./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_two_index_09.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/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_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_two_index_09.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/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_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/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 c10901f6cd435bfce49587e6dcf9dfedb0e3885a1bcbcf1013c88383e8232647 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:52:53,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:52:53,549 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:52:53,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:52:53,557 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:52:53,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:52:53,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:52:53,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:52:53,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:52:53,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:52:53,596 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:52:53,596 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:52:53,597 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:52:53,597 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:52:53,599 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:52:53,600 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:52:53,600 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:52:53,600 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:52:53,601 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:52:53,601 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:52:53,605 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:52:53,606 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:52:53,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:52:53,607 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:52:53,607 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:52:53,607 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:52:53,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:52:53,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:52:53,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:52:53,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:52:53,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:52:53,610 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:52:53,610 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:52:53,611 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:52:53,611 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:52:53,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:52:53,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:52:53,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:52:53,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:52:53,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:52:53,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:52:53,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:52:53,615 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:52:53,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:52:53,616 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:52:53,617 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:52:53,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:52:53,617 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_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c10901f6cd435bfce49587e6dcf9dfedb0e3885a1bcbcf1013c88383e8232647 [2024-11-09 05:52:53,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:52:53,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:52:53,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:52:53,966 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:52:53,967 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:52:53,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/array-examples/standard_two_index_09.i Unable to find full path for "g++" [2024-11-09 05:52:56,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:52:56,474 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:52:56,475 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/sv-benchmarks/c/array-examples/standard_two_index_09.i [2024-11-09 05:52:56,483 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/data/93344d7f0/f2e4b330db504193bcf6f17c893e95d9/FLAG01715ae4f [2024-11-09 05:52:56,821 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/data/93344d7f0/f2e4b330db504193bcf6f17c893e95d9 [2024-11-09 05:52:56,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:52:56,826 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:52:56,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:52:56,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:52:56,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:52:56,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:52:56" (1/1) ... [2024-11-09 05:52:56,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469fbf23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:56, skipping insertion in model container [2024-11-09 05:52:56,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:52:56" (1/1) ... [2024-11-09 05:52:56,868 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:52:57,110 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_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/sv-benchmarks/c/array-examples/standard_two_index_09.i[814,827] [2024-11-09 05:52:57,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:52:57,145 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:52:57,162 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_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/sv-benchmarks/c/array-examples/standard_two_index_09.i[814,827] [2024-11-09 05:52:57,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:52:57,194 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:52:57,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57 WrapperNode [2024-11-09 05:52:57,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:52:57,197 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:52:57,197 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:52:57,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:52:57,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57" (1/1) ... [2024-11-09 05:52:57,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57" (1/1) ... [2024-11-09 05:52:57,241 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2024-11-09 05:52:57,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:52:57,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:52:57,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:52:57,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:52:57,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57" (1/1) ... [2024-11-09 05:52:57,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57" (1/1) ... [2024-11-09 05:52:57,258 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57" (1/1) ... [2024-11-09 05:52:57,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57" (1/1) ... [2024-11-09 05:52:57,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57" (1/1) ... [2024-11-09 05:52:57,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57" (1/1) ... [2024-11-09 05:52:57,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57" (1/1) ... [2024-11-09 05:52:57,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57" (1/1) ... [2024-11-09 05:52:57,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:52:57,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:52:57,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:52:57,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:52:57,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57" (1/1) ... [2024-11-09 05:52:57,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:52:57,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:52:57,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:52:57,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:52:57,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:52:57,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:52:57,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:52:57,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:52:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:52:57,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:52:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:52:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:52:57,441 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:52:57,444 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:52:57,611 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-09 05:52:57,611 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:52:57,642 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:52:57,643 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:52:57,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:52:57 BoogieIcfgContainer [2024-11-09 05:52:57,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:52:57,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:52:57,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:52:57,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:52:57,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:52:56" (1/3) ... [2024-11-09 05:52:57,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fb5835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:52:57, skipping insertion in model container [2024-11-09 05:52:57,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:52:57" (2/3) ... [2024-11-09 05:52:57,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fb5835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:52:57, skipping insertion in model container [2024-11-09 05:52:57,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:52:57" (3/3) ... [2024-11-09 05:52:57,656 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_two_index_09.i [2024-11-09 05:52:57,682 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:52:57,683 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:52:57,772 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:52:57,780 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;@2c217014, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:52:57,781 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:52:57,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:57,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 05:52:57,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:57,793 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:52:57,793 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:52:57,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash -249157758, now seen corresponding path program 1 times [2024-11-09 05:52:57,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:52:57,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327618204] [2024-11-09 05:52:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:57,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:52:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:58,108 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 05:52:58,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:52:58,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327618204] [2024-11-09 05:52:58,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327618204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:52:58,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:52:58,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:52:58,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208566111] [2024-11-09 05:52:58,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:52:58,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:52:58,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:52:58,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:52:58,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:52:58,182 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2024-11-09 05:52:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:52:58,258 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2024-11-09 05:52:58,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:52:58,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) Word has length 9 [2024-11-09 05:52:58,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:52:58,275 INFO L225 Difference]: With dead ends: 29 [2024-11-09 05:52:58,275 INFO L226 Difference]: Without dead ends: 15 [2024-11-09 05:52:58,279 INFO L431 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 [2024-11-09 05:52:58,285 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:52:58,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:52:58,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-09 05:52:58,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-09 05:52:58,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2024-11-09 05:52:58,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2024-11-09 05:52:58,340 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 9 [2024-11-09 05:52:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:52:58,341 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2024-11-09 05:52:58,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2024-11-09 05:52:58,343 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2024-11-09 05:52:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 05:52:58,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:58,344 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:52:58,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:52:58,346 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:52:58,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:58,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1078368647, now seen corresponding path program 1 times [2024-11-09 05:52:58,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:52:58,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470057400] [2024-11-09 05:52:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:58,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:52:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:52:58,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:52:58,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470057400] [2024-11-09 05:52:58,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470057400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:52:58,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429112783] [2024-11-09 05:52:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:58,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:52:58,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:52:58,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:52:58,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:52:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:58,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:52:58,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:52:58,628 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:52:58,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429112783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:52:58,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:52:58,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2024-11-09 05:52:58,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670092092] [2024-11-09 05:52:58,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:52:58,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:52:58,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:52:58,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:52:58,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:52:58,631 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-09 05:52:58,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:52:58,681 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2024-11-09 05:52:58,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:52:58,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 05:52:58,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:52:58,683 INFO L225 Difference]: With dead ends: 30 [2024-11-09 05:52:58,683 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 05:52:58,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:52:58,685 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:52:58,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 12 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:52:58,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 05:52:58,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2024-11-09 05:52:58,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:52:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-09 05:52:58,690 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2024-11-09 05:52:58,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:52:58,691 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-09 05:52:58,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-09 05:52:58,691 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-09 05:52:58,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:52:58,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:52:58,692 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:52:58,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 05:52:58,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-09 05:52:58,893 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:52:58,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:52:58,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1819962196, now seen corresponding path program 1 times [2024-11-09 05:52:58,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:52:58,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892659895] [2024-11-09 05:52:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:58,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:52:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:59,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:52:59,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:52:59,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892659895] [2024-11-09 05:52:59,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892659895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:52:59,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893910630] [2024-11-09 05:52:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:52:59,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:52:59,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:52:59,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:52:59,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:52:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:52:59,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:52:59,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:52:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:52:59,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:52:59,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:52:59,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893910630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:52:59,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [610654813] [2024-11-09 05:52:59,238 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:52:59,238 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:52:59,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:52:59,247 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:52:59,247 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:53:00,262 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:53:00,636 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '249#(and (<= 1 |#StackHeapBarrier|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) 4) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0))) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#b~0#1.base|) (= |ULTIMATE.start_main_~i~0#1| 1) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~j~0#1| 0))' at error location [2024-11-09 05:53:00,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:53:00,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:53:00,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 05:53:00,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440323628] [2024-11-09 05:53:00,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:53:00,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:53:00,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:53:00,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:53:00,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-11-09 05:53:00,639 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:53:00,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:53:00,757 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2024-11-09 05:53:00,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:53:00,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 05:53:00,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:53:00,760 INFO L225 Difference]: With dead ends: 48 [2024-11-09 05:53:00,760 INFO L226 Difference]: Without dead ends: 36 [2024-11-09 05:53:00,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-11-09 05:53:00,762 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 36 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:53:00,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 16 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:53:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-09 05:53:00,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2024-11-09 05:53:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 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) [2024-11-09 05:53:00,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-09 05:53:00,774 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 13 [2024-11-09 05:53:00,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:53:00,775 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-09 05:53:00,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:53:00,776 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-09 05:53:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 05:53:00,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:53:00,779 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:53:00,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:53:00,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:00,981 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:53:00,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:53:00,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1309311392, now seen corresponding path program 2 times [2024-11-09 05:53:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:53:00,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522593123] [2024-11-09 05:53:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:53:00,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:53:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:53:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:53:01,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:53:01,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522593123] [2024-11-09 05:53:01,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522593123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:53:01,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797673867] [2024-11-09 05:53:01,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:53:01,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:01,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:53:01,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:53:01,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:53:01,318 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 05:53:01,318 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:53:01,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:53:01,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:53:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:53:01,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:53:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:53:01,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797673867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:53:01,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [539083623] [2024-11-09 05:53:01,399 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:53:01,399 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:53:01,400 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:53:01,400 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:53:01,400 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:53:01,830 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:53:02,162 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '481#(and (<= 1 |#StackHeapBarrier|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) 4) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0))) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#b~0#1.base|) (= |ULTIMATE.start_main_~i~0#1| 1) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~j~0#1| 0))' at error location [2024-11-09 05:53:02,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:53:02,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:53:02,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-09 05:53:02,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121801430] [2024-11-09 05:53:02,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:53:02,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 05:53:02,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:53:02,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 05:53:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:53:02,167 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2024-11-09 05:53:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:53:02,313 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2024-11-09 05:53:02,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 05:53:02,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 21 [2024-11-09 05:53:02,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:53:02,315 INFO L225 Difference]: With dead ends: 79 [2024-11-09 05:53:02,317 INFO L226 Difference]: Without dead ends: 66 [2024-11-09 05:53:02,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:53:02,319 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 85 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:53:02,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 22 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:53:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-09 05:53:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 35. [2024-11-09 05:53:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 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) [2024-11-09 05:53:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-11-09 05:53:02,332 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 21 [2024-11-09 05:53:02,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:53:02,332 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-11-09 05:53:02,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) [2024-11-09 05:53:02,334 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2024-11-09 05:53:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 05:53:02,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:53:02,335 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:53:02,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:53:02,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:02,537 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:53:02,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:53:02,544 INFO L85 PathProgramCache]: Analyzing trace with hash -298552450, now seen corresponding path program 3 times [2024-11-09 05:53:02,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:53:02,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531215555] [2024-11-09 05:53:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:53:02,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:53:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:53:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 05:53:02,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:53:02,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531215555] [2024-11-09 05:53:02,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531215555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:53:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274440592] [2024-11-09 05:53:02,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:53:02,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:02,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:53:02,945 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:53:02,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:53:03,045 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:53:03,046 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:53:03,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:53:03,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:53:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 05:53:03,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:53:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 05:53:03,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274440592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:53:03,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [98816133] [2024-11-09 05:53:03,333 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:53:03,334 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:53:03,336 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:53:03,337 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:53:03,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:53:03,732 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:53:04,088 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '859#(and (<= 1 |#StackHeapBarrier|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) 4) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0))) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#b~0#1.base|) (= |ULTIMATE.start_main_~i~0#1| 1) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~j~0#1| 0))' at error location [2024-11-09 05:53:04,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:53:04,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:53:04,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2024-11-09 05:53:04,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834182756] [2024-11-09 05:53:04,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:53:04,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 05:53:04,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:53:04,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 05:53:04,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=633, Unknown=0, NotChecked=0, Total=992 [2024-11-09 05:53:04,092 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 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) [2024-11-09 05:53:04,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:53:04,326 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2024-11-09 05:53:04,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 05:53:04,327 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 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) Word has length 33 [2024-11-09 05:53:04,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:53:04,328 INFO L225 Difference]: With dead ends: 137 [2024-11-09 05:53:04,329 INFO L226 Difference]: Without dead ends: 116 [2024-11-09 05:53:04,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=359, Invalid=633, Unknown=0, NotChecked=0, Total=992 [2024-11-09 05:53:04,331 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 101 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:53:04,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 43 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:53:04,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-09 05:53:04,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 67. [2024-11-09 05:53:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 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) [2024-11-09 05:53:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2024-11-09 05:53:04,341 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 33 [2024-11-09 05:53:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:53:04,341 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2024-11-09 05:53:04,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 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) [2024-11-09 05:53:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2024-11-09 05:53:04,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 05:53:04,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:53:04,344 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:53:04,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:53:04,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:04,549 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:53:04,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:53:04,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1625957006, now seen corresponding path program 4 times [2024-11-09 05:53:04,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:53:04,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568984337] [2024-11-09 05:53:04,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:53:04,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:53:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:53:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-09 05:53:04,984 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:53:04,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568984337] [2024-11-09 05:53:04,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568984337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:53:04,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16006726] [2024-11-09 05:53:04,985 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:53:04,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:04,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:53:04,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:53:04,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:53:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:53:05,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 05:53:05,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:53:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 05:53:05,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:53:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-09 05:53:06,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16006726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:53:06,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1954030658] [2024-11-09 05:53:06,076 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:53:06,078 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:53:06,079 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:53:06,079 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:53:06,079 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:53:06,402 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:53:06,703 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1585#(and (<= 1 |#StackHeapBarrier|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) 4) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0))) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#b~0#1.base|) (= |ULTIMATE.start_main_~i~0#1| 1) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~j~0#1| 0))' at error location [2024-11-09 05:53:06,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:53:06,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:53:06,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22, 22] total 51 [2024-11-09 05:53:06,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703953113] [2024-11-09 05:53:06,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:53:06,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-09 05:53:06,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:53:06,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-09 05:53:06,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1465, Invalid=2075, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 05:53:06,711 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 51 states, 51 states have (on average 2.2549019607843137) internal successors, (115), 51 states have internal predecessors, (115), 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) [2024-11-09 05:53:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:53:07,215 INFO L93 Difference]: Finished difference Result 229 states and 264 transitions. [2024-11-09 05:53:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-09 05:53:07,216 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.2549019607843137) internal successors, (115), 51 states have internal predecessors, (115), 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 65 [2024-11-09 05:53:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:53:07,218 INFO L225 Difference]: With dead ends: 229 [2024-11-09 05:53:07,218 INFO L226 Difference]: Without dead ends: 204 [2024-11-09 05:53:07,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2068 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1465, Invalid=2075, Unknown=0, NotChecked=0, Total=3540 [2024-11-09 05:53:07,221 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 291 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:53:07,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 70 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:53:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-09 05:53:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 131. [2024-11-09 05:53:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.023076923076923) internal successors, (133), 130 states have internal predecessors, (133), 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) [2024-11-09 05:53:07,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2024-11-09 05:53:07,235 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 65 [2024-11-09 05:53:07,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:53:07,239 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2024-11-09 05:53:07,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.2549019607843137) internal successors, (115), 51 states have internal predecessors, (115), 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) [2024-11-09 05:53:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2024-11-09 05:53:07,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-09 05:53:07,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:53:07,245 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:53:07,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:53:07,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 05:53:07,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:53:07,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:53:07,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1188339886, now seen corresponding path program 5 times [2024-11-09 05:53:07,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:53:07,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091231329] [2024-11-09 05:53:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:53:07,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:53:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:53:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2448 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2024-11-09 05:53:08,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:53:08,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091231329] [2024-11-09 05:53:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091231329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:53:08,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676717563] [2024-11-09 05:53:08,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:53:08,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:08,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:53:08,232 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:53:08,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:53:10,519 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-11-09 05:53:10,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:53:10,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 05:53:10,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:53:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2448 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2024-11-09 05:53:10,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:53:10,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2448 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2024-11-09 05:53:10,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676717563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:53:10,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [853667888] [2024-11-09 05:53:10,956 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:53:10,956 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:53:10,957 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:53:10,957 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:53:10,957 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:53:11,251 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:53:11,512 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2899#(and (<= 1 |#StackHeapBarrier|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) 4) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0))) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#b~0#1.base|) (= |ULTIMATE.start_main_~i~0#1| 1) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~j~0#1| 0))' at error location [2024-11-09 05:53:11,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:53:11,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:53:11,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-11-09 05:53:11,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913837010] [2024-11-09 05:53:11,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:53:11,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 05:53:11,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:53:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 05:53:11,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=872, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 05:53:11,516 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 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) [2024-11-09 05:53:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:53:11,993 INFO L93 Difference]: Finished difference Result 317 states and 333 transitions. [2024-11-09 05:53:11,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 05:53:11,994 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 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 129 [2024-11-09 05:53:11,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:53:11,996 INFO L225 Difference]: With dead ends: 317 [2024-11-09 05:53:11,997 INFO L226 Difference]: Without dead ends: 310 [2024-11-09 05:53:11,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=534, Invalid=872, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 05:53:11,999 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 374 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:53:11,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 85 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:53:12,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-09 05:53:12,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 159. [2024-11-09 05:53:12,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.018987341772152) internal successors, (161), 158 states have internal predecessors, (161), 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) [2024-11-09 05:53:12,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2024-11-09 05:53:12,016 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 129 [2024-11-09 05:53:12,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:53:12,017 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2024-11-09 05:53:12,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 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) [2024-11-09 05:53:12,017 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2024-11-09 05:53:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-09 05:53:12,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:53:12,020 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:53:12,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:53:12,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 05:53:12,220 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:53:12,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:53:12,221 INFO L85 PathProgramCache]: Analyzing trace with hash -585728396, now seen corresponding path program 6 times [2024-11-09 05:53:12,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:53:12,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591492900] [2024-11-09 05:53:12,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:53:12,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:53:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:53:13,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2980 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2024-11-09 05:53:13,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:53:13,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591492900] [2024-11-09 05:53:13,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591492900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:53:13,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025878545] [2024-11-09 05:53:13,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:53:13,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:13,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:53:13,975 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:53:13,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:53:14,230 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:53:14,230 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:53:14,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 05:53:14,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:53:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2980 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2024-11-09 05:53:14,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:53:17,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2980 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2024-11-09 05:53:17,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025878545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:53:17,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1318594384] [2024-11-09 05:53:17,942 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:53:17,942 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:53:17,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:53:17,944 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:53:17,944 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:53:18,281 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:53:18,723 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4623#(and (<= 1 |#StackHeapBarrier|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) 4) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0))) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#b~0#1.base|) (= |ULTIMATE.start_main_~i~0#1| 1) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~j~0#1| 0))' at error location [2024-11-09 05:53:18,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:53:18,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:53:18,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 50, 50] total 122 [2024-11-09 05:53:18,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087519847] [2024-11-09 05:53:18,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:53:18,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-11-09 05:53:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:53:18,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-11-09 05:53:18,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7784, Invalid=9246, Unknown=0, NotChecked=0, Total=17030 [2024-11-09 05:53:18,740 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand has 122 states, 122 states have (on average 2.1557377049180326) internal successors, (263), 122 states have internal predecessors, (263), 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) [2024-11-09 05:53:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:53:20,851 INFO L93 Difference]: Finished difference Result 575 states and 656 transitions. [2024-11-09 05:53:20,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-11-09 05:53:20,854 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.1557377049180326) internal successors, (263), 122 states have internal predecessors, (263), 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 157 [2024-11-09 05:53:20,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:53:20,856 INFO L225 Difference]: With dead ends: 575 [2024-11-09 05:53:20,857 INFO L226 Difference]: Without dead ends: 514 [2024-11-09 05:53:20,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9906 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=7784, Invalid=9246, Unknown=0, NotChecked=0, Total=17030 [2024-11-09 05:53:20,864 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 944 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:53:20,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 154 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 05:53:20,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-11-09 05:53:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 315. [2024-11-09 05:53:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.0095541401273886) internal successors, (317), 314 states have internal predecessors, (317), 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) [2024-11-09 05:53:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 317 transitions. [2024-11-09 05:53:20,898 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 317 transitions. Word has length 157 [2024-11-09 05:53:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:53:20,898 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 317 transitions. [2024-11-09 05:53:20,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.1557377049180326) internal successors, (263), 122 states have internal predecessors, (263), 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) [2024-11-09 05:53:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 317 transitions. [2024-11-09 05:53:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-09 05:53:20,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:53:20,908 INFO L215 NwaCegarLoop]: trace histogram [119, 119, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:53:20,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 05:53:21,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:21,109 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:53:21,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:53:21,110 INFO L85 PathProgramCache]: Analyzing trace with hash 934355930, now seen corresponding path program 7 times [2024-11-09 05:53:21,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:53:21,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051575394] [2024-11-09 05:53:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:53:21,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:53:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:53:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 15250 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 14161 trivial. 0 not checked. [2024-11-09 05:53:24,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:53:24,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051575394] [2024-11-09 05:53:24,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051575394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:53:24,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019730053] [2024-11-09 05:53:24,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:53:24,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:24,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:53:24,108 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:53:24,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:53:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:53:24,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-09 05:53:24,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:53:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 15250 backedges. 0 proven. 14161 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2024-11-09 05:53:26,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:53:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 15250 backedges. 0 proven. 14161 refuted. 0 times theorem prover too weak. 1089 trivial. 0 not checked. [2024-11-09 05:53:36,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019730053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:53:36,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [486772203] [2024-11-09 05:53:36,739 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-09 05:53:36,739 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:53:36,739 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:53:36,739 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:53:36,740 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:53:36,972 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:53:37,327 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8028#(and (<= 1 |#StackHeapBarrier|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) 4) (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) 0))) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 2 |ULTIMATE.start_main_~#b~0#1.base|) (= |ULTIMATE.start_main_~i~0#1| 1) (<= 2 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~j~0#1| 0))' at error location [2024-11-09 05:53:37,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:53:37,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:53:37,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 121, 121] total 263 [2024-11-09 05:53:37,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118731731] [2024-11-09 05:53:37,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:53:37,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 263 states [2024-11-09 05:53:37,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:53:37,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 263 interpolants. [2024-11-09 05:53:37,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35279, Invalid=38433, Unknown=0, NotChecked=0, Total=73712 [2024-11-09 05:53:37,348 INFO L87 Difference]: Start difference. First operand 315 states and 317 transitions. Second operand has 263 states, 263 states have (on average 2.1330798479087454) internal successors, (561), 263 states have internal predecessors, (561), 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) [2024-11-09 05:53:46,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:53:46,968 INFO L93 Difference]: Finished difference Result 991 states and 1150 transitions. [2024-11-09 05:53:46,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2024-11-09 05:53:46,969 INFO L78 Accepts]: Start accepts. Automaton has has 263 states, 263 states have (on average 2.1330798479087454) internal successors, (561), 263 states have internal predecessors, (561), 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 313 [2024-11-09 05:53:46,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:53:46,973 INFO L225 Difference]: With dead ends: 991 [2024-11-09 05:53:46,973 INFO L226 Difference]: Without dead ends: 916 [2024-11-09 05:53:46,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 973 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46328 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=35279, Invalid=38433, Unknown=0, NotChecked=0, Total=73712 [2024-11-09 05:53:46,980 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1395 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:53:46,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 298 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 05:53:46,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-09 05:53:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 627. [2024-11-09 05:53:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.0047923322683705) internal successors, (629), 626 states have internal predecessors, (629), 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) [2024-11-09 05:53:47,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 629 transitions. [2024-11-09 05:53:47,011 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 629 transitions. Word has length 313 [2024-11-09 05:53:47,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:53:47,012 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 629 transitions. [2024-11-09 05:53:47,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 263 states, 263 states have (on average 2.1330798479087454) internal successors, (561), 263 states have internal predecessors, (561), 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) [2024-11-09 05:53:47,013 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 629 transitions. [2024-11-09 05:53:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2024-11-09 05:53:47,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:53:47,031 INFO L215 NwaCegarLoop]: trace histogram [260, 260, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:53:47,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 05:53:47,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:47,232 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:53:47,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:53:47,232 INFO L85 PathProgramCache]: Analyzing trace with hash 766100998, now seen corresponding path program 8 times [2024-11-09 05:53:47,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:53:47,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547422647] [2024-11-09 05:53:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:53:47,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:53:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:53:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 69904 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 67600 trivial. 0 not checked. [2024-11-09 05:53:53,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:53:53,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547422647] [2024-11-09 05:53:53,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547422647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:53:53,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193437471] [2024-11-09 05:53:53,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:53:53,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:53:53,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:53:53,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:53:53,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3fca3e8-ee09-401a-9b8d-a8d68af89ee2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process