09 05:24:59,719 INFO L226 Difference]: Without dead ends: 39 [2024-11-09 05:24:59,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=128, Invalid=863, Unknown=1, NotChecked=0, Total=992 [2024-11-09 05:24:59,724 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:24:59,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 65 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:24:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-09 05:24:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2024-11-09 05:24:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:24:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-09 05:24:59,736 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 24 [2024-11-09 05:24:59,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:24:59,737 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-09 05:24:59,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 8 states have (on average 3.375) internal successors, (27), 11 states have internal predecessors, (27), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 05:24:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-09 05:24:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 05:24:59,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:24:59,740 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:24:59,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:24:59,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:24:59,947 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:24:59,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:24:59,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1665278503, now seen corresponding path program 2 times [2024-11-09 05:24:59,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:24:59,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810922074] [2024-11-09 05:24:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:24:59,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:25:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:25:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 05:25:00,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:25:00,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810922074] [2024-11-09 05:25:00,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810922074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:25:00,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821377692] [2024-11-09 05:25:00,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:25:00,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:25:00,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:25:00,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:25:00,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:25:00,430 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 05:25:00,430 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:25:00,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:25:00,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:25:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 05:25:00,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:25:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:25:01,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821377692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:25:01,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2048581802] [2024-11-09 05:25:01,124 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-09 05:25:01,125 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:25:01,126 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:25:01,126 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:25:01,126 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:25:04,029 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 11 for LOIs [2024-11-09 05:25:04,034 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:25:12,428 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '739#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= 3 ~ARR_SIZE~0) (<= 2 |ULTIMATE.start_main_~#array1~0#1.base|) (<= 2 |ULTIMATE.start_main_~#array2~0#1.base|) (= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (<= ~ARR_SIZE~0 32767))' at error location [2024-11-09 05:25:12,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:25:12,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:25:12,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2024-11-09 05:25:12,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679988165] [2024-11-09 05:25:12,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:25:12,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 05:25:12,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:25:12,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 05:25:12,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=730, Unknown=2, NotChecked=0, Total=870 [2024-11-09 05:25:12,433 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 14 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 05:25:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:25:14,650 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2024-11-09 05:25:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 05:25:14,651 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 28 [2024-11-09 05:25:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:25:14,654 INFO L225 Difference]: With dead ends: 53 [2024-11-09 05:25:14,654 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 05:25:14,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=223, Invalid=1415, Unknown=2, NotChecked=0, Total=1640 [2024-11-09 05:25:14,657 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:25:14,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 59 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 05:25:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 05:25:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2024-11-09 05:25:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:25:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-11-09 05:25:14,675 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 28 [2024-11-09 05:25:14,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:25:14,676 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-11-09 05:25:14,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 13 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-09 05:25:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-11-09 05:25:14,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 05:25:14,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:25:14,678 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:25:14,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:25:14,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:25:14,879 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:25:14,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:25:14,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1825884899, now seen corresponding path program 3 times [2024-11-09 05:25:14,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:25:14,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847847118] [2024-11-09 05:25:14,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:25:14,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:25:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:25:15,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456983855] [2024-11-09 05:25:15,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:25:15,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:25:15,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:25:15,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:25:15,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a07ac1cf-47ea-4f00-8316-a7363f9115c8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:25:15,478 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:25:15,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:25:15,482 WARN L253 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-09 05:25:15,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:25:15,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 05:25:16,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-09 05:25:16,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 37 [2024-11-09 05:25:17,351 INFO L349 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2024-11-09 05:25:17,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 58 treesize of output 59 [2024-11-09 05:25:21,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:26,266 INFO L349 Elim1Store]: treesize reduction 880, result has 2.5 percent of original size [2024-11-09 05:25:26,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 9 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 12 new quantified variables, introduced 23 case distinctions, treesize of input 1270 treesize of output 1523 [2024-11-09 05:25:36,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:36,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:37,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:37,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:37,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:38,309 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:25:38,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:39,179 INFO L224 Elim1Store]: Index analysis took 2448 ms [2024-11-09 05:25:39,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1611 treesize of output 1606 [2024-11-09 05:25:47,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,585 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:25:47,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,657 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:25:47,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:47,728 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:25:47,729 INFO L224 Elim1Store]: Index analysis took 194 ms [2024-11-09 05:25:47,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 709 treesize of output 598 [2024-11-09 05:25:51,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:51,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:51,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:51,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:51,922 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:25:51,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:51,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:51,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:51,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:51,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:51,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:52,002 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:25:52,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:52,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:52,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:52,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:52,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:25:52,061 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:25:52,061 INFO L224 Elim1Store]: Index analysis took 193 ms [2024-11-09 05:25:52,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 709 treesize of output 592 [2024-11-09 05:26:05,196 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 05:26:05,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:26:05,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:26:05,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:26:05,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:26:05,280 INFO L349 Elim1Store]: treesize reduction 850, result has 0.1 percent of original size [2024-11-09 05:26:05,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 9 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 11 new quantified variables, introduced 23 case distinctions, treesize of input 1245 treesize of output 1459 [2024-11-09 05:26:13,934 WARN L286 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 277 DAG size of output: 275 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:26:29,966 WARN L286 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:26:50,822 WARN L286 SmtUtils]: Spent 6.94s on a formula simplification that was a NOOP. DAG size: 280 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:27:18,658 WARN L286 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 279 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:27:32,339 WARN L286 SmtUtils]: Spent 13.43s on a formula simplification. DAG size of input: 99 DAG size of output: 95 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 05:27:32,339 INFO L349 Elim1Store]: treesize reduction 8, result has 95.3 percent of original size [2024-11-09 05:27:32,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 3680 treesize of output 3564 [2024-11-09 05:27:46,330 WARN L286 SmtUtils]: Spent 13.75s on a formula simplification. DAG size of input: 180 DAG size of output: 100 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 05:27:46,330 INFO L349 Elim1Store]: treesize reduction 436, result has 36.0 percent of original size [2024-11-09 05:27:46,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 31 case distinctions, treesize of input 2310 treesize of output 2499 [2024-11-09 05:27:46,685 INFO L224 Elim1Store]: Index analysis took 166 ms [2024-11-09 05:27:56,421 WARN L286 SmtUtils]: Spent 9.73s on a formula simplification. DAG size of input: 102 DAG size of output: 86 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-09 05:27:56,421 INFO L349 Elim1Store]: treesize reduction 82, result has 65.8 percent of original size [2024-11-09 05:27:56,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 2228 treesize of output 2356 [2024-11-09 05:28:00,235 INFO L349 Elim1Store]: treesize reduction 82, result has 65.8 percent of original size [2024-11-09 05:28:00,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 2189 treesize of output 2317 [2024-11-09 05:28:03,239 INFO L349 Elim1Store]: treesize reduction 82, result has 65.8 percent of original size [2024-11-09 05:28:03,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 2150 treesize of output 2278