./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ --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 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:11:27,667 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:11:27,755 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:11:27,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:11:27,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:11:27,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:11:27,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:11:27,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:11:27,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:11:27,816 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:11:27,817 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:11:27,817 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:11:27,818 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:11:27,818 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:11:27,819 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:11:27,819 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:11:27,820 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:11:27,821 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:11:27,821 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:11:27,822 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:11:27,822 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:11:27,824 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:11:27,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:11:27,826 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:11:27,827 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:11:27,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:11:27,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:11:27,828 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:11:27,828 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:11:27,829 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:11:27,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:11:27,830 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:11:27,831 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:11:27,831 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:11:27,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:11:27,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:11:27,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:11:27,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:11:27,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:11:27,833 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:11:27,833 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:11:27,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:11:27,834 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:11:27,834 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:11:27,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:11:27,835 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_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a [2023-11-19 05:11:28,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:11:28,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:11:28,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:11:28,144 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:11:28,145 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:11:28,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2023-11-19 05:11:31,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:11:31,591 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:11:31,592 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2023-11-19 05:11:31,603 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/data/263a01dec/5649d4268bc44e48b095fe6070a07df6/FLAGf2c90c054 [2023-11-19 05:11:31,620 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/data/263a01dec/5649d4268bc44e48b095fe6070a07df6 [2023-11-19 05:11:31,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:11:31,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:11:31,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:11:31,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:11:31,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:11:31,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12af9aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31, skipping insertion in model container [2023-11-19 05:11:31,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,669 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:11:31,830 WARN L240 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_c60564be-f46a-4f83-ae9f-0c2286a58717/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2023-11-19 05:11:31,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:11:31,865 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:11:31,879 WARN L240 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_c60564be-f46a-4f83-ae9f-0c2286a58717/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2023-11-19 05:11:31,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:11:31,906 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:11:31,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31 WrapperNode [2023-11-19 05:11:31,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:11:31,908 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:11:31,908 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:11:31,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:11:31,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,944 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2023-11-19 05:11:31,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:11:31,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:11:31,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:11:31,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:11:31,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:11:31,985 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:11:31,985 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:11:31,985 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:11:31,986 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31" (1/1) ... [2023-11-19 05:11:31,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:11:32,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:32,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:11:32,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:11:32,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:11:32,046 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:11:32,046 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:11:32,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:11:32,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:11:32,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:11:32,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:11:32,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:11:32,133 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:11:32,135 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:11:32,313 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:11:32,345 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:11:32,345 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:11:32,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:32 BoogieIcfgContainer [2023-11-19 05:11:32,349 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:11:32,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:11:32,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:11:32,356 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:11:32,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:11:31" (1/3) ... [2023-11-19 05:11:32,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796f8d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:11:32, skipping insertion in model container [2023-11-19 05:11:32,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:31" (2/3) ... [2023-11-19 05:11:32,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796f8d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:11:32, skipping insertion in model container [2023-11-19 05:11:32,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:32" (3/3) ... [2023-11-19 05:11:32,360 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2023-11-19 05:11:32,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:11:32,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:11:32,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:11:32,443 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@4016e764, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:11:32,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:11:32,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 16 states have internal predecessors, (20), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 05:11:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 05:11:32,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:32,455 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:32,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:32,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:32,461 INFO L85 PathProgramCache]: Analyzing trace with hash 966807424, now seen corresponding path program 1 times [2023-11-19 05:11:32,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:32,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965909939] [2023-11-19 05:11:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:32,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:32,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:11:32,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664270706] [2023-11-19 05:11:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:32,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:32,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:32,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:32,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:11:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:32,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:11:32,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:32,744 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 05:11:32,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:11:32,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:32,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965909939] [2023-11-19 05:11:32,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:11:32,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664270706] [2023-11-19 05:11:32,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664270706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:32,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:32,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:11:32,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897172164] [2023-11-19 05:11:32,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:32,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:11:32,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:32,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:11:32,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:11:32,803 INFO L87 Difference]: Start difference. First operand has 30 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 16 states have internal predecessors, (20), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 05:11:32,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:32,834 INFO L93 Difference]: Finished difference Result 49 states and 78 transitions. [2023-11-19 05:11:32,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:11:32,837 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2023-11-19 05:11:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:32,844 INFO L225 Difference]: With dead ends: 49 [2023-11-19 05:11:32,844 INFO L226 Difference]: Without dead ends: 28 [2023-11-19 05:11:32,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:11:32,852 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:32,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:11:32,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-19 05:11:32,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-19 05:11:32,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:11:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2023-11-19 05:11:32,891 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 26 [2023-11-19 05:11:32,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:32,892 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2023-11-19 05:11:32,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 05:11:32,893 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2023-11-19 05:11:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:11:32,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:32,895 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:32,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 05:11:33,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 05:11:33,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:33,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:33,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1643993843, now seen corresponding path program 1 times [2023-11-19 05:11:33,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:33,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180388647] [2023-11-19 05:11:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:33,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:33,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:11:33,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430697002] [2023-11-19 05:11:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:33,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:33,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:33,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:33,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:11:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:33,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 05:11:33,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 05:11:33,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:11:33,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:33,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180388647] [2023-11-19 05:11:33,737 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:11:33,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430697002] [2023-11-19 05:11:33,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430697002] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2036677187] [2023-11-19 05:11:33,769 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-11-19 05:11:33,770 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:11:33,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:11:33,779 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:11:33,780 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:11:35,010 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 05:11:35,012 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:11:35,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2036677187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:35,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:11:35,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 17 [2023-11-19 05:11:35,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564386609] [2023-11-19 05:11:35,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:35,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 05:11:35,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:35,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 05:11:35,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-11-19 05:11:35,612 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand has 11 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 05:11:35,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:35,826 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2023-11-19 05:11:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 05:11:35,828 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2023-11-19 05:11:35,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:35,830 INFO L225 Difference]: With dead ends: 38 [2023-11-19 05:11:35,830 INFO L226 Difference]: Without dead ends: 30 [2023-11-19 05:11:35,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-11-19 05:11:35,834 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:35,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 48 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:11:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-19 05:11:35,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-19 05:11:35,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:11:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2023-11-19 05:11:35,864 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 27 [2023-11-19 05:11:35,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:35,869 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2023-11-19 05:11:35,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 05:11:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2023-11-19 05:11:35,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 05:11:35,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:35,874 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:35,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:36,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:36,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:36,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:36,101 INFO L85 PathProgramCache]: Analyzing trace with hash -575116102, now seen corresponding path program 1 times [2023-11-19 05:11:36,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:36,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890843411] [2023-11-19 05:11:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:36,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:36,135 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:11:36,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061860518] [2023-11-19 05:11:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:36,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:36,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:36,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:36,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:11:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:36,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:11:36,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 05:11:36,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:11:36,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:36,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890843411] [2023-11-19 05:11:36,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:11:36,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061860518] [2023-11-19 05:11:36,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061860518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:36,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:36,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:11:36,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79760717] [2023-11-19 05:11:36,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:36,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:11:36,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:36,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:11:36,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:36,242 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 05:11:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:36,316 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2023-11-19 05:11:36,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:11:36,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 28 [2023-11-19 05:11:36,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:36,321 INFO L225 Difference]: With dead ends: 43 [2023-11-19 05:11:36,321 INFO L226 Difference]: Without dead ends: 41 [2023-11-19 05:11:36,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:11:36,330 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:36,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 117 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:11:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-19 05:11:36,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2023-11-19 05:11:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 05:11:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2023-11-19 05:11:36,352 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 28 [2023-11-19 05:11:36,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:36,353 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2023-11-19 05:11:36,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-19 05:11:36,353 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2023-11-19 05:11:36,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 05:11:36,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:36,355 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:36,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:36,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 05:11:36,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:36,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:36,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1810277145, now seen corresponding path program 1 times [2023-11-19 05:11:36,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:36,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288060017] [2023-11-19 05:11:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:36,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:36,592 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:11:36,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531805329] [2023-11-19 05:11:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:36,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:36,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:36,595 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:36,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:11:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:36,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 05:11:36,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:36,726 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 05:11:36,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:11:36,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:36,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288060017] [2023-11-19 05:11:36,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:11:36,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531805329] [2023-11-19 05:11:36,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531805329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:36,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:36,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:11:36,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594880254] [2023-11-19 05:11:36,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:36,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:11:36,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:11:36,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:36,729 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:11:36,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:36,789 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2023-11-19 05:11:36,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:11:36,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 33 [2023-11-19 05:11:36,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:36,792 INFO L225 Difference]: With dead ends: 51 [2023-11-19 05:11:36,792 INFO L226 Difference]: Without dead ends: 49 [2023-11-19 05:11:36,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:11:36,793 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:36,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 126 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:11:36,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-19 05:11:36,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2023-11-19 05:11:36,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 25 states have (on average 1.16) internal successors, (29), 28 states have internal predecessors, (29), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 05:11:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 64 transitions. [2023-11-19 05:11:36,815 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 64 transitions. Word has length 33 [2023-11-19 05:11:36,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:36,815 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 64 transitions. [2023-11-19 05:11:36,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:11:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 64 transitions. [2023-11-19 05:11:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 05:11:36,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:36,817 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:36,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:37,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:37,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:37,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:37,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1313498982, now seen corresponding path program 1 times [2023-11-19 05:11:37,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:37,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659388725] [2023-11-19 05:11:37,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:37,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:37,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:11:37,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275695630] [2023-11-19 05:11:37,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:37,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:37,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:37,059 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:37,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:11:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:37,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 05:11:37,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-19 05:11:37,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:11:37,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659388725] [2023-11-19 05:11:37,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:11:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275695630] [2023-11-19 05:11:37,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275695630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:37,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:37,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:11:37,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952691276] [2023-11-19 05:11:37,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:37,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:11:37,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:37,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:11:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:11:37,219 INFO L87 Difference]: Start difference. First operand 48 states and 64 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 05:11:37,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:37,289 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2023-11-19 05:11:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:11:37,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 38 [2023-11-19 05:11:37,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:37,291 INFO L225 Difference]: With dead ends: 55 [2023-11-19 05:11:37,291 INFO L226 Difference]: Without dead ends: 53 [2023-11-19 05:11:37,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:11:37,293 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:37,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 116 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:11:37,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-19 05:11:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2023-11-19 05:11:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 05:11:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2023-11-19 05:11:37,315 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 38 [2023-11-19 05:11:37,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:37,315 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2023-11-19 05:11:37,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 05:11:37,316 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2023-11-19 05:11:37,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 05:11:37,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:37,317 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:37,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:37,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:37,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:37,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:37,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1793667961, now seen corresponding path program 1 times [2023-11-19 05:11:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:37,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331713897] [2023-11-19 05:11:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:37,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:37,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:11:37,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638298351] [2023-11-19 05:11:37,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:37,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:37,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:37,549 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:37,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:11:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:37,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 05:11:37,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-19 05:11:37,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:11:37,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:37,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331713897] [2023-11-19 05:11:37,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:11:37,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638298351] [2023-11-19 05:11:37,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638298351] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:37,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1200891841] [2023-11-19 05:11:37,869 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2023-11-19 05:11:37,869 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:11:37,870 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:11:37,870 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:11:37,870 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:11:38,765 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 34 for LOIs [2023-11-19 05:11:38,779 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 05:11:38,781 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:11:39,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1200891841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:39,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:11:39,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 20 [2023-11-19 05:11:39,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726114626] [2023-11-19 05:11:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:39,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 05:11:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 05:11:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-11-19 05:11:39,482 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-19 05:11:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:39,768 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2023-11-19 05:11:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:11:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2023-11-19 05:11:39,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:39,771 INFO L225 Difference]: With dead ends: 95 [2023-11-19 05:11:39,771 INFO L226 Difference]: Without dead ends: 72 [2023-11-19 05:11:39,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-11-19 05:11:39,773 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 42 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:39,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 55 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:11:39,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-19 05:11:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-11-19 05:11:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 43 states have internal predecessors, (45), 21 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 05:11:39,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2023-11-19 05:11:39,796 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 43 [2023-11-19 05:11:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:39,796 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2023-11-19 05:11:39,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-19 05:11:39,797 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2023-11-19 05:11:39,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 05:11:39,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:39,798 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:39,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:40,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:40,025 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:40,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:40,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2137702023, now seen corresponding path program 1 times [2023-11-19 05:11:40,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:40,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417497808] [2023-11-19 05:11:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:40,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:40,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:11:40,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851830386] [2023-11-19 05:11:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:40,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:40,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:40,045 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:40,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:11:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:40,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 05:11:40,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-19 05:11:40,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:11:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-19 05:11:40,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:40,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417497808] [2023-11-19 05:11:40,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:11:40,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851830386] [2023-11-19 05:11:40,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851830386] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:40,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:11:40,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2023-11-19 05:11:40,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498277570] [2023-11-19 05:11:40,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:40,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:11:40,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:40,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:11:40,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:11:40,339 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 05:11:40,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:40,403 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2023-11-19 05:11:40,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:11:40,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 50 [2023-11-19 05:11:40,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:40,405 INFO L225 Difference]: With dead ends: 78 [2023-11-19 05:11:40,405 INFO L226 Difference]: Without dead ends: 76 [2023-11-19 05:11:40,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:11:40,406 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:40,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 111 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:11:40,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-19 05:11:40,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-19 05:11:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 46 states have internal predecessors, (48), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 05:11:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2023-11-19 05:11:40,434 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 50 [2023-11-19 05:11:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:40,434 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2023-11-19 05:11:40,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-19 05:11:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2023-11-19 05:11:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 05:11:40,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:40,436 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:40,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:40,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 05:11:40,661 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:40,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:40,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1984692712, now seen corresponding path program 2 times [2023-11-19 05:11:40,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:40,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293896908] [2023-11-19 05:11:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:40,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:40,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:11:40,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823015165] [2023-11-19 05:11:40,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:11:40,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:40,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:40,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:40,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:11:40,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 05:11:40,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:11:40,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 05:11:40,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-19 05:11:40,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:11:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-19 05:11:40,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:40,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293896908] [2023-11-19 05:11:40,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:11:40,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823015165] [2023-11-19 05:11:40,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823015165] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:11:40,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1496855270] [2023-11-19 05:11:40,991 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2023-11-19 05:11:40,991 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:11:40,992 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:11:40,992 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:11:40,992 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:11:43,129 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 52 for LOIs [2023-11-19 05:11:43,230 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 05:11:43,231 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:11:45,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1496855270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:45,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:11:45,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7, 6] total 21 [2023-11-19 05:11:45,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314241251] [2023-11-19 05:11:45,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:45,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 05:11:45,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:45,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 05:11:45,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-19 05:11:45,201 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-19 05:11:45,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:45,440 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2023-11-19 05:11:45,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:11:45,441 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 65 [2023-11-19 05:11:45,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:45,443 INFO L225 Difference]: With dead ends: 87 [2023-11-19 05:11:45,443 INFO L226 Difference]: Without dead ends: 85 [2023-11-19 05:11:45,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 151 SyntacticMatches, 23 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-19 05:11:45,444 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:45,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 44 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:11:45,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-19 05:11:45,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2023-11-19 05:11:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 46 states have (on average 1.0869565217391304) internal successors, (50), 47 states have internal predecessors, (50), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:11:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2023-11-19 05:11:45,474 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 65 [2023-11-19 05:11:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:45,474 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2023-11-19 05:11:45,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 7 states have internal predecessors, (13), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-19 05:11:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2023-11-19 05:11:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 05:11:45,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:45,476 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:45,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:45,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 05:11:45,689 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:45,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:45,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2003369438, now seen corresponding path program 1 times [2023-11-19 05:11:45,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:45,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21061523] [2023-11-19 05:11:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:45,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:45,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 05:11:45,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099998458] [2023-11-19 05:11:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:45,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:45,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:45,704 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:45,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:11:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:45,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-19 05:11:45,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-19 05:11:46,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:11:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-11-19 05:11:47,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:47,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21061523] [2023-11-19 05:11:47,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 05:11:47,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099998458] [2023-11-19 05:11:47,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099998458] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:11:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [574595126] [2023-11-19 05:11:47,188 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-11-19 05:11:47,188 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:11:47,189 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:11:47,189 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:11:47,189 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:11:49,448 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 52 for LOIs [2023-11-19 05:11:49,565 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2023-11-19 05:11:49,567 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:11:53,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [574595126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:53,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:11:53,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [13, 13] total 38 [2023-11-19 05:11:53,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348210046] [2023-11-19 05:11:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:53,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 05:11:53,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:53,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 05:11:53,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1155, Unknown=0, NotChecked=0, Total=1406 [2023-11-19 05:11:53,061 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 17 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 7 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-19 05:11:53,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:53,372 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2023-11-19 05:11:53,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 05:11:53,372 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 7 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) Word has length 74 [2023-11-19 05:11:53,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:53,373 INFO L225 Difference]: With dead ends: 109 [2023-11-19 05:11:53,373 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:11:53,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 158 SyntacticMatches, 26 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=251, Invalid=1155, Unknown=0, NotChecked=0, Total=1406 [2023-11-19 05:11:53,375 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:53,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 46 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:11:53,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:11:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:11:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:11:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:11:53,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2023-11-19 05:11:53,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:53,377 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:11:53,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 7 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-19 05:11:53,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:11:53,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:11:53,380 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:11:53,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:53,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:53,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:11:54,816 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse20 (select |#memory_int| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~b~0#1| 1)) (.cse1 (= (select |#length| 3) 12)) (.cse2 (<= 1 |#StackHeapBarrier|)) (.cse3 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= |ULTIMATE.start_main_~xy~0#1| 1)) (.cse7 (= (select |#valid| 3) 1)) (.cse8 (= |ULTIMATE.start_main_~yy~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| 1)) (.cse10 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~y~0#1| 1)) (.cse14 (= (select |#valid| 1) 1)) (.cse15 (= (select |#valid| 0) 0)) (.cse16 (= (select |#valid| 2) 1)) (.cse17 (= (select .cse20 0) 48)) (.cse18 (= (select .cse20 1) 0)) (.cse19 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~c~0#1| 1) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (= |ULTIMATE.start_main_~k~0#1| 0) .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19)))) [2023-11-19 05:11:54,816 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse20 (select |#memory_int| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~b~0#1| 1)) (.cse1 (= (select |#length| 3) 12)) (.cse2 (<= 1 |#StackHeapBarrier|)) (.cse3 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= |ULTIMATE.start_main_~xy~0#1| 1)) (.cse7 (= (select |#valid| 3) 1)) (.cse8 (= |ULTIMATE.start_main_~yy~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| 1)) (.cse10 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~y~0#1| 1)) (.cse14 (= (select |#valid| 1) 1)) (.cse15 (= (select |#valid| 0) 0)) (.cse16 (= (select |#valid| 2) 1)) (.cse17 (= (select .cse20 0) 48)) (.cse18 (= (select .cse20 1) 0)) (.cse19 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~c~0#1| 1) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (= |ULTIMATE.start_main_~k~0#1| 0) .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19)))) [2023-11-19 05:11:54,816 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_main_~x~0#1| 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (select .cse0 1) 0))) [2023-11-19 05:11:54,817 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |ULTIMATE.start_main_~x~0#1| 1) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (select .cse0 1) 0))) [2023-11-19 05:11:54,817 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse20 (select |#memory_int| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~b~0#1| 1)) (.cse1 (= (select |#length| 3) 12)) (.cse2 (<= 1 |#StackHeapBarrier|)) (.cse3 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= |ULTIMATE.start_main_~xy~0#1| 1)) (.cse7 (= (select |#valid| 3) 1)) (.cse8 (= |ULTIMATE.start_main_~yy~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| 1)) (.cse10 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~y~0#1| 1)) (.cse14 (= (select |#valid| 1) 1)) (.cse15 (= (select |#valid| 0) 0)) (.cse16 (= (select |#valid| 2) 1)) (.cse17 (= (select .cse20 0) 48)) (.cse18 (= (select .cse20 1) 0)) (.cse19 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~c~0#1| 1) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (= |ULTIMATE.start_main_~k~0#1| 0) .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19)))) [2023-11-19 05:11:54,817 INFO L895 garLoopResultBuilder]: At program point L41-1(lines 41 68) the Hoare annotation is: (let ((.cse16 (select |#memory_int| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~c~0#1| 0)) (.cse1 (= (select |#length| 3) 12)) (.cse2 (<= 1 |#StackHeapBarrier|)) (.cse3 (= 11 (select |#length| 2))) (.cse4 (= 2 (select |#length| 1))) (.cse5 (= |ULTIMATE.start_main_~xy~0#1| 1)) (.cse6 (= (select |#valid| 3) 1)) (.cse7 (= |ULTIMATE.start_main_~yy~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~a~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse10 (= |ULTIMATE.start_main_~y~0#1| 1)) (.cse11 (= (select |#valid| 1) 1)) (.cse12 (= (select |#valid| 0) 0)) (.cse13 (= (select |#valid| 2) 1)) (.cse14 (= (select .cse16 0) 48)) (.cse15 (= (select .cse16 1) 0))) (or (and .cse0 (= |ULTIMATE.start_main_~k~0#1| 1) .cse1 .cse2 (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~b~0#1| 0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= |ULTIMATE.start_main_~q~0#1| 1) .cse10 .cse11 (= |ULTIMATE.start_main_~r~0#1| 1) .cse12 .cse13 .cse14 .cse15 (= (+ |ULTIMATE.start_main_~s~0#1| 1) 0)) (and .cse0 (= |ULTIMATE.start_main_~b~0#1| 1) .cse1 .cse2 (= |ULTIMATE.start_main_~p~0#1| 1) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse10 (= |ULTIMATE.start_main_~k~0#1| 0) .cse11 .cse12 .cse13 .cse14 .cse15 (= |ULTIMATE.start_main_~s~0#1| 1))))) [2023-11-19 05:11:54,817 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 1) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~b~0#1| 0) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= |ULTIMATE.start_main_~xy~0#1| 1) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~yy~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~r~0#1| 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (= (+ |ULTIMATE.start_main_~s~0#1| 1) 0))) [2023-11-19 05:11:54,817 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:11:54,818 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~x~0#1| 1) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~y~0#1| 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (select .cse0 1) 0))) [2023-11-19 05:11:54,818 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse20 (select |#memory_int| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~b~0#1| 1)) (.cse1 (= (select |#length| 3) 12)) (.cse2 (<= 1 |#StackHeapBarrier|)) (.cse3 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= |ULTIMATE.start_main_~xy~0#1| 1)) (.cse7 (= (select |#valid| 3) 1)) (.cse8 (= |ULTIMATE.start_main_~yy~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| 1)) (.cse10 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~y~0#1| 1)) (.cse14 (= (select |#valid| 1) 1)) (.cse15 (= (select |#valid| 0) 0)) (.cse16 (= (select |#valid| 2) 1)) (.cse17 (= (select .cse20 0) 48)) (.cse18 (= (select .cse20 1) 0)) (.cse19 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~c~0#1| 1) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (= |ULTIMATE.start_main_~k~0#1| 0) .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19)))) [2023-11-19 05:11:54,818 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2023-11-19 05:11:54,818 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:11:54,818 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 1) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~b~0#1| 0) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= |ULTIMATE.start_main_~xy~0#1| 1) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~yy~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (= (select |#valid| 1) 1) (= |ULTIMATE.start_main_~r~0#1| 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (= (+ |ULTIMATE.start_main_~s~0#1| 1) 0))) [2023-11-19 05:11:54,818 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~b~0#1| 1) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~p~0#1| 1) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= |ULTIMATE.start_main_~xy~0#1| 1) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~yy~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~k~0#1| 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (= |ULTIMATE.start_main_~s~0#1| 1))) [2023-11-19 05:11:54,819 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~b~0#1| 1) (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~p~0#1| 1) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= |ULTIMATE.start_main_~xy~0#1| 1) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~yy~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~k~0#1| 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (= |ULTIMATE.start_main_~s~0#1| 1))) [2023-11-19 05:11:54,819 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-11-19 05:11:54,819 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (= (select .cse0 1) 0))) [2023-11-19 05:11:54,819 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-11-19 05:11:54,819 INFO L899 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2023-11-19 05:11:54,819 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse20 (select |#memory_int| 1))) (let ((.cse0 (= |ULTIMATE.start_main_~b~0#1| 1)) (.cse1 (= (select |#length| 3) 12)) (.cse2 (<= 1 |#StackHeapBarrier|)) (.cse3 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= |ULTIMATE.start_main_~xy~0#1| 1)) (.cse7 (= (select |#valid| 3) 1)) (.cse8 (= |ULTIMATE.start_main_~yy~0#1| 1)) (.cse9 (= |ULTIMATE.start_main_~a~0#1| 1)) (.cse10 (= |ULTIMATE.start_main_~x~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse13 (= |ULTIMATE.start_main_~y~0#1| 1)) (.cse14 (= (select |#valid| 1) 1)) (.cse15 (= (select |#valid| 0) 0)) (.cse16 (= (select |#valid| 2) 1)) (.cse17 (= (select .cse20 0) 48)) (.cse18 (= (select .cse20 1) 0)) (.cse19 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~c~0#1| 1) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (= |ULTIMATE.start_main_~k~0#1| 0) .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19)))) [2023-11-19 05:11:54,819 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2023-11-19 05:11:54,820 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-19 05:11:54,820 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-11-19 05:11:54,820 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-11-19 05:11:54,820 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-11-19 05:11:54,820 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-11-19 05:11:54,820 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-11-19 05:11:54,820 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-11-19 05:11:54,820 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-11-19 05:11:54,820 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-11-19 05:11:54,824 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:54,826 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:11:54,841 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-19 05:11:54,843 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-19 05:11:54,843 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-19 05:11:54,843 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-19 05:11:54,844 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-19 05:11:54,844 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-19 05:11:54,844 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-19 05:11:54,844 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-19 05:11:54,844 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-19 05:11:54,845 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-19 05:11:54,845 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-19 05:11:54,845 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-19 05:11:54,846 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-19 05:11:54,846 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-19 05:11:54,846 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-19 05:11:54,847 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-19 05:11:54,847 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-19 05:11:54,847 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-19 05:11:54,849 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-19 05:11:54,849 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-19 05:11:54,849 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-19 05:11:54,850 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-19 05:11:54,850 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-19 05:11:54,850 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-19 05:11:54,851 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-19 05:11:54,851 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-19 05:11:54,851 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-19 05:11:54,851 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-11-19 05:11:54,852 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-11-19 05:11:54,852 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-11-19 05:11:54,852 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-11-19 05:11:54,853 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-11-19 05:11:54,853 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-11-19 05:11:54,853 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-11-19 05:11:54,853 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-11-19 05:11:54,854 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-11-19 05:11:54,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:11:54 BoogieIcfgContainer [2023-11-19 05:11:54,854 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:11:54,855 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:11:54,855 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:11:54,855 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:11:54,856 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:32" (3/4) ... [2023-11-19 05:11:54,858 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:11:54,862 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 05:11:54,862 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-19 05:11:54,867 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-11-19 05:11:54,868 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-19 05:11:54,868 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:11:54,868 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:11:54,972 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:11:54,972 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:11:54,973 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:11:54,973 INFO L158 Benchmark]: Toolchain (without parser) took 23343.80ms. Allocated memory was 197.1MB in the beginning and 413.1MB in the end (delta: 216.0MB). Free memory was 156.5MB in the beginning and 175.0MB in the end (delta: -18.6MB). Peak memory consumption was 200.0MB. Max. memory is 16.1GB. [2023-11-19 05:11:54,974 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 151.0MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:11:54,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.75ms. Allocated memory is still 197.1MB. Free memory was 156.5MB in the beginning and 145.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:11:54,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.00ms. Allocated memory is still 197.1MB. Free memory was 145.4MB in the beginning and 143.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:11:54,975 INFO L158 Benchmark]: Boogie Preprocessor took 24.83ms. Allocated memory is still 197.1MB. Free memory was 143.3MB in the beginning and 142.6MB in the end (delta: 735.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:11:54,976 INFO L158 Benchmark]: RCFGBuilder took 364.33ms. Allocated memory is still 197.1MB. Free memory was 142.6MB in the beginning and 129.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:11:54,976 INFO L158 Benchmark]: TraceAbstraction took 22501.90ms. Allocated memory was 197.1MB in the beginning and 413.1MB in the end (delta: 216.0MB). Free memory was 128.6MB in the beginning and 179.2MB in the end (delta: -50.6MB). Peak memory consumption was 168.5MB. Max. memory is 16.1GB. [2023-11-19 05:11:54,977 INFO L158 Benchmark]: Witness Printer took 117.63ms. Allocated memory is still 413.1MB. Free memory was 179.2MB in the beginning and 175.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:11:54,979 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 151.0MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.75ms. Allocated memory is still 197.1MB. Free memory was 156.5MB in the beginning and 145.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.00ms. Allocated memory is still 197.1MB. Free memory was 145.4MB in the beginning and 143.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.83ms. Allocated memory is still 197.1MB. Free memory was 143.3MB in the beginning and 142.6MB in the end (delta: 735.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 364.33ms. Allocated memory is still 197.1MB. Free memory was 142.6MB in the beginning and 129.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 22501.90ms. Allocated memory was 197.1MB in the beginning and 413.1MB in the end (delta: 216.0MB). Free memory was 128.6MB in the beginning and 179.2MB in the end (delta: -50.6MB). Peak memory consumption was 168.5MB. Max. memory is 16.1GB. * Witness Printer took 117.63ms. Allocated memory is still 413.1MB. Free memory was 179.2MB in the beginning and 175.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.4s, OverallIterations: 9, TraceHistogramMax: 9, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117 mSDsluCounter, 701 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 447 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 759 IncrementalHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 254 mSDtfsCounter, 759 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 786 GetRequests, 618 SyntacticMatches, 53 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1666 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=8, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 14 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 55 PreInvPairs, 69 NumberOfFragments, 1693 HoareAnnotationTreeSize, 55 FomulaSimplifications, 1732 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 16 FomulaSimplificationsInter, 286 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 384 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 561 ConstructedInterpolants, 0 QuantifiedInterpolants, 2517 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1177 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 872/934 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 6.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 11, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 149, DAG_INTERPRETER_EARLY_EXITS: 4, TOOLS_POST_APPLICATIONS: 75, TOOLS_POST_TIME: 0.6s, TOOLS_POST_CALL_APPLICATIONS: 139, TOOLS_POST_CALL_TIME: 2.2s, TOOLS_POST_RETURN_APPLICATIONS: 102, TOOLS_POST_RETURN_TIME: 1.7s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 313, TOOLS_QUANTIFIERELIM_TIME: 4.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 336, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 179, DOMAIN_JOIN_TIME: 1.9s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 149, DOMAIN_ISBOTTOM_TIME: 0.2s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 1.7s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.7s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 102, CALL_SUMMARIZER_CACHE_MISSES: 7, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.1s, DAG_COMPRESSION_PROCESSED_NODES: 2029, DAG_COMPRESSION_RETAINED_NODES: 322, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((((((((b == 1) && (p == 1)) && (c == 1)) && (xy == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (s == 1)) || ((((((((((((c == 0) && (k == 1)) && (b == 1)) && (p == 1)) && (xy == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((((c == 0) && (k == 1)) && (p == 0)) && (b == 0)) && (xy == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (q == 1)) && (y == 1)) && (r == 1)) && ((s + 1) == 0)) || ((((((((((((c == 0) && (b == 1)) && (p == 1)) && (xy == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (s == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-19 05:11:55,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c60564be-f46a-4f83-ae9f-0c2286a58717/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE