./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2 --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 751e67420c89b9d0e6d5639ea75482b8ab104ec2c6d8190aacf202ff4b3b3104 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:34:21,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:34:21,239 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:34:21,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:34:21,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:34:21,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:34:21,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:34:21,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:34:21,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:34:21,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:34:21,287 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:34:21,287 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:34:21,288 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:34:21,288 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:34:21,290 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:34:21,291 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:34:21,291 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:34:21,292 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:34:21,292 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:34:21,292 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:34:21,297 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:34:21,297 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:34:21,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:34:21,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:34:21,300 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:34:21,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:34:21,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:34:21,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:34:21,301 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:34:21,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:34:21,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:34:21,303 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:34:21,304 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:34:21,304 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:34:21,304 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:34:21,304 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:34:21,305 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:34:21,305 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:34:21,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:34:21,306 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:34:21,306 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:34:21,306 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:34:21,307 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:34:21,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:34:21,308 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:34:21,308 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:34:21,308 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:34:21,308 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_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 751e67420c89b9d0e6d5639ea75482b8ab104ec2c6d8190aacf202ff4b3b3104 [2024-11-02 12:34:21,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:34:21,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:34:21,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:34:21,663 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:34:21,664 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:34:21,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i Unable to find full path for "g++" [2024-11-02 12:34:23,861 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:34:24,115 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:34:24,118 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i [2024-11-02 12:34:24,134 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/data/eedfd3897/f4521365729347c988f9eba00ff63613/FLAG61e0efd84 [2024-11-02 12:34:24,157 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/data/eedfd3897/f4521365729347c988f9eba00ff63613 [2024-11-02 12:34:24,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:34:24,164 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:34:24,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:34:24,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:34:24,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:34:24,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a7c3d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24, skipping insertion in model container [2024-11-02 12:34:24,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,215 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:34:24,542 WARN L251 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_af2fd11a-9f76-4e23-b998-c1a720974f10/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i[832,845] [2024-11-02 12:34:24,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:34:24,621 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:34:24,642 WARN L251 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_af2fd11a-9f76-4e23-b998-c1a720974f10/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-2.i[832,845] [2024-11-02 12:34:24,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:34:24,696 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:34:24,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24 WrapperNode [2024-11-02 12:34:24,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:34:24,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:34:24,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:34:24,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:34:24,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,775 INFO L138 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 138 [2024-11-02 12:34:24,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:34:24,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:34:24,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:34:24,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:34:24,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,804 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,819 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,838 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:34:24,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:34:24,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:34:24,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:34:24,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24" (1/1) ... [2024-11-02 12:34:24,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:34:24,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:24,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:34:24,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:34:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:34:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:34:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:34:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:34:24,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:34:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:34:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:34:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 12:34:24,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 12:34:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:34:25,070 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:34:25,074 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:34:25,416 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-02 12:34:25,421 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:34:25,548 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:34:25,549 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-02 12:34:25,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:34:25 BoogieIcfgContainer [2024-11-02 12:34:25,550 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:34:25,553 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:34:25,554 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:34:25,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:34:25,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:34:24" (1/3) ... [2024-11-02 12:34:25,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325fd5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:34:25, skipping insertion in model container [2024-11-02 12:34:25,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:34:24" (2/3) ... [2024-11-02 12:34:25,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325fd5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:34:25, skipping insertion in model container [2024-11-02 12:34:25,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:34:25" (3/3) ... [2024-11-02 12:34:25,563 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_ground-2.i [2024-11-02 12:34:25,582 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:34:25,583 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:34:25,658 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:34:25,668 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;@11bda0d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:34:25,669 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:34:25,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:34:25,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:34:25,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:25,682 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:25,683 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:25,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:25,691 INFO L85 PathProgramCache]: Analyzing trace with hash -917584139, now seen corresponding path program 1 times [2024-11-02 12:34:25,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:25,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070011307] [2024-11-02 12:34:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:25,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:25,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:25,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070011307] [2024-11-02 12:34:25,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070011307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:25,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:34:25,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:34:25,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832003342] [2024-11-02 12:34:25,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:25,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:34:25,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:34:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:34:26,010 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:26,134 INFO L93 Difference]: Finished difference Result 51 states and 81 transitions. [2024-11-02 12:34:26,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:34:26,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-02 12:34:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:26,145 INFO L225 Difference]: With dead ends: 51 [2024-11-02 12:34:26,146 INFO L226 Difference]: Without dead ends: 30 [2024-11-02 12:34:26,149 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 [2024-11-02 12:34:26,156 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:26,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:26,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-02 12:34:26,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2024-11-02 12:34:26,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:34:26,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions. [2024-11-02 12:34:26,205 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 8 [2024-11-02 12:34:26,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:26,205 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 31 transitions. [2024-11-02 12:34:26,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2024-11-02 12:34:26,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:34:26,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:26,207 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:26,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:34:26,207 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:26,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:26,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1778615702, now seen corresponding path program 1 times [2024-11-02 12:34:26,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:26,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150615463] [2024-11-02 12:34:26,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:26,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:26,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:26,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150615463] [2024-11-02 12:34:26,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150615463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:26,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744576125] [2024-11-02 12:34:26,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:26,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:26,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:26,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:26,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:34:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:26,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:34:26,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:26,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:26,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:26,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744576125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:26,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2107623681] [2024-11-02 12:34:26,638 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-02 12:34:26,639 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:26,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:26,654 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:26,654 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:27,197 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:27,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2107623681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:27,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:27,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3, 3] total 8 [2024-11-02 12:34:27,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068443296] [2024-11-02 12:34:27,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:27,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:34:27,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:27,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:34:27,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:34:27,279 INFO L87 Difference]: Start difference. First operand 22 states and 31 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:27,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:27,361 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2024-11-02 12:34:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:34:27,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-02 12:34:27,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:27,365 INFO L225 Difference]: With dead ends: 38 [2024-11-02 12:34:27,365 INFO L226 Difference]: Without dead ends: 19 [2024-11-02 12:34:27,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:34:27,368 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:27,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:27,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-02 12:34:27,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-02 12:34:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:34:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2024-11-02 12:34:27,383 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2024-11-02 12:34:27,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:27,386 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-11-02 12:34:27,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:27,386 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2024-11-02 12:34:27,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-02 12:34:27,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:27,387 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:27,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:34:27,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:27,592 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:27,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:27,595 INFO L85 PathProgramCache]: Analyzing trace with hash 809403823, now seen corresponding path program 1 times [2024-11-02 12:34:27,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:27,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457978062] [2024-11-02 12:34:27,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:27,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:27,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:34:27,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:27,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457978062] [2024-11-02 12:34:27,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457978062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:27,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361965469] [2024-11-02 12:34:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:27,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:27,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:27,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:27,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:34:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:27,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 12:34:27,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:27,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:34:27,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:34:27,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361965469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:27,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:34:27,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-02 12:34:27,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515017835] [2024-11-02 12:34:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:27,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:34:27,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:34:27,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:34:27,987 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:28,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:28,046 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2024-11-02 12:34:28,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:34:28,047 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-02 12:34:28,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:28,048 INFO L225 Difference]: With dead ends: 38 [2024-11-02 12:34:28,048 INFO L226 Difference]: Without dead ends: 24 [2024-11-02 12:34:28,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:34:28,051 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:28,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:34:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-02 12:34:28,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2024-11-02 12:34:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:34:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2024-11-02 12:34:28,063 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 12 [2024-11-02 12:34:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:28,063 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2024-11-02 12:34:28,064 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:28,068 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2024-11-02 12:34:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-02 12:34:28,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:28,068 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:28,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:34:28,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:28,272 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:28,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:28,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1766431364, now seen corresponding path program 1 times [2024-11-02 12:34:28,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:28,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753952617] [2024-11-02 12:34:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:28,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:34:28,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:28,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753952617] [2024-11-02 12:34:28,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753952617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:28,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803109137] [2024-11-02 12:34:28,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:28,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:28,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:28,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:28,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:34:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:28,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:34:28,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:34:28,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:34:28,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803109137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:28,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [602037074] [2024-11-02 12:34:28,687 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-02 12:34:28,691 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:28,691 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:28,691 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:28,691 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:29,364 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:29,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [602037074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:34:29,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:29,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3, 3] total 12 [2024-11-02 12:34:29,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28661489] [2024-11-02 12:34:29,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:34:29,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:34:29,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:29,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:34:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:34:29,807 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:30,080 INFO L93 Difference]: Finished difference Result 43 states and 59 transitions. [2024-11-02 12:34:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 12:34:30,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-02 12:34:30,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:30,081 INFO L225 Difference]: With dead ends: 43 [2024-11-02 12:34:30,082 INFO L226 Difference]: Without dead ends: 29 [2024-11-02 12:34:30,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:34:30,083 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:30,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:30,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-02 12:34:30,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2024-11-02 12:34:30,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:34:30,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-11-02 12:34:30,091 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 16 [2024-11-02 12:34:30,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:30,091 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-11-02 12:34:30,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-11-02 12:34:30,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:34:30,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:30,093 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:30,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 12:34:30,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:30,294 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:30,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:30,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1666995883, now seen corresponding path program 1 times [2024-11-02 12:34:30,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:30,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257600519] [2024-11-02 12:34:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:30,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:34:30,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:30,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257600519] [2024-11-02 12:34:30,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257600519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:30,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221331163] [2024-11-02 12:34:30,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:30,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:30,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:30,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:30,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 12:34:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:30,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:34:30,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:30,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:34:30,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 12:34:30,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221331163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:30,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1391659996] [2024-11-02 12:34:30,527 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-02 12:34:30,529 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:30,530 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:30,530 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:30,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:31,242 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 97 for LOIs [2024-11-02 12:34:31,333 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:32,727 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '760#(and (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_ULTIMATE.start_main_#t~ret14#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_#t~ret14#1_32| Int) (|v_ULTIMATE.start_main_#t~mem13#1_35| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_#t~mem13#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_main_~v~0#1_71| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_~set#1.base_26| Int) (|v_ULTIMATE.start_insert_~size#1_26| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_elem_exists_#res#1_27| Int) (|v_ULTIMATE.start_elem_exists_~size#1_29| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~value#1_25| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_25| Int) (|v_#memory_int_63| (Array Int (Array Int Int))) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_25| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_~value#1_26| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_36| Int) (|v_ULTIMATE.start_main_~n~0#1_52| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_~set#1.offset_26| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_insert_#in~size#1_25| Int) (|v_ULTIMATE.start_insert_#res#1_25| Int)) (and (or (and (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#res#1_25|) (= |v_ULTIMATE.start_insert_~value#1_26| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_1|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_1| |v_ULTIMATE.start_insert_~set#1.offset_26|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#in~size#1_25|) (= |v_ULTIMATE.start_main_#t~mem13#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_#t~mem13#1_35|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#in~value#1_25|) (= |#memory_int| |v_#memory_int_63|) (not (= |v_ULTIMATE.start_elem_exists_#res#1_27| 0)) (= |v_ULTIMATE.start_main_#t~ret14#1_32| |v_ULTIMATE.start_main_#t~ret14#1_BEFORE_CALL_1|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_1| |v_ULTIMATE.start_insert_~size#1_26|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_1| |v_ULTIMATE.start_insert_~set#1.base_26|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_1| |v_ULTIMATE.start_insert_#in~set#1.offset_25|) (= |v_ULTIMATE.start_insert_#in~set#1.base_25| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_1|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| |v_ULTIMATE.start_main_~n~0#1_52|)) (and (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| (+ |v_ULTIMATE.start_main_~n~0#1_52| 1)) (= |v_ULTIMATE.start_elem_exists_#res#1_27| 0) (= |#memory_int| (store |v_#memory_int_63| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1| (store (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1| (- 4) (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| 4)) (select (select |v_#memory_int_63| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_1|) (+ (* |v_ULTIMATE.start_main_~v~0#1_71| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_1|))))) (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1| 2147483647))) (or (and (= |v_ULTIMATE.start_elem_exists_#res#1_27| 1) (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_29|) (= |v_ULTIMATE.start_elem_exists_~i~0#1_36| 0)) (= |v_ULTIMATE.start_elem_exists_#res#1_27| 0)) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_71|) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_1|) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_1|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_1| 4))))))' at error location [2024-11-02 12:34:32,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:32,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:32,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-02 12:34:32,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108747384] [2024-11-02 12:34:32,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:32,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:34:32,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:32,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:34:32,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=243, Unknown=2, NotChecked=0, Total=306 [2024-11-02 12:34:32,731 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:32,835 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2024-11-02 12:34:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:34:32,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-02 12:34:32,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:32,837 INFO L225 Difference]: With dead ends: 66 [2024-11-02 12:34:32,837 INFO L226 Difference]: Without dead ends: 44 [2024-11-02 12:34:32,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=61, Invalid=243, Unknown=2, NotChecked=0, Total=306 [2024-11-02 12:34:32,839 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:32,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 29 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-02 12:34:32,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 28. [2024-11-02 12:34:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:34:32,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-11-02 12:34:32,854 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 20 [2024-11-02 12:34:32,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:32,855 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-11-02 12:34:32,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-02 12:34:32,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:34:32,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:32,857 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:32,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 12:34:33,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:33,059 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:33,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash -964089174, now seen corresponding path program 2 times [2024-11-02 12:34:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287046422] [2024-11-02 12:34:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:33,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-02 12:34:33,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:33,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287046422] [2024-11-02 12:34:33,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287046422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:33,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069778546] [2024-11-02 12:34:33,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:34:33,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:33,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:33,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:33,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 12:34:33,275 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-02 12:34:33,275 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:34:33,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:34:33,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-02 12:34:33,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-02 12:34:33,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069778546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:33,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1588234813] [2024-11-02 12:34:33,324 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-02 12:34:33,324 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:33,324 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:33,324 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:33,324 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:33,916 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 97 for LOIs [2024-11-02 12:34:33,994 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:37,289 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1068#(and (exists ((|v_ULTIMATE.start_insert_~value#1_32| Int) (|v_#memory_int_76| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_#t~mem13#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_31| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_47| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_#t~ret14#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_#t~ret14#1_38| Int) (|v_ULTIMATE.start_insert_#in~size#1_31| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~set#1.offset_32| Int) (|v_ULTIMATE.start_elem_exists_~size#1_40| Int) (|v_ULTIMATE.start_insert_~size#1_32| Int) (|v_ULTIMATE.start_insert_#res#1_31| Int) (|v_ULTIMATE.start_insert_~set#1.base_32| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~n~0#1_58| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_~v~0#1_86| Int) (|v_ULTIMATE.start_elem_exists_#res#1_35| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_31| Int) (|v_ULTIMATE.start_insert_#in~value#1_31| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_main_#t~mem13#1_41| Int)) (and (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2|) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_86|) (or (and (not (= |v_ULTIMATE.start_elem_exists_#res#1_35| 0)) (= |v_ULTIMATE.start_insert_~value#1_32| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_2|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_insert_~set#1.base_32|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_2| |v_ULTIMATE.start_insert_~set#1.offset_32|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#in~set#1.offset_31|) (= |v_ULTIMATE.start_main_#t~mem13#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_#t~mem13#1_41|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_~size#1_32|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#in~value#1_31|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#in~size#1_31|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_2| |v_ULTIMATE.start_insert_#res#1_31|) (= |v_ULTIMATE.start_insert_#in~set#1.base_31| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_2|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~n~0#1_58|) (= |#memory_int| |v_#memory_int_76|) (= |v_ULTIMATE.start_main_#t~ret14#1_38| |v_ULTIMATE.start_main_#t~ret14#1_BEFORE_CALL_2|)) (and (= |v_ULTIMATE.start_elem_exists_#res#1_35| 0) (= |#memory_int| (store |v_#memory_int_76| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2| (store (select |v_#memory_int_76| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2|) (+ (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| 4) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2| (- 4)) (select (select |v_#memory_int_76| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_2|) (+ (* |v_ULTIMATE.start_main_~v~0#1_86| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_2|))))) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| (+ |v_ULTIMATE.start_main_~n~0#1_58| 1)) (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_2| 2147483647))) (or (= |v_ULTIMATE.start_elem_exists_#res#1_35| 0) (and (= |v_ULTIMATE.start_elem_exists_#res#1_35| 1) (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_40|) (= |v_ULTIMATE.start_elem_exists_~i~0#1_47| 0))) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2| 4)) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_2|)))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-02 12:34:37,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:37,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:37,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-02 12:34:37,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320546057] [2024-11-02 12:34:37,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:37,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:34:37,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:37,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:34:37,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=289, Unknown=2, NotChecked=0, Total=342 [2024-11-02 12:34:37,292 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:37,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:37,418 INFO L93 Difference]: Finished difference Result 66 states and 89 transitions. [2024-11-02 12:34:37,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:34:37,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-02 12:34:37,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:37,419 INFO L225 Difference]: With dead ends: 66 [2024-11-02 12:34:37,419 INFO L226 Difference]: Without dead ends: 47 [2024-11-02 12:34:37,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=51, Invalid=289, Unknown=2, NotChecked=0, Total=342 [2024-11-02 12:34:37,421 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:37,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 46 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:34:37,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-02 12:34:37,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2024-11-02 12:34:37,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 42 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:34:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2024-11-02 12:34:37,444 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 23 [2024-11-02 12:34:37,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:37,445 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2024-11-02 12:34:37,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:37,445 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2024-11-02 12:34:37,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-02 12:34:37,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:37,446 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:37,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 12:34:37,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-02 12:34:37,647 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:37,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:37,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2101592878, now seen corresponding path program 3 times [2024-11-02 12:34:37,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:37,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208246922] [2024-11-02 12:34:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:37,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-02 12:34:37,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208246922] [2024-11-02 12:34:37,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208246922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63882078] [2024-11-02 12:34:37,903 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-02 12:34:37,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:37,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:37,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:37,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 12:34:38,044 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-02 12:34:38,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:34:38,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:34:38,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:38,075 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-02 12:34:38,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-02 12:34:38,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63882078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:38,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [568716152] [2024-11-02 12:34:38,168 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-02 12:34:38,169 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:38,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:38,171 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:38,171 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:38,684 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 97 for LOIs [2024-11-02 12:34:38,776 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:40,081 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1462#(and (exists ((|v_#memory_int_98| (Array Int (Array Int Int))) (|v_ULTIMATE.start_insert_~set#1.base_40| Int) (|v_ULTIMATE.start_insert_~size#1_40| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_#t~ret14#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~n~0#1_66| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_39| Int) (|v_ULTIMATE.start_main_~v~0#1_105| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_elem_exists_#res#1_47| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#res#1_39| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_62| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#in~size#1_39| Int) (|v_ULTIMATE.start_main_#t~ret14#1_46| Int) (|v_ULTIMATE.start_insert_~value#1_40| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#in~value#1_39| Int) (|v_ULTIMATE.start_main_#t~mem13#1_49| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_elem_exists_~size#1_55| Int) (|v_ULTIMATE.start_insert_~set#1.offset_40| Int) (|v_ULTIMATE.start_main_#t~mem13#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_39| Int)) (and (or (= |v_ULTIMATE.start_elem_exists_#res#1_47| 0) (and (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_55|) (= |v_ULTIMATE.start_elem_exists_#res#1_47| 1) (= |v_ULTIMATE.start_elem_exists_~i~0#1_62| 0))) (or (and (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_3| |v_ULTIMATE.start_insert_~set#1.offset_40|) (= |#memory_int| |v_#memory_int_98|) (= |v_ULTIMATE.start_insert_~value#1_40| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_3|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_insert_~set#1.base_40|) (= |v_ULTIMATE.start_insert_#in~set#1.base_39| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_3|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~n~0#1_66|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#in~size#1_39|) (not (= |v_ULTIMATE.start_elem_exists_#res#1_47| 0)) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#in~set#1.offset_39|) (= |v_ULTIMATE.start_main_#t~mem13#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_#t~mem13#1_49|) (= |v_ULTIMATE.start_main_#t~ret14#1_46| |v_ULTIMATE.start_main_#t~ret14#1_BEFORE_CALL_3|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#in~value#1_39|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_#res#1_39|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_3| |v_ULTIMATE.start_insert_~size#1_40|)) (and (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| (+ |v_ULTIMATE.start_main_~n~0#1_66| 1)) (= |#memory_int| (store |v_#memory_int_98| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3| (store (select |v_#memory_int_98| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3| (- 4) (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| 4)) (select (select |v_#memory_int_98| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_3|) (+ (* |v_ULTIMATE.start_main_~v~0#1_105| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_3|))))) (= |v_ULTIMATE.start_elem_exists_#res#1_47| 0) (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3| 2147483647))) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_3|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_3| 4))) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_3|) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_105|))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-02 12:34:40,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:40,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:40,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-02 12:34:40,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772599100] [2024-11-02 12:34:40,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:40,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 12:34:40,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:40,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 12:34:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=414, Unknown=2, NotChecked=0, Total=552 [2024-11-02 12:34:40,085 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:40,290 INFO L93 Difference]: Finished difference Result 130 states and 181 transitions. [2024-11-02 12:34:40,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:34:40,290 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-02 12:34:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:40,291 INFO L225 Difference]: With dead ends: 130 [2024-11-02 12:34:40,291 INFO L226 Difference]: Without dead ends: 91 [2024-11-02 12:34:40,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=136, Invalid=414, Unknown=2, NotChecked=0, Total=552 [2024-11-02 12:34:40,293 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 59 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:40,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 38 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:34:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-02 12:34:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 51. [2024-11-02 12:34:40,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:34:40,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2024-11-02 12:34:40,305 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 32 [2024-11-02 12:34:40,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:40,305 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2024-11-02 12:34:40,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:40,306 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2024-11-02 12:34:40,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-02 12:34:40,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:40,307 INFO L215 NwaCegarLoop]: trace histogram [10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:40,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-02 12:34:40,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-02 12:34:40,507 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:40,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:40,508 INFO L85 PathProgramCache]: Analyzing trace with hash -987236594, now seen corresponding path program 4 times [2024-11-02 12:34:40,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:40,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93196791] [2024-11-02 12:34:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:40,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-02 12:34:40,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:40,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93196791] [2024-11-02 12:34:40,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93196791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:40,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440651392] [2024-11-02 12:34:40,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-02 12:34:40,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:40,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:40,914 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:40,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 12:34:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:41,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-02 12:34:41,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-02 12:34:41,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-02 12:34:41,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440651392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:41,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [29658142] [2024-11-02 12:34:41,447 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-02 12:34:41,447 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:41,448 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:41,448 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:41,448 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:41,947 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 97 for LOIs [2024-11-02 12:34:42,025 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:42,388 WARN L873 $PredicateComparison]: unable to prove that (or (and (<= 2 |c_ULTIMATE.start_main_~#values~0#1.base|) (<= 2 |c_ULTIMATE.start_main_~#set~0#1.base|) (<= 1 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_main_~v~0#1| 0) (= |c_ULTIMATE.start_main_~#values~0#1.offset| 0) (= |c_ULTIMATE.start_main_~n~0#1| 0) (= |c_ULTIMATE.start_main_~#set~0#1.offset| 0)) (exists ((|v_ULTIMATE.start_elem_exists_~size#1_70| Int) (|v_ULTIMATE.start_main_#t~ret14#1_54| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_47| Int) (|v_ULTIMATE.start_main_#t~mem13#1_57| Int) (|v_#memory_int_126| (Array Int (Array Int Int))) (|v_ULTIMATE.start_elem_exists_~i~0#1_77| Int) (|v_ULTIMATE.start_main_~n~0#1_74| Int) (|v_ULTIMATE.start_insert_~value#1_48| Int) (|v_ULTIMATE.start_insert_~set#1.base_48| Int) (|v_ULTIMATE.start_insert_~size#1_48| Int) (|v_ULTIMATE.start_elem_exists_#res#1_59| Int) (|v_ULTIMATE.start_insert_~set#1.offset_48| Int) (|v_ULTIMATE.start_insert_#in~size#1_47| Int) (|v_ULTIMATE.start_insert_#in~value#1_47| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_47| Int) (|v_ULTIMATE.start_insert_#res#1_47| Int)) (let ((.cse0 (= |v_ULTIMATE.start_elem_exists_#res#1_59| 0))) (and (or .cse0 (and (= |v_ULTIMATE.start_elem_exists_~i~0#1_77| 0) (= |v_ULTIMATE.start_elem_exists_#res#1_59| 1) (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_70|))) (or (and (= |v_ULTIMATE.start_insert_~set#1.base_48| |c_ULTIMATE.start_insert_~set#1.base|) (= |c_#memory_int| |v_#memory_int_126|) (= |c_ULTIMATE.start_main_#t~mem13#1| |v_ULTIMATE.start_main_#t~mem13#1_57|) (not .cse0) (= |c_ULTIMATE.start_insert_#in~set#1.offset| |v_ULTIMATE.start_insert_#in~set#1.offset_47|) (= |c_ULTIMATE.start_insert_#in~size#1| |v_ULTIMATE.start_insert_#in~size#1_47|) (= |c_ULTIMATE.start_insert_~set#1.offset| |v_ULTIMATE.start_insert_~set#1.offset_48|) (= |c_ULTIMATE.start_main_#t~ret14#1| |v_ULTIMATE.start_main_#t~ret14#1_54|) (= |c_ULTIMATE.start_insert_#in~value#1| |v_ULTIMATE.start_insert_#in~value#1_47|) (= |v_ULTIMATE.start_insert_#in~set#1.base_47| |c_ULTIMATE.start_insert_#in~set#1.base|) (= |v_ULTIMATE.start_insert_~size#1_48| |c_ULTIMATE.start_insert_~size#1|) (= |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~n~0#1_74|) (= |c_ULTIMATE.start_insert_#res#1| |v_ULTIMATE.start_insert_#res#1_47|) (= |c_ULTIMATE.start_insert_~value#1| |v_ULTIMATE.start_insert_~value#1_48|)) (and (= |c_ULTIMATE.start_main_~n~0#1| (+ |v_ULTIMATE.start_main_~n~0#1_74| 1)) (<= |c_ULTIMATE.start_main_~n~0#1| 2147483647) (= (store |v_#memory_int_126| |c_ULTIMATE.start_main_~#set~0#1.base| (store (select |v_#memory_int_126| |c_ULTIMATE.start_main_~#set~0#1.base|) (+ |c_ULTIMATE.start_main_~#set~0#1.offset| (- 4) (* |c_ULTIMATE.start_main_~n~0#1| 4)) (select (select |v_#memory_int_126| |c_ULTIMATE.start_main_~#values~0#1.base|) (+ (* |c_ULTIMATE.start_main_~v~0#1| 4) (- 4) |c_ULTIMATE.start_main_~#values~0#1.offset|)))) |c_#memory_int|) .cse0 (<= 0 (+ |c_ULTIMATE.start_main_~n~0#1| 2147483648)))) (<= |v_ULTIMATE.start_elem_exists_#res#1_59| 2147483647) (<= 0 (+ |v_ULTIMATE.start_elem_exists_#res#1_59| 2147483648)))))) is different from true [2024-11-02 12:34:43,390 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2028#(and (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_ULTIMATE.start_main_#t~ret14#1_54| Int) (|v_ULTIMATE.start_main_#t~mem13#1_57| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_#t~ret14#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~v~0#1_124| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~set#1.base_48| Int) (|v_ULTIMATE.start_insert_~size#1_48| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#in~value#1_47| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_47| Int) (|v_ULTIMATE.start_elem_exists_~size#1_70| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_47| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_77| Int) (|v_#memory_int_126| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~n~0#1_74| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~value#1_48| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_elem_exists_#res#1_59| Int) (|v_ULTIMATE.start_insert_~set#1.offset_48| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#in~size#1_47| Int) (|v_ULTIMATE.start_main_#t~mem13#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_insert_#res#1_47| Int)) (and (<= 100000 |v_ULTIMATE.start_main_~v~0#1_124|) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4|) (or (= |v_ULTIMATE.start_elem_exists_#res#1_59| 0) (and (= |v_ULTIMATE.start_elem_exists_~i~0#1_77| 0) (= |v_ULTIMATE.start_elem_exists_#res#1_59| 1) (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_70|))) (or (and (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| 2147483647) (= |#memory_int| (store |v_#memory_int_126| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4| (store (select |v_#memory_int_126| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4| (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| 4) (- 4)) (select (select |v_#memory_int_126| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_4|) (+ (* |v_ULTIMATE.start_main_~v~0#1_124| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_4|))))) (= |v_ULTIMATE.start_elem_exists_#res#1_59| 0) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| (+ |v_ULTIMATE.start_main_~n~0#1_74| 1))) (and (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#in~set#1.offset_47|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_4| |v_ULTIMATE.start_insert_~set#1.base_48|) (= |v_ULTIMATE.start_insert_~value#1_48| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_4|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~n~0#1_74|) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#res#1_47|) (not (= |v_ULTIMATE.start_elem_exists_#res#1_59| 0)) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_~size#1_48|) (= |v_ULTIMATE.start_main_#t~mem13#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_#t~mem13#1_57|) (= |v_ULTIMATE.start_insert_#in~set#1.base_47| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_4|) (= |#memory_int| |v_#memory_int_126|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#in~size#1_47|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_4| |v_ULTIMATE.start_insert_~set#1.offset_48|) (= |v_ULTIMATE.start_main_#t~ret14#1_54| |v_ULTIMATE.start_main_#t~ret14#1_BEFORE_CALL_4|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_4| |v_ULTIMATE.start_insert_#in~value#1_47|))) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_4| 4))))))' at error location [2024-11-02 12:34:43,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:43,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:43,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2024-11-02 12:34:43,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112231250] [2024-11-02 12:34:43,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:43,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-02 12:34:43,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:43,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-02 12:34:43,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=908, Unknown=7, NotChecked=70, Total=1406 [2024-11-02 12:34:43,394 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 25 states, 25 states have (on average 1.6) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:43,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:43,821 INFO L93 Difference]: Finished difference Result 190 states and 271 transitions. [2024-11-02 12:34:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-02 12:34:43,822 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-02 12:34:43,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:43,824 INFO L225 Difference]: With dead ends: 190 [2024-11-02 12:34:43,824 INFO L226 Difference]: Without dead ends: 151 [2024-11-02 12:34:43,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=421, Invalid=908, Unknown=7, NotChecked=70, Total=1406 [2024-11-02 12:34:43,829 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 165 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:43,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 47 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 12:34:43,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-02 12:34:43,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 63. [2024-11-02 12:34:43,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 60 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:34:43,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2024-11-02 12:34:43,879 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 38 [2024-11-02 12:34:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:43,879 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2024-11-02 12:34:43,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 24 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:43,879 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2024-11-02 12:34:43,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-02 12:34:43,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:43,880 INFO L215 NwaCegarLoop]: trace histogram [22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:43,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-02 12:34:44,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:44,082 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:44,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:44,083 INFO L85 PathProgramCache]: Analyzing trace with hash 404956878, now seen corresponding path program 5 times [2024-11-02 12:34:44,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:44,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191209261] [2024-11-02 12:34:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:44,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-02 12:34:45,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:45,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191209261] [2024-11-02 12:34:45,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191209261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:45,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946029082] [2024-11-02 12:34:45,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-02 12:34:45,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:45,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:45,220 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:45,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-02 12:34:45,373 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-02 12:34:45,374 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:34:45,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 12:34:45,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-02 12:34:45,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-02 12:34:45,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946029082] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:45,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [481700910] [2024-11-02 12:34:45,674 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-02 12:34:45,674 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:45,674 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:45,675 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:45,675 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:46,199 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 97 for LOIs [2024-11-02 12:34:46,249 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:46,608 WARN L873 $PredicateComparison]: unable to prove that (or (and (<= 2 |c_ULTIMATE.start_main_~#values~0#1.base|) (<= 2 |c_ULTIMATE.start_main_~#set~0#1.base|) (<= 1 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_main_~v~0#1| 0) (= |c_ULTIMATE.start_main_~#values~0#1.offset| 0) (= |c_ULTIMATE.start_main_~n~0#1| 0) (= |c_ULTIMATE.start_main_~#set~0#1.offset| 0)) (exists ((|v_ULTIMATE.start_main_#t~mem13#1_65| Int) (|v_ULTIMATE.start_insert_#res#1_55| Int) (|v_ULTIMATE.start_main_#t~ret14#1_62| Int) (|v_ULTIMATE.start_main_~n~0#1_82| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_55| Int) (|v_ULTIMATE.start_insert_~value#1_56| Int) (|v_ULTIMATE.start_insert_~size#1_56| Int) (|v_ULTIMATE.start_insert_~set#1.base_56| Int) (|v_ULTIMATE.start_elem_exists_#res#1_71| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_55| Int) (|v_ULTIMATE.start_insert_#in~size#1_55| Int) (|v_#memory_int_144| (Array Int (Array Int Int))) (|v_ULTIMATE.start_elem_exists_~i~0#1_92| Int) (|v_ULTIMATE.start_elem_exists_~size#1_85| Int) (|v_ULTIMATE.start_insert_~set#1.offset_56| Int) (|v_ULTIMATE.start_insert_#in~value#1_55| Int)) (let ((.cse0 (= |v_ULTIMATE.start_elem_exists_#res#1_71| 0))) (and (<= |v_ULTIMATE.start_elem_exists_#res#1_71| 2147483647) (<= 0 (+ |v_ULTIMATE.start_elem_exists_#res#1_71| 2147483648)) (or .cse0 (and (= |v_ULTIMATE.start_elem_exists_~i~0#1_92| 0) (= |v_ULTIMATE.start_elem_exists_#res#1_71| 1) (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_85|))) (or (and (= (store |v_#memory_int_144| |c_ULTIMATE.start_main_~#set~0#1.base| (store (select |v_#memory_int_144| |c_ULTIMATE.start_main_~#set~0#1.base|) (+ |c_ULTIMATE.start_main_~#set~0#1.offset| (- 4) (* |c_ULTIMATE.start_main_~n~0#1| 4)) (select (select |v_#memory_int_144| |c_ULTIMATE.start_main_~#values~0#1.base|) (+ (* |c_ULTIMATE.start_main_~v~0#1| 4) (- 4) |c_ULTIMATE.start_main_~#values~0#1.offset|)))) |c_#memory_int|) (<= |c_ULTIMATE.start_main_~n~0#1| 2147483647) (= |c_ULTIMATE.start_main_~n~0#1| (+ |v_ULTIMATE.start_main_~n~0#1_82| 1)) .cse0 (<= 0 (+ |c_ULTIMATE.start_main_~n~0#1| 2147483648))) (and (= |c_ULTIMATE.start_insert_#res#1| |v_ULTIMATE.start_insert_#res#1_55|) (= |c_#memory_int| |v_#memory_int_144|) (= |c_ULTIMATE.start_insert_#in~size#1| |v_ULTIMATE.start_insert_#in~size#1_55|) (= |c_ULTIMATE.start_main_#t~mem13#1| |v_ULTIMATE.start_main_#t~mem13#1_65|) (= |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~n~0#1_82|) (= |c_ULTIMATE.start_insert_~set#1.offset| |v_ULTIMATE.start_insert_~set#1.offset_56|) (= |v_ULTIMATE.start_insert_~size#1_56| |c_ULTIMATE.start_insert_~size#1|) (= |c_ULTIMATE.start_insert_#in~set#1.offset| |v_ULTIMATE.start_insert_#in~set#1.offset_55|) (= |c_ULTIMATE.start_insert_~value#1| |v_ULTIMATE.start_insert_~value#1_56|) (= |v_ULTIMATE.start_insert_#in~set#1.base_55| |c_ULTIMATE.start_insert_#in~set#1.base|) (= |c_ULTIMATE.start_insert_#in~value#1| |v_ULTIMATE.start_insert_#in~value#1_55|) (= |v_ULTIMATE.start_insert_~set#1.base_56| |c_ULTIMATE.start_insert_~set#1.base|) (= |c_ULTIMATE.start_main_#t~ret14#1| |v_ULTIMATE.start_main_#t~ret14#1_62|) (not .cse0))))))) is different from true [2024-11-02 12:34:47,628 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2810#(and (exists ((|v_ULTIMATE.start_main_#t~ret14#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~n~0#1_82| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_55| Int) (|v_ULTIMATE.start_main_~v~0#1_147| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_~value#1_56| Int) (|v_ULTIMATE.start_insert_#in~size#1_55| Int) (|v_#memory_int_144| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_elem_exists_~size#1_85| Int) (|v_ULTIMATE.start_insert_~set#1.offset_56| Int) (|v_ULTIMATE.start_main_#t~mem13#1_65| Int) (|v_ULTIMATE.start_insert_#res#1_55| Int) (|v_ULTIMATE.start_main_#t~ret14#1_62| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_~size#1_56| Int) (|v_ULTIMATE.start_insert_~set#1.base_56| Int) (|v_ULTIMATE.start_elem_exists_#res#1_71| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_55| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_main_#t~mem13#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_92| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_insert_#in~value#1_55| Int)) (and (<= 100000 |v_ULTIMATE.start_main_~v~0#1_147|) (or (= |v_ULTIMATE.start_elem_exists_#res#1_71| 0) (and (= |v_ULTIMATE.start_elem_exists_~i~0#1_92| 0) (= |v_ULTIMATE.start_elem_exists_#res#1_71| 1) (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_85|))) (or (and (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| 2147483647) (= |#memory_int| (store |v_#memory_int_144| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5| (store (select |v_#memory_int_144| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5| (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| 4) (- 4)) (select (select |v_#memory_int_144| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_5|) (+ (* |v_ULTIMATE.start_main_~v~0#1_147| 4) (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_5|))))) (= |v_ULTIMATE.start_elem_exists_#res#1_71| 0) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| (+ |v_ULTIMATE.start_main_~n~0#1_82| 1))) (and (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#res#1_55|) (= |v_ULTIMATE.start_main_#t~ret14#1_62| |v_ULTIMATE.start_main_#t~ret14#1_BEFORE_CALL_5|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_5| |v_ULTIMATE.start_insert_~set#1.base_56|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_~size#1_56|) (= |#memory_int| |v_#memory_int_144|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_5| |v_ULTIMATE.start_insert_~set#1.offset_56|) (= |v_ULTIMATE.start_main_#t~mem13#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_#t~mem13#1_65|) (= |v_ULTIMATE.start_insert_#in~set#1.base_55| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_5|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#in~value#1_55|) (= |v_ULTIMATE.start_insert_~value#1_56| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_5|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~n~0#1_82|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#in~size#1_55|) (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_5| |v_ULTIMATE.start_insert_#in~set#1.offset_55|) (not (= |v_ULTIMATE.start_elem_exists_#res#1_71| 0)))) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5| 4)) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_5|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_5|)) (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_5|))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-02 12:34:47,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:47,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:47,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 7, 7] total 35 [2024-11-02 12:34:47,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780775948] [2024-11-02 12:34:47,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:47,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-02 12:34:47,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:47,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-02 12:34:47,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1610, Unknown=3, NotChecked=88, Total=2162 [2024-11-02 12:34:47,632 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:48,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:48,222 INFO L93 Difference]: Finished difference Result 245 states and 347 transitions. [2024-11-02 12:34:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-02 12:34:48,224 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-02 12:34:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:48,227 INFO L225 Difference]: With dead ends: 245 [2024-11-02 12:34:48,227 INFO L226 Difference]: Without dead ends: 206 [2024-11-02 12:34:48,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=461, Invalid=1610, Unknown=3, NotChecked=88, Total=2162 [2024-11-02 12:34:48,230 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 266 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:48,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 67 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 12:34:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-02 12:34:48,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 112. [2024-11-02 12:34:48,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.2935779816513762) internal successors, (141), 109 states have internal predecessors, (141), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:34:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 143 transitions. [2024-11-02 12:34:48,281 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 143 transitions. Word has length 50 [2024-11-02 12:34:48,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:48,282 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 143 transitions. [2024-11-02 12:34:48,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:48,286 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 143 transitions. [2024-11-02 12:34:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-02 12:34:48,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:48,287 INFO L215 NwaCegarLoop]: trace histogram [23, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:48,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-02 12:34:48,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:48,488 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:48,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:48,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1967788957, now seen corresponding path program 6 times [2024-11-02 12:34:48,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:48,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991410481] [2024-11-02 12:34:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:48,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:34:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-02 12:34:49,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:34:49,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991410481] [2024-11-02 12:34:49,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991410481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:34:49,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520924996] [2024-11-02 12:34:49,914 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-02 12:34:49,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:49,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:34:49,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:34:49,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-02 12:34:50,203 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-02 12:34:50,203 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-02 12:34:50,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-02 12:34:50,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:34:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-02 12:34:50,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:34:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-02 12:34:51,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520924996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:34:51,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1419409172] [2024-11-02 12:34:51,590 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-02 12:34:51,590 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:34:51,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:34:51,590 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:34:51,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:34:52,061 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 97 for LOIs [2024-11-02 12:34:52,118 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:34:52,428 WARN L873 $PredicateComparison]: unable to prove that (or (and (<= 2 |c_ULTIMATE.start_main_~#values~0#1.base|) (<= 2 |c_ULTIMATE.start_main_~#set~0#1.base|) (<= 1 |c_#StackHeapBarrier|) (= |c_ULTIMATE.start_main_~v~0#1| 0) (= |c_ULTIMATE.start_main_~#values~0#1.offset| 0) (= |c_ULTIMATE.start_main_~n~0#1| 0) (= |c_ULTIMATE.start_main_~#set~0#1.offset| 0)) (exists ((|v_ULTIMATE.start_main_#t~ret14#1_76| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_69| Int) (|v_ULTIMATE.start_main_#t~mem13#1_79| Int) (|v_ULTIMATE.start_insert_~value#1_70| Int) (|v_ULTIMATE.start_insert_~set#1.offset_70| Int) (|v_ULTIMATE.start_insert_~size#1_70| Int) (|v_ULTIMATE.start_main_~n~0#1_96| Int) (|v_ULTIMATE.start_insert_~set#1.base_70| Int) (|v_ULTIMATE.start_elem_exists_#res#1_95| Int) (|v_ULTIMATE.start_elem_exists_~size#1_112| Int) (|v_ULTIMATE.start_insert_#in~size#1_69| Int) (|v_ULTIMATE.start_insert_#in~value#1_69| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_69| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_119| Int) (|v_ULTIMATE.start_insert_#res#1_69| Int) (|v_#memory_int_197| (Array Int (Array Int Int)))) (let ((.cse0 (= |v_ULTIMATE.start_elem_exists_#res#1_95| 0))) (and (or (and (<= |c_ULTIMATE.start_main_~n~0#1| 2147483647) (= (store |v_#memory_int_197| |c_ULTIMATE.start_main_~#set~0#1.base| (store (select |v_#memory_int_197| |c_ULTIMATE.start_main_~#set~0#1.base|) (+ |c_ULTIMATE.start_main_~#set~0#1.offset| (- 4) (* |c_ULTIMATE.start_main_~n~0#1| 4)) (select (select |v_#memory_int_197| |c_ULTIMATE.start_main_~#values~0#1.base|) (+ (* |c_ULTIMATE.start_main_~v~0#1| 4) (- 4) |c_ULTIMATE.start_main_~#values~0#1.offset|)))) |c_#memory_int|) (= |c_ULTIMATE.start_main_~n~0#1| (+ |v_ULTIMATE.start_main_~n~0#1_96| 1)) (<= 0 (+ |c_ULTIMATE.start_main_~n~0#1| 2147483648)) .cse0) (and (= |c_ULTIMATE.start_insert_#in~value#1| |v_ULTIMATE.start_insert_#in~value#1_69|) (= |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~n~0#1_96|) (= |v_ULTIMATE.start_insert_~size#1_70| |c_ULTIMATE.start_insert_~size#1|) (= |c_#memory_int| |v_#memory_int_197|) (= |c_ULTIMATE.start_insert_#res#1| |v_ULTIMATE.start_insert_#res#1_69|) (= |v_ULTIMATE.start_insert_~set#1.base_70| |c_ULTIMATE.start_insert_~set#1.base|) (= |c_ULTIMATE.start_main_#t~mem13#1| |v_ULTIMATE.start_main_#t~mem13#1_79|) (not .cse0) (= |c_ULTIMATE.start_insert_#in~set#1.offset| |v_ULTIMATE.start_insert_#in~set#1.offset_69|) (= |c_ULTIMATE.start_insert_~set#1.offset| |v_ULTIMATE.start_insert_~set#1.offset_70|) (= |v_ULTIMATE.start_insert_#in~set#1.base_69| |c_ULTIMATE.start_insert_#in~set#1.base|) (= |c_ULTIMATE.start_insert_~value#1| |v_ULTIMATE.start_insert_~value#1_70|) (= |c_ULTIMATE.start_insert_#in~size#1| |v_ULTIMATE.start_insert_#in~size#1_69|) (= |c_ULTIMATE.start_main_#t~ret14#1| |v_ULTIMATE.start_main_#t~ret14#1_76|))) (or (and (= |v_ULTIMATE.start_elem_exists_#res#1_95| 1) (= |v_ULTIMATE.start_elem_exists_~i~0#1_119| 0) (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_112|)) .cse0) (<= |v_ULTIMATE.start_elem_exists_#res#1_95| 2147483647) (<= 0 (+ |v_ULTIMATE.start_elem_exists_#res#1_95| 2147483648)))))) is different from true [2024-11-02 12:34:53,615 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3927#(and (exists ((|v_ULTIMATE.start_main_#t~ret14#1_76| Int) (|v_ULTIMATE.start_insert_~value#1_70| Int) (|v_ULTIMATE.start_main_#t~mem13#1_79| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_elem_exists_~size#1_112| Int) (|v_ULTIMATE.start_insert_#in~value#1_69| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_#t~ret14#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_69| Int) (|v_ULTIMATE.start_elem_exists_~i~0#1_119| Int) (|v_ULTIMATE.start_insert_#in~set#1.offset_69| Int) (|v_ULTIMATE.start_insert_~set#1.offset_70| Int) (|v_ULTIMATE.start_main_~n~0#1_96| Int) (|v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_~size#1_70| Int) (|v_ULTIMATE.start_insert_~set#1.base_70| Int) (|v_ULTIMATE.start_elem_exists_#res#1_95| Int) (|v_ULTIMATE.start_main_~v~0#1_178| Int) (|v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#in~size#1_69| Int) (|v_ULTIMATE.start_main_#t~mem13#1_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_6| Int) (|v_#memory_int_197| (Array Int (Array Int Int))) (|v_ULTIMATE.start_insert_#res#1_69| Int)) (and (<= 2 |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6|) (or (and (= |v_ULTIMATE.start_elem_exists_#res#1_95| 1) (= |v_ULTIMATE.start_elem_exists_~i~0#1_119| 0) (<= 1 |v_ULTIMATE.start_elem_exists_~size#1_112|)) (= |v_ULTIMATE.start_elem_exists_#res#1_95| 0)) (or (and (<= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| 2147483647) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| (+ |v_ULTIMATE.start_main_~n~0#1_96| 1)) (= (store |v_#memory_int_197| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6| (store (select |v_#memory_int_197| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6|) (+ (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| 4) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6| (- 4)) (select (select |v_#memory_int_197| |v_ULTIMATE.start_main_~#values~0#1.base_BEFORE_CALL_6|) (+ (- 4) |v_ULTIMATE.start_main_~#values~0#1.offset_BEFORE_CALL_6| (* |v_ULTIMATE.start_main_~v~0#1_178| 4))))) |#memory_int|) (= |v_ULTIMATE.start_elem_exists_#res#1_95| 0)) (and (= |v_ULTIMATE.start_insert_#in~set#1.offset_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#in~set#1.offset_69|) (= |v_ULTIMATE.start_insert_#in~size#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#in~size#1_69|) (= |v_ULTIMATE.start_insert_#in~value#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#in~value#1_69|) (= |v_ULTIMATE.start_insert_~set#1.offset_BEFORE_CALL_6| |v_ULTIMATE.start_insert_~set#1.offset_70|) (= |#memory_int| |v_#memory_int_197|) (= |v_ULTIMATE.start_insert_#in~set#1.base_69| |v_ULTIMATE.start_insert_#in~set#1.base_BEFORE_CALL_6|) (not (= |v_ULTIMATE.start_elem_exists_#res#1_95| 0)) (= |v_ULTIMATE.start_insert_#res#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_#res#1_69|) (= |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~n~0#1_96|) (= |v_ULTIMATE.start_insert_~value#1_70| |v_ULTIMATE.start_insert_~value#1_BEFORE_CALL_6|) (= |v_ULTIMATE.start_insert_~size#1_BEFORE_CALL_6| |v_ULTIMATE.start_insert_~size#1_70|) (= |v_ULTIMATE.start_insert_~set#1.base_BEFORE_CALL_6| |v_ULTIMATE.start_insert_~set#1.base_70|) (= |v_ULTIMATE.start_main_#t~ret14#1_76| |v_ULTIMATE.start_main_#t~ret14#1_BEFORE_CALL_6|) (= |v_ULTIMATE.start_main_#t~mem13#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_#t~mem13#1_79|))) (<= 100000 |v_ULTIMATE.start_main_~v~0#1_178|) (= (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6|) (select (select |#memory_int| |v_ULTIMATE.start_main_~#set~0#1.base_BEFORE_CALL_6|) (+ |v_ULTIMATE.start_main_~#set~0#1.offset_BEFORE_CALL_6| 4))))) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-02 12:34:53,615 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-02 12:34:53,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:34:53,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2024-11-02 12:34:53,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786583007] [2024-11-02 12:34:53,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:34:53,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-02 12:34:53,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:34:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-02 12:34:53,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1501, Invalid=2403, Unknown=6, NotChecked=122, Total=4032 [2024-11-02 12:34:53,619 INFO L87 Difference]: Start difference. First operand 112 states and 143 transitions. Second operand has 51 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 50 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:34:54,560 INFO L93 Difference]: Finished difference Result 416 states and 598 transitions. [2024-11-02 12:34:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-02 12:34:54,560 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 50 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-02 12:34:54,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:34:54,562 INFO L225 Difference]: With dead ends: 416 [2024-11-02 12:34:54,562 INFO L226 Difference]: Without dead ends: 329 [2024-11-02 12:34:54,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1501, Invalid=2403, Unknown=6, NotChecked=122, Total=4032 [2024-11-02 12:34:54,565 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 445 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:34:54,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 56 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-02 12:34:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-02 12:34:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 137. [2024-11-02 12:34:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 134 states have (on average 1.2388059701492538) internal successors, (166), 134 states have internal predecessors, (166), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:34:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 168 transitions. [2024-11-02 12:34:54,593 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 168 transitions. Word has length 75 [2024-11-02 12:34:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:34:54,594 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 168 transitions. [2024-11-02 12:34:54,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 50 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:34:54,594 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 168 transitions. [2024-11-02 12:34:54,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-02 12:34:54,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:34:54,596 INFO L215 NwaCegarLoop]: trace histogram [48, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:34:54,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-02 12:34:54,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af2fd11a-9f76-4e23-b998-c1a720974f10/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:34:54,796 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:34:54,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:34:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1903898546, now seen corresponding path program 7 times [2024-11-02 12:34:54,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:34:54,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115092995] [2024-11-02 12:34:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:34:54,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:34:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat