./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb7e704db84b45f8c7f1cb386fc610e1107f57c6e67c0a3b2af510d7426cfd4f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:55:23,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:55:23,863 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:55:23,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:55:23,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:55:23,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:55:23,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:55:23,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:55:23,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:55:23,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:55:23,924 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:55:23,924 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:55:23,925 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:55:23,927 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:55:23,928 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:55:23,928 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:55:23,930 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:55:23,930 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:55:23,931 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:55:23,931 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:55:23,932 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:55:23,933 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:55:23,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:55:23,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:55:23,934 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:55:23,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:55:23,935 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:55:23,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:55:23,936 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:55:23,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:55:23,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:55:23,937 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:55:23,937 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:55:23,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:55:23,938 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:55:23,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:55:23,939 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:55:23,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:55:23,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:55:23,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:55:23,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:55:23,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:55:23,941 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:55:23,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:55:23,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:55:23,942 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:55:23,943 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:55:23,943 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_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb7e704db84b45f8c7f1cb386fc610e1107f57c6e67c0a3b2af510d7426cfd4f [2024-11-09 05:55:24,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:55:24,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:55:24,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:55:24,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:55:24,304 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:55:24,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c Unable to find full path for "g++" [2024-11-09 05:55:26,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:55:26,615 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:55:26,616 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c [2024-11-09 05:55:26,624 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/data/e0799b3e4/4b349ba7140348dba55df6082ddbd762/FLAG48613877d [2024-11-09 05:55:26,639 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/data/e0799b3e4/4b349ba7140348dba55df6082ddbd762 [2024-11-09 05:55:26,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:55:26,643 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:55:26,644 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:55:26,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:55:26,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:55:26,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:26,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac83a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26, skipping insertion in model container [2024-11-09 05:55:26,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:26,674 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:55:26,861 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c[525,538] [2024-11-09 05:55:26,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:55:26,906 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:55:26,918 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c[525,538] [2024-11-09 05:55:26,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:55:26,958 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:55:26,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26 WrapperNode [2024-11-09 05:55:26,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:55:26,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:55:26,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:55:26,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:55:26,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:26,979 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:27,004 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-11-09 05:55:27,010 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:55:27,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:55:27,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:55:27,012 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:55:27,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:27,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:27,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:27,025 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:27,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:27,032 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:27,034 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:27,035 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:27,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:55:27,038 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:55:27,038 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:55:27,038 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:55:27,039 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26" (1/1) ... [2024-11-09 05:55:27,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:55:27,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:55:27,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:55:27,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:55:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:55:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:55:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:55:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:55:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 05:55:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 05:55:27,189 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:55:27,193 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:55:27,510 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-09 05:55:27,510 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:55:27,572 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:55:27,572 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:55:27,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:55:27 BoogieIcfgContainer [2024-11-09 05:55:27,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:55:27,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:55:27,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:55:27,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:55:27,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:55:26" (1/3) ... [2024-11-09 05:55:27,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9838e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:55:27, skipping insertion in model container [2024-11-09 05:55:27,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:55:26" (2/3) ... [2024-11-09 05:55:27,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9838e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:55:27, skipping insertion in model container [2024-11-09 05:55:27,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:55:27" (3/3) ... [2024-11-09 05:55:27,587 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound5.c [2024-11-09 05:55:27,612 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:55:27,612 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:55:27,715 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:55:27,725 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5355d43d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:55:27,727 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:55:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 05:55:27,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 05:55:27,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:27,743 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:55:27,744 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:27,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:27,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1811087078, now seen corresponding path program 1 times [2024-11-09 05:55:27,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:27,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417633311] [2024-11-09 05:55:27,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:27,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:27,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:27,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:27,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417633311] [2024-11-09 05:55:27,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417633311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:55:27,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:55:27,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 05:55:27,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10237869] [2024-11-09 05:55:27,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:55:28,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 05:55:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:28,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 05:55:28,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:55:28,031 INFO L87 Difference]: Start difference. First operand has 24 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:28,087 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2024-11-09 05:55:28,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 05:55:28,089 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 05:55:28,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:28,097 INFO L225 Difference]: With dead ends: 44 [2024-11-09 05:55:28,097 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 05:55:28,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 05:55:28,115 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:28,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:55:28,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 05:55:28,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 05:55:28,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 05:55:28,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2024-11-09 05:55:28,175 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 7 [2024-11-09 05:55:28,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:28,175 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2024-11-09 05:55:28,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:28,177 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2024-11-09 05:55:28,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 05:55:28,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:28,179 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:55:28,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:55:28,180 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:28,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:28,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1445796720, now seen corresponding path program 1 times [2024-11-09 05:55:28,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:28,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563295354] [2024-11-09 05:55:28,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:28,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:28,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:28,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563295354] [2024-11-09 05:55:28,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563295354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:55:28,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:55:28,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:55:28,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822875452] [2024-11-09 05:55:28,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:55:28,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:55:28,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:28,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:55:28,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:55:28,388 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:28,440 INFO L93 Difference]: Finished difference Result 42 states and 63 transitions. [2024-11-09 05:55:28,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:55:28,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 05:55:28,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:28,442 INFO L225 Difference]: With dead ends: 42 [2024-11-09 05:55:28,442 INFO L226 Difference]: Without dead ends: 24 [2024-11-09 05:55:28,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:55:28,445 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:28,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:55:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-09 05:55:28,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-09 05:55:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 05:55:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2024-11-09 05:55:28,455 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 9 [2024-11-09 05:55:28,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:28,456 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2024-11-09 05:55:28,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2024-11-09 05:55:28,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 05:55:28,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:28,457 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:55:28,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:55:28,458 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:28,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:28,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1878535169, now seen corresponding path program 1 times [2024-11-09 05:55:28,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:28,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299479471] [2024-11-09 05:55:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:28,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:28,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:28,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299479471] [2024-11-09 05:55:28,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299479471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:55:28,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:55:28,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:55:28,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887281298] [2024-11-09 05:55:28,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:55:28,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:55:28,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:28,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:55:28,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:55:28,713 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:28,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:28,772 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2024-11-09 05:55:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:55:28,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-09 05:55:28,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:28,774 INFO L225 Difference]: With dead ends: 37 [2024-11-09 05:55:28,775 INFO L226 Difference]: Without dead ends: 28 [2024-11-09 05:55:28,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:55:28,780 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:28,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 134 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:55:28,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-09 05:55:28,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-09 05:55:28,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 05:55:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2024-11-09 05:55:28,790 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 10 [2024-11-09 05:55:28,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:28,791 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2024-11-09 05:55:28,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:28,791 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2024-11-09 05:55:28,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 05:55:28,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:28,792 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:55:28,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:55:28,793 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:28,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:28,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1877045619, now seen corresponding path program 1 times [2024-11-09 05:55:28,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:28,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691752930] [2024-11-09 05:55:28,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:28,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:29,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691752930] [2024-11-09 05:55:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691752930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:55:29,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:55:29,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:55:29,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481521073] [2024-11-09 05:55:29,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:55:29,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:55:29,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:29,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:55:29,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:55:29,426 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:29,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:29,745 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2024-11-09 05:55:29,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:55:29,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-09 05:55:29,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:29,747 INFO L225 Difference]: With dead ends: 40 [2024-11-09 05:55:29,748 INFO L226 Difference]: Without dead ends: 38 [2024-11-09 05:55:29,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:55:29,753 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:29,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:55:29,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-09 05:55:29,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2024-11-09 05:55:29,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 05:55:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2024-11-09 05:55:29,771 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 10 [2024-11-09 05:55:29,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:29,771 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2024-11-09 05:55:29,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:29,772 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2024-11-09 05:55:29,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:55:29,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:29,773 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:55:29,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:55:29,773 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:29,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1471671004, now seen corresponding path program 1 times [2024-11-09 05:55:29,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:29,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145689451] [2024-11-09 05:55:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:29,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:29,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:29,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145689451] [2024-11-09 05:55:29,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145689451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:55:29,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985681223] [2024-11-09 05:55:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:29,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:55:29,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:55:29,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:55:29,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:55:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:29,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:55:29,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:55:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:30,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:55:30,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:30,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985681223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:55:30,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [535910014] [2024-11-09 05:55:30,128 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:55:30,128 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:55:30,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:55:30,138 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:55:30,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:55:30,556 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2024-11-09 05:55:30,563 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:55:30,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [535910014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:55:30,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:55:30,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 4, 4] total 17 [2024-11-09 05:55:30,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336733100] [2024-11-09 05:55:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:55:30,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:55:30,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:55:30,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:55:30,759 INFO L87 Difference]: Start difference. First operand 32 states and 44 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:31,188 INFO L93 Difference]: Finished difference Result 71 states and 105 transitions. [2024-11-09 05:55:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:55:31,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 05:55:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:31,194 INFO L225 Difference]: With dead ends: 71 [2024-11-09 05:55:31,195 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 05:55:31,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:55:31,198 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:31,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 81 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:55:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 05:55:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2024-11-09 05:55:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.25) internal successors, (30), 27 states have internal predecessors, (30), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 05:55:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2024-11-09 05:55:31,222 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 12 [2024-11-09 05:55:31,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:31,224 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2024-11-09 05:55:31,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:31,224 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2024-11-09 05:55:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:55:31,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:31,226 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:55:31,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:55:31,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:55:31,434 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:31,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:31,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2125721397, now seen corresponding path program 1 times [2024-11-09 05:55:31,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:31,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244703964] [2024-11-09 05:55:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:31,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:31,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:31,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244703964] [2024-11-09 05:55:31,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244703964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:55:31,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035049172] [2024-11-09 05:55:31,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:31,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:55:31,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:55:31,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:55:31,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:55:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:31,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:55:31,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:55:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:31,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:55:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:31,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035049172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:55:31,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [970005552] [2024-11-09 05:55:31,748 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 05:55:31,748 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:55:31,749 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:55:31,749 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:55:31,750 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:55:32,017 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 17 for LOIs [2024-11-09 05:55:32,030 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:55:32,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [970005552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:55:32,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:55:32,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 5, 5] total 18 [2024-11-09 05:55:32,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014529075] [2024-11-09 05:55:32,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:55:32,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:55:32,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:55:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:55:32,326 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:33,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:33,049 INFO L93 Difference]: Finished difference Result 61 states and 84 transitions. [2024-11-09 05:55:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:55:33,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 05:55:33,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:33,052 INFO L225 Difference]: With dead ends: 61 [2024-11-09 05:55:33,052 INFO L226 Difference]: Without dead ends: 58 [2024-11-09 05:55:33,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:55:33,053 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:33,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 90 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:55:33,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-09 05:55:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 42. [2024-11-09 05:55:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 29 states have internal predecessors, (33), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 05:55:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2024-11-09 05:55:33,066 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 13 [2024-11-09 05:55:33,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:33,066 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2024-11-09 05:55:33,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:33,067 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2024-11-09 05:55:33,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:55:33,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:33,067 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:55:33,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:55:33,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:55:33,272 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:33,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:33,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2124231847, now seen corresponding path program 1 times [2024-11-09 05:55:33,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:33,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158029918] [2024-11-09 05:55:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:33,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 05:55:33,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:33,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158029918] [2024-11-09 05:55:33,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158029918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:55:33,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:55:33,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:55:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572083979] [2024-11-09 05:55:33,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:55:33,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:55:33,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:33,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:55:33,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:55:33,499 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:35,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:55:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:36,090 INFO L93 Difference]: Finished difference Result 60 states and 82 transitions. [2024-11-09 05:55:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:55:36,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 05:55:36,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:36,092 INFO L225 Difference]: With dead ends: 60 [2024-11-09 05:55:36,092 INFO L226 Difference]: Without dead ends: 58 [2024-11-09 05:55:36,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:55:36,093 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:36,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 128 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 05:55:36,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-09 05:55:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 42. [2024-11-09 05:55:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 29 states have internal predecessors, (33), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 05:55:36,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2024-11-09 05:55:36,110 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 13 [2024-11-09 05:55:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:36,110 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2024-11-09 05:55:36,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2024-11-09 05:55:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 05:55:36,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:36,112 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:55:36,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:55:36,112 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:36,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash 681752818, now seen corresponding path program 1 times [2024-11-09 05:55:36,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:36,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547222034] [2024-11-09 05:55:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:36,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:55:36,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056797519] [2024-11-09 05:55:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:36,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:55:36,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:55:36,133 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:55:36,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:55:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:36,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 05:55:36,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:55:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:36,330 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:55:36,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:36,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547222034] [2024-11-09 05:55:36,331 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:55:36,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056797519] [2024-11-09 05:55:36,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056797519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:55:36,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:55:36,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 05:55:36,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197158195] [2024-11-09 05:55:36,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:55:36,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:55:36,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:55:36,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:55:36,338 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:55:36,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:36,792 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2024-11-09 05:55:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:55:36,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-09 05:55:36,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:36,795 INFO L225 Difference]: With dead ends: 75 [2024-11-09 05:55:36,795 INFO L226 Difference]: Without dead ends: 57 [2024-11-09 05:55:36,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:55:36,796 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:36,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 106 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:55:36,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-09 05:55:36,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-09 05:55:36,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 36 states have internal predecessors, (40), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-09 05:55:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2024-11-09 05:55:36,823 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 15 [2024-11-09 05:55:36,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:36,826 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2024-11-09 05:55:36,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 05:55:36,827 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2024-11-09 05:55:36,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 05:55:36,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:36,828 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:55:36,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 05:55:37,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:55:37,029 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:37,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1842825019, now seen corresponding path program 1 times [2024-11-09 05:55:37,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:37,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986301287] [2024-11-09 05:55:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:37,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:37,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:37,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986301287] [2024-11-09 05:55:37,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986301287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:55:37,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764508940] [2024-11-09 05:55:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:37,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:55:37,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:55:37,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:55:37,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:55:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:37,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:55:37,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:55:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:55:37,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:55:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:37,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764508940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:55:37,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [638417598] [2024-11-09 05:55:37,263 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 05:55:37,263 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:55:37,263 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:55:37,263 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:55:37,264 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:55:37,527 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2024-11-09 05:55:37,536 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:55:37,782 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1535#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (<= 7 ~counter~0))' at error location [2024-11-09 05:55:37,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:55:37,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:55:37,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 10 [2024-11-09 05:55:37,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351585535] [2024-11-09 05:55:37,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:55:37,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:55:37,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:37,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:55:37,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2024-11-09 05:55:37,785 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:55:38,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:38,616 INFO L93 Difference]: Finished difference Result 118 states and 148 transitions. [2024-11-09 05:55:38,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:55:38,617 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2024-11-09 05:55:38,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:38,618 INFO L225 Difference]: With dead ends: 118 [2024-11-09 05:55:38,619 INFO L226 Difference]: Without dead ends: 104 [2024-11-09 05:55:38,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-11-09 05:55:38,620 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 56 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:38,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 149 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 05:55:38,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-09 05:55:38,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2024-11-09 05:55:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 62 states have internal predecessors, (69), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-09 05:55:38,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2024-11-09 05:55:38,661 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 17 [2024-11-09 05:55:38,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:38,662 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2024-11-09 05:55:38,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:55:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2024-11-09 05:55:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 05:55:38,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:38,663 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:55:38,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:55:38,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 05:55:38,864 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:38,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:38,864 INFO L85 PathProgramCache]: Analyzing trace with hash 739343348, now seen corresponding path program 1 times [2024-11-09 05:55:38,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:38,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979474332] [2024-11-09 05:55:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:38,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:38,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:38,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979474332] [2024-11-09 05:55:38,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979474332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:55:38,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926324349] [2024-11-09 05:55:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:38,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:55:38,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:55:38,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:55:38,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:55:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:39,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:55:39,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:55:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:55:39,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:55:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:39,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926324349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:55:39,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [678295455] [2024-11-09 05:55:39,142 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 05:55:39,142 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:55:39,142 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:55:39,142 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:55:39,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:55:39,374 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 43 for LOIs [2024-11-09 05:55:39,426 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:55:40,192 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2007#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_11| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| Int) (|v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_6| Int)) (and (not (= (mod (+ (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| 4294967295) |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_11|) 4294967296) 0)) (<= (+ (mod |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_11| 4294967296) 1) (mod |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_6| 4294967296)))) (= ~counter~0 6))' at error location [2024-11-09 05:55:40,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:55:40,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:55:40,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 11 [2024-11-09 05:55:40,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9003718] [2024-11-09 05:55:40,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:55:40,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 05:55:40,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:40,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 05:55:40,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-11-09 05:55:40,195 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:55:42,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 05:55:44,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:55:46,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:55:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:46,733 INFO L93 Difference]: Finished difference Result 152 states and 194 transitions. [2024-11-09 05:55:46,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:55:46,740 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-11-09 05:55:46,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:46,741 INFO L225 Difference]: With dead ends: 152 [2024-11-09 05:55:46,741 INFO L226 Difference]: Without dead ends: 127 [2024-11-09 05:55:46,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2024-11-09 05:55:46,743 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 83 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:46,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 180 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 108 Invalid, 3 Unknown, 0 Unchecked, 6.5s Time] [2024-11-09 05:55:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-09 05:55:46,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120. [2024-11-09 05:55:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 76 states have internal predecessors, (84), 40 states have call successors, (40), 10 states have call predecessors, (40), 10 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-09 05:55:46,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 159 transitions. [2024-11-09 05:55:46,771 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 159 transitions. Word has length 18 [2024-11-09 05:55:46,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:46,771 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 159 transitions. [2024-11-09 05:55:46,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:55:46,772 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 159 transitions. [2024-11-09 05:55:46,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 05:55:46,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:46,773 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:55:46,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:55:46,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:55:46,973 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:46,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:46,974 INFO L85 PathProgramCache]: Analyzing trace with hash 549493670, now seen corresponding path program 1 times [2024-11-09 05:55:46,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:46,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586433481] [2024-11-09 05:55:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:46,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:55:46,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678542640] [2024-11-09 05:55:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:46,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:55:46,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:55:46,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:55:47,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:55:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:47,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 05:55:47,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:55:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:47,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:55:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:48,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586433481] [2024-11-09 05:55:48,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:55:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678542640] [2024-11-09 05:55:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678542640] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:55:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [413711365] [2024-11-09 05:55:48,063 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 05:55:48,063 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:55:48,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:55:48,064 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:55:48,064 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:55:48,319 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 52 for LOIs [2024-11-09 05:55:48,414 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:55:53,288 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2569#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (<= ~counter~0 5) (or (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_14| Int)) (and (<= (mod |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_14| 4294967296) (mod |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_19| 4294967296)) (<= (+ (mod |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_19| 4294967296) 1) (mod |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_14| 4294967296)))) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_13| Int)) (and (<= (+ (mod |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_18| 4294967296) 1) (mod |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_13| 4294967296)) (<= (+ (mod |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| 4294967296) 1) (mod |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_13| 4294967296)) (not (= (mod (* |v_ULTIMATE.start_main_~n~0#1_BEFORE_CALL_18| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_13|) 4294967296) (mod (* |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_18| |v_ULTIMATE.start_main_~q~0#1_BEFORE_CALL_13|) 4294967296)))))))' at error location [2024-11-09 05:55:53,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:55:53,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:55:53,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-09 05:55:53,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725210056] [2024-11-09 05:55:53,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:55:53,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:55:53,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:53,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:55:53,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-09 05:55:53,291 INFO L87 Difference]: Start difference. First operand 120 states and 159 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:56:01,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:04,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:06,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:08,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:10,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:11,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 05:56:13,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:16,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:18,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:20,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:22,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:25,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:27,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:30,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:30,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:56:30,669 INFO L93 Difference]: Finished difference Result 151 states and 202 transitions. [2024-11-09 05:56:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:56:30,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-09 05:56:30,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:56:30,672 INFO L225 Difference]: With dead ends: 151 [2024-11-09 05:56:30,672 INFO L226 Difference]: Without dead ends: 142 [2024-11-09 05:56:30,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=65, Invalid=352, Unknown=3, NotChecked=0, Total=420 [2024-11-09 05:56:30,673 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 12 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 39 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:56:30,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 175 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 104 Invalid, 12 Unknown, 0 Unchecked, 30.7s Time] [2024-11-09 05:56:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-09 05:56:30,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 135. [2024-11-09 05:56:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 85 states have internal predecessors, (92), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (39), 36 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-09 05:56:30,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 174 transitions. [2024-11-09 05:56:30,708 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 174 transitions. Word has length 18 [2024-11-09 05:56:30,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:56:30,709 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 174 transitions. [2024-11-09 05:56:30,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 05:56:30,709 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 174 transitions. [2024-11-09 05:56:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 05:56:30,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:56:30,710 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:56:30,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:56:30,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 05:56:30,915 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:56:30,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:56:30,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1700831891, now seen corresponding path program 1 times [2024-11-09 05:56:30,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:56:30,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084449150] [2024-11-09 05:56:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:56:30,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:56:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:56:30,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049933567] [2024-11-09 05:56:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:56:30,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:56:30,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:56:30,947 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:56:30,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:56:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:56:31,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 05:56:31,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:56:31,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 05:56:31,078 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:56:31,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:56:31,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084449150] [2024-11-09 05:56:31,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:56:31,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049933567] [2024-11-09 05:56:31,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049933567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:56:31,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:56:31,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:56:31,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288241870] [2024-11-09 05:56:31,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:56:31,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:56:31,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:56:31,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:56:31,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:56:31,080 INFO L87 Difference]: Start difference. First operand 135 states and 174 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:56:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:56:31,303 INFO L93 Difference]: Finished difference Result 175 states and 227 transitions. [2024-11-09 05:56:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:56:31,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-09 05:56:31,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:56:31,306 INFO L225 Difference]: With dead ends: 175 [2024-11-09 05:56:31,306 INFO L226 Difference]: Without dead ends: 168 [2024-11-09 05:56:31,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:56:31,308 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:56:31,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 100 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:56:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-09 05:56:31,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2024-11-09 05:56:31,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 94 states have (on average 1.148936170212766) internal successors, (108), 100 states have internal predecessors, (108), 55 states have call successors, (55), 18 states have call predecessors, (55), 17 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-09 05:56:31,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 213 transitions. [2024-11-09 05:56:31,352 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 213 transitions. Word has length 20 [2024-11-09 05:56:31,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:56:31,353 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 213 transitions. [2024-11-09 05:56:31,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 05:56:31,353 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 213 transitions. [2024-11-09 05:56:31,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 05:56:31,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:56:31,354 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:56:31,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 05:56:31,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 05:56:31,555 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:56:31,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:56:31,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2007558511, now seen corresponding path program 2 times [2024-11-09 05:56:31,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:56:31,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132753852] [2024-11-09 05:56:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:56:31,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:56:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:56:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:56:31,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:56:31,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132753852] [2024-11-09 05:56:31,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132753852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:56:31,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196667661] [2024-11-09 05:56:31,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:56:31,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:56:31,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:56:31,786 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:56:31,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:56:31,841 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:56:31,842 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:56:31,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 05:56:31,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:56:32,104 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:56:32,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:56:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:56:48,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196667661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:56:48,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [74909205] [2024-11-09 05:56:48,723 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 05:56:48,723 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:56:48,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:56:48,724 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:56:48,724 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:56:48,917 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2024-11-09 05:56:48,927 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:56:49,264 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3834#(and (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (<= 7 ~counter~0))' at error location [2024-11-09 05:56:49,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:56:49,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:56:49,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 19 [2024-11-09 05:56:49,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216066648] [2024-11-09 05:56:49,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:56:49,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 05:56:49,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:56:49,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 05:56:49,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2024-11-09 05:56:49,268 INFO L87 Difference]: Start difference. First operand 167 states and 213 transitions. Second operand has 19 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:56:52,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:55,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:56:58,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:57:00,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:57:02,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:57:04,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 05:57:06,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:57:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:57:06,450 INFO L93 Difference]: Finished difference Result 197 states and 241 transitions. [2024-11-09 05:57:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 05:57:06,451 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2024-11-09 05:57:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:57:06,453 INFO L225 Difference]: With dead ends: 197 [2024-11-09 05:57:06,453 INFO L226 Difference]: Without dead ends: 143 [2024-11-09 05:57:06,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=366, Invalid=2390, Unknown=0, NotChecked=0, Total=2756 [2024-11-09 05:57:06,455 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 87 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 146 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:57:06,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 177 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 310 Invalid, 6 Unknown, 0 Unchecked, 16.5s Time] [2024-11-09 05:57:06,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-09 05:57:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2024-11-09 05:57:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 84 states have internal predecessors, (90), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-09 05:57:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 172 transitions. [2024-11-09 05:57:06,485 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 172 transitions. Word has length 26 [2024-11-09 05:57:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:57:06,486 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 172 transitions. [2024-11-09 05:57:06,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 05:57:06,486 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 172 transitions. [2024-11-09 05:57:06,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 05:57:06,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:57:06,488 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:57:06,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 05:57:06,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 05:57:06,693 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:57:06,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:57:06,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1292089680, now seen corresponding path program 1 times [2024-11-09 05:57:06,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:57:06,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440084902] [2024-11-09 05:57:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:57:06,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:57:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:57:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 05:57:08,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:57:08,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440084902] [2024-11-09 05:57:08,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440084902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:57:08,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143103808] [2024-11-09 05:57:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:57:08,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:57:08,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:57:08,854 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:57:08,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:57:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:57:09,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 05:57:09,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:57:09,754 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 05:57:09,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:57:17,613 WARN L286 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:57:27,810 WARN L286 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:57:52,916 WARN L286 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:58:21,765 WARN L286 SmtUtils]: Spent 9.42s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:58:52,131 WARN L286 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:59:03,343 WARN L286 SmtUtils]: Spent 6.63s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 05:59:12,231 WARN L286 SmtUtils]: Spent 8.69s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:00:02,991 WARN L286 SmtUtils]: Spent 41.48s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:00:09,272 WARN L286 SmtUtils]: Spent 6.25s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:00:33,950 WARN L286 SmtUtils]: Spent 14.07s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:00:44,003 WARN L286 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:01:00,490 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:01:09,516 WARN L286 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:01:21,695 WARN L286 SmtUtils]: Spent 12.18s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:01:31,753 WARN L286 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:01:39,870 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:01:54,103 WARN L286 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:02:00,162 WARN L286 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:02:08,223 WARN L286 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:02:16,334 WARN L286 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:02:24,459 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:02:32,518 WARN L286 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:02:34,542 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (let ((.cse5 (+ .cse1 1)) (.cse2 (mod |c_ULTIMATE.start_main_~q~0#1| 1073741824)) (.cse0 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (or (< .cse0 (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296)) (let ((.cse4 (mod (+ .cse2 |c_ULTIMATE.start_main_~p~0#1|) 4294967296)) (.cse3 (* (mod |c_ULTIMATE.start_main_~p~0#1| 2) 4294967295))) (and (or (< .cse1 (mod (+ .cse2 |c_ULTIMATE.start_main_~p~0#1| .cse3) 4294967296)) (< .cse4 .cse5)) (or (< .cse1 .cse4) (< (mod (+ (* .cse2 4294967295) |c_ULTIMATE.start_main_~r~0#1| (* |c_ULTIMATE.start_main_~p~0#1| 4294967295)) 4294967296) (mod (+ (* .cse2 3) |c_ULTIMATE.start_main_~p~0#1| .cse3) 4294967296))))) (< (* (mod (+ |c_ULTIMATE.start_main_~p~0#1| (* 2 |c_ULTIMATE.start_main_~q~0#1|)) 2147483648) 2) .cse5) (not (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 16 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|)) 4294967296) 0)) (< (* .cse2 4) (+ .cse0 1))))) is different from true [2024-11-09 06:02:44,914 WARN L286 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:02:58,479 WARN L286 SmtUtils]: Spent 9.53s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:03:11,239 WARN L286 SmtUtils]: Spent 8.72s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:03:23,518 WARN L286 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:03:33,689 WARN L286 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:03:39,758 WARN L286 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:03:48,089 WARN L286 SmtUtils]: Spent 8.33s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:03:56,148 WARN L286 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:04:06,316 WARN L286 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:04:14,348 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 06:04:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 19 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 3 not checked. [2024-11-09 06:04:14,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143103808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:04:14,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1736062964] [2024-11-09 06:04:14,354 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2024-11-09 06:04:14,354 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:04:14,354 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:04:14,354 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:04:14,354 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 06:04:30,919 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2024-11-09 06:04:30,968 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 06:04:37,293 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse18 (<= 2 c_~counter~0)) (.cse19 (= |c_ULTIMATE.start_main_~p~0#1| 0)) (.cse0 (<= 1 |c_#StackHeapBarrier|)) (.cse1 (<= c_~counter~0 5)) (.cse20 (= |c_ULTIMATE.start_main_~h~0#1| 0)) (.cse21 (<= 1 c_~counter~0))) (and (or (and .cse0 .cse1 (exists ((|v_ULTIMATE.start_main_~q~0#1_81| Int) (|v_ULTIMATE.start_main_~r~0#1_52| Int) (|v_ULTIMATE.start_main_~h~0#1_39| Int)) (let ((.cse16 (mod |v_ULTIMATE.start_main_~r~0#1_52| 4294967296))) (let ((.cse2 (mod |v_ULTIMATE.start_main_~q~0#1_81| 4294967296)) (.cse8 (+ .cse16 1))) (and (= (div .cse2 4) |c_ULTIMATE.start_main_~q~0#1|) (let ((.cse10 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| 4294967295)) (.cse3 (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~r~0#1_52|)) (.cse4 (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~r~0#1_52|)) (.cse5 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| 4294967295)) (.cse6 (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~r~0#1_52| |v_ULTIMATE.start_main_~r~0#1_52| 4)) (.cse7 (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| 4)) (.cse14 (mod (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81|) 4294967296)) (.cse11 (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~r~0#1_52|))) (or (let ((.cse9 (* 4294967294 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse12 (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse13 (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|))) (and (= (mod (+ .cse3 (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~h~0#1| |v_ULTIMATE.start_main_~h~0#1_39|) (* |c_ULTIMATE.start_main_~h~0#1| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~r~0#1_52| 4) (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~h~0#1_39| 4 |c_ULTIMATE.start_main_~q~0#1|) .cse4 .cse5 (* 4294967292 |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~r~0#1_52| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~r~0#1_52|) .cse6 .cse7 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~h~0#1_39|)) 4294967296) 0) (<= .cse8 (mod (+ (* 2 |c_ULTIMATE.start_main_~h~0#1|) |v_ULTIMATE.start_main_~q~0#1_81| (* 4294967294 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) (= (mod (+ .cse9 .cse10 .cse11 .cse12 .cse13) 4294967296) 0) (= (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~h~0#1_39|) (* 4294967292 |v_ULTIMATE.start_main_~q~0#1_81| |c_ULTIMATE.start_main_~h~0#1| |v_ULTIMATE.start_main_~r~0#1_52|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~r~0#1_52| 4) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |v_ULTIMATE.start_main_~q~0#1_81| |c_ULTIMATE.start_main_~q~0#1|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~h~0#1_39| |c_ULTIMATE.start_main_~q~0#1|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~r~0#1_52| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| 4294967295 |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~h~0#1_39|)) 4294967296) 0) (= (mod (+ .cse9 .cse11 .cse12 .cse13) 4294967296) .cse14) (= (mod (+ (* |v_ULTIMATE.start_main_~q~0#1_81| |c_ULTIMATE.start_main_~h~0#1| |v_ULTIMATE.start_main_~r~0#1_52| 4294967280) (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~h~0#1_39| 4294967284) (* |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~h~0#1_39|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~r~0#1_52| 12) (* |v_ULTIMATE.start_main_~q~0#1_81| 16 |v_ULTIMATE.start_main_~r~0#1_52| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| 16 |c_ULTIMATE.start_main_~h~0#1|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| 4294967295 |v_ULTIMATE.start_main_~h~0#1_39|) (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) (<= 3 c_~counter~0))) (and (= |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (= (mod (+ .cse10 .cse11) 4294967296) 0) (<= .cse8 .cse2) (= (mod (+ .cse3 .cse4 .cse5 .cse6 .cse7) 4294967296) 0) (= |v_ULTIMATE.start_main_~h~0#1_39| 0) (= .cse14 (mod .cse11 4294967296))))) (not (= .cse2 1)) (let ((.cse17 (div (mod (+ |c_ULTIMATE.start_main_~h~0#1| (* 4294967295 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 2)) (.cse15 (mod |c_ULTIMATE.start_main_~h~0#1| 4294967296))) (or (and (<= .cse15 .cse16) (= (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) |v_ULTIMATE.start_main_~r~0#1_52|) (= |c_ULTIMATE.start_main_~p~0#1| (+ .cse17 |c_ULTIMATE.start_main_~q~0#1|))) (and (= |c_ULTIMATE.start_main_~r~0#1| |v_ULTIMATE.start_main_~r~0#1_52|) (= |c_ULTIMATE.start_main_~p~0#1| .cse17) (<= .cse8 .cse15)))))))) .cse18) (and .cse19 .cse0 (<= (+ (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296) 1) (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296)) .cse1 .cse20 .cse21)) (or (and .cse0 .cse1 .cse18) (and .cse19 .cse0 .cse1 .cse20 .cse21)))) is different from false [2024-11-09 06:04:39,307 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse6 (<= 2 |c_ULTIMATE.start_main_#t~post6#1|)) (.cse0 (= |c_ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (<= 1 |c_#StackHeapBarrier|)) (.cse2 (<= 1 |c_ULTIMATE.start_main_#t~post6#1|)) (.cse4 (= |c_ULTIMATE.start_main_~h~0#1| 0)) (.cse5 (<= |c_ULTIMATE.start_main_#t~post6#1| 5))) (and (let ((.cse3 (<= c_~counter~0 6))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= 2 c_~counter~0)) (and .cse6 .cse1 .cse3 .cse5 (<= 3 c_~counter~0)))) (let ((.cse23 (= (+ |c_ULTIMATE.start_main_#t~post6#1| 1) c_~counter~0))) (or (and .cse6 (exists ((|v_ULTIMATE.start_main_~q~0#1_81| Int) (|v_ULTIMATE.start_main_~r~0#1_52| Int) (|v_ULTIMATE.start_main_~h~0#1_39| Int)) (let ((.cse21 (mod |v_ULTIMATE.start_main_~r~0#1_52| 4294967296))) (let ((.cse7 (mod |v_ULTIMATE.start_main_~q~0#1_81| 4294967296)) (.cse10 (+ .cse21 1))) (and (= (div .cse7 4) |c_ULTIMATE.start_main_~q~0#1|) (not (= .cse7 1)) (let ((.cse11 (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~r~0#1_52|)) (.cse12 (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~r~0#1_52|)) (.cse13 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| 4294967295)) (.cse14 (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~r~0#1_52| |v_ULTIMATE.start_main_~r~0#1_52| 4)) (.cse15 (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| 4)) (.cse8 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| 4294967295)) (.cse9 (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~r~0#1_52|)) (.cse16 (mod (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81|) 4294967296))) (or (and (= |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (= (mod (+ .cse8 .cse9) 4294967296) 0) (<= .cse10 .cse7) (= (mod (+ .cse11 .cse12 .cse13 .cse14 .cse15) 4294967296) 0) (= |v_ULTIMATE.start_main_~h~0#1_39| 0) (= .cse16 (mod .cse9 4294967296))) (let ((.cse17 (* 4294967294 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse18 (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse19 (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|))) (and (= (mod (+ .cse11 (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~h~0#1| |v_ULTIMATE.start_main_~h~0#1_39|) (* |c_ULTIMATE.start_main_~h~0#1| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~r~0#1_52| 4) (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~h~0#1_39| 4 |c_ULTIMATE.start_main_~q~0#1|) .cse12 .cse13 (* 4294967292 |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~r~0#1_52| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~r~0#1_52|) .cse14 .cse15 (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~h~0#1_39|)) 4294967296) 0) (<= .cse10 (mod (+ (* 2 |c_ULTIMATE.start_main_~h~0#1|) |v_ULTIMATE.start_main_~q~0#1_81| (* 4294967294 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) (= (mod (+ .cse17 .cse8 .cse9 .cse18 .cse19) 4294967296) 0) (<= 3 |c_ULTIMATE.start_main_#t~post6#1|) (= (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~h~0#1_39|) (* 4294967292 |v_ULTIMATE.start_main_~q~0#1_81| |c_ULTIMATE.start_main_~h~0#1| |v_ULTIMATE.start_main_~r~0#1_52|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~r~0#1_52| 4) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |v_ULTIMATE.start_main_~q~0#1_81| |c_ULTIMATE.start_main_~q~0#1|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~h~0#1_39| |c_ULTIMATE.start_main_~q~0#1|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~r~0#1_52| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| 4294967295 |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| |c_ULTIMATE.start_main_~h~0#1| 4) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~h~0#1_39|)) 4294967296) 0) (= (mod (+ .cse17 .cse9 .cse18 .cse19) 4294967296) .cse16) (= (mod (+ (* |v_ULTIMATE.start_main_~q~0#1_81| |c_ULTIMATE.start_main_~h~0#1| |v_ULTIMATE.start_main_~r~0#1_52| 4294967280) (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~h~0#1_39| 4294967284) (* |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~h~0#1_39|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~h~0#1_39| |v_ULTIMATE.start_main_~r~0#1_52| 12) (* |v_ULTIMATE.start_main_~q~0#1_81| 16 |v_ULTIMATE.start_main_~r~0#1_52| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| 16 |c_ULTIMATE.start_main_~h~0#1|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| 4294967295 |v_ULTIMATE.start_main_~h~0#1_39|) (* |c_ULTIMATE.start_main_~n~0#1| |v_ULTIMATE.start_main_~q~0#1_81| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |v_ULTIMATE.start_main_~q~0#1_81| |v_ULTIMATE.start_main_~q~0#1_81| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0))))) (let ((.cse22 (div (mod (+ |c_ULTIMATE.start_main_~h~0#1| (* 4294967295 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 2)) (.cse20 (mod |c_ULTIMATE.start_main_~h~0#1| 4294967296))) (or (and (<= .cse20 .cse21) (= (+ |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) |v_ULTIMATE.start_main_~r~0#1_52|) (= |c_ULTIMATE.start_main_~p~0#1| (+ .cse22 |c_ULTIMATE.start_main_~q~0#1|))) (and (= |c_ULTIMATE.start_main_~r~0#1| |v_ULTIMATE.start_main_~r~0#1_52|) (= |c_ULTIMATE.start_main_~p~0#1| .cse22) (<= .cse10 .cse20)))))))) .cse1 .cse5 .cse23) (and .cse0 .cse1 .cse2 (<= (+ (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296) 1) (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296)) .cse4 .cse5 .cse23))))) is different from false [2024-11-09 06:05:32,075 WARN L286 SmtUtils]: Spent 13.56s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:06:26,197 WARN L286 SmtUtils]: Spent 37.01s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:07:24,936 WARN L286 SmtUtils]: Spent 38.76s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 06:07:44,847 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4726#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (= |__VERIFIER_assert_#in~cond| 0) (<= ~counter~0 5))' at error location [2024-11-09 06:07:44,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 06:07:44,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:07:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 12] total 23 [2024-11-09 06:07:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071350513] [2024-11-09 06:07:44,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:07:44,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 06:07:44,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:07:44,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 06:07:44,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1009, Unknown=29, NotChecked=204, Total=1406 [2024-11-09 06:07:44,849 INFO L87 Difference]: Start difference. First operand 139 states and 172 transitions. Second operand has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-09 06:07:47,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:07:49,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:07:51,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:07:53,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:07:55,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:07:57,341 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (let ((.cse5 (+ .cse1 1))) (and (let ((.cse0 (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296))) (or (= .cse0 1) (not (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0)) (let ((.cse2 (div .cse0 4))) (let ((.cse4 (mod (+ .cse2 |c_ULTIMATE.start_main_~p~0#1|) 4294967296)) (.cse3 (* (mod |c_ULTIMATE.start_main_~p~0#1| 2) 4294967295))) (and (or (< .cse1 (mod (+ .cse2 |c_ULTIMATE.start_main_~p~0#1| .cse3) 4294967296)) (< .cse4 .cse5)) (or (< .cse1 .cse4) (< (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* .cse2 4294967295) (* |c_ULTIMATE.start_main_~p~0#1| 4294967295)) 4294967296) (mod (+ |c_ULTIMATE.start_main_~p~0#1| (* .cse2 3) .cse3) 4294967296)))))))) (<= .cse5 (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296))))) is different from false [2024-11-09 06:07:59,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:01,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:03,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 06:08:05,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:07,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:09,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 06:08:11,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:13,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:15,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:17,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:19,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:21,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:23,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:25,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:27,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:29,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:32,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 06:08:34,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 06:08:36,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 06:08:37,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:40,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 06:08:42,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 06:08:44,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 06:08:46,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 06:08:48,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 06:08:50,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:52,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:54,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:56,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:08:58,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:09:00,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:09:02,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 06:09:04,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:09:06,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:09:08,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:09:10,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:09:12,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 06:09:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:09:13,193 INFO L93 Difference]: Finished difference Result 168 states and 211 transitions. [2024-11-09 06:09:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:09:13,194 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 46 [2024-11-09 06:09:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:09:13,196 INFO L225 Difference]: With dead ends: 168 [2024-11-09 06:09:13,196 INFO L226 Difference]: Without dead ends: 148 [2024-11-09 06:09:13,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 11 SemanticMatches, 38 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 271.8s TimeCoverageRelationStatistics Valid=174, Invalid=1072, Unknown=30, NotChecked=284, Total=1560 [2024-11-09 06:09:13,197 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 20 mSolverCounterUnsat, 40 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 40 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 86.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:09:13,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 248 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 310 Invalid, 40 Unknown, 133 Unchecked, 86.2s Time] [2024-11-09 06:09:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-09 06:09:13,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-09 06:09:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 87 states have (on average 1.0919540229885059) internal successors, (95), 91 states have internal predecessors, (95), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-09 06:09:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 179 transitions. [2024-11-09 06:09:13,244 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 179 transitions. Word has length 46 [2024-11-09 06:09:13,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:09:13,244 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 179 transitions. [2024-11-09 06:09:13,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-09 06:09:13,245 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 179 transitions. [2024-11-09 06:09:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 06:09:13,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:09:13,246 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:09:13,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 06:09:13,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 06:09:13,447 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:09:13,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:09:13,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1408989022, now seen corresponding path program 1 times [2024-11-09 06:09:13,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:09:13,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593138693] [2024-11-09 06:09:13,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:13,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:09:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 06:09:13,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336025938] [2024-11-09 06:09:13,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:09:13,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:09:13,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:09:13,516 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:09:13,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 06:09:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:09:13,632 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:09:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:09:13,748 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 06:09:13,749 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:09:13,753 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 06:09:13,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 06:09:13,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 06:09:13,961 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:09:13,992 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 06:09:13,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:09:13 BoogieIcfgContainer [2024-11-09 06:09:13,995 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 06:09:13,995 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 06:09:13,995 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 06:09:13,996 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 06:09:13,996 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:55:27" (3/4) ... [2024-11-09 06:09:13,997 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 06:09:14,048 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 06:09:14,048 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 06:09:14,048 INFO L158 Benchmark]: Toolchain (without parser) took 827405.66ms. Allocated memory was 146.8MB in the beginning and 220.2MB in the end (delta: 73.4MB). Free memory was 110.4MB in the beginning and 119.1MB in the end (delta: -8.7MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. [2024-11-09 06:09:14,049 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 146.8MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:09:14,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.04ms. Allocated memory is still 146.8MB. Free memory was 110.2MB in the beginning and 96.3MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 06:09:14,049 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.67ms. Allocated memory is still 146.8MB. Free memory was 96.3MB in the beginning and 94.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:09:14,050 INFO L158 Benchmark]: Boogie Preprocessor took 25.66ms. Allocated memory is still 146.8MB. Free memory was 94.7MB in the beginning and 93.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:09:14,050 INFO L158 Benchmark]: RCFGBuilder took 535.53ms. Allocated memory is still 146.8MB. Free memory was 93.4MB in the beginning and 76.2MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-09 06:09:14,050 INFO L158 Benchmark]: TraceAbstraction took 826418.57ms. Allocated memory was 146.8MB in the beginning and 220.2MB in the end (delta: 73.4MB). Free memory was 75.4MB in the beginning and 122.3MB in the end (delta: -46.9MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2024-11-09 06:09:14,051 INFO L158 Benchmark]: Witness Printer took 52.69ms. Allocated memory is still 220.2MB. Free memory was 122.3MB in the beginning and 119.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 06:09:14,052 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 146.8MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.04ms. Allocated memory is still 146.8MB. Free memory was 110.2MB in the beginning and 96.3MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.67ms. Allocated memory is still 146.8MB. Free memory was 96.3MB in the beginning and 94.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.66ms. Allocated memory is still 146.8MB. Free memory was 94.7MB in the beginning and 93.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 535.53ms. Allocated memory is still 146.8MB. Free memory was 93.4MB in the beginning and 76.2MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 826418.57ms. Allocated memory was 146.8MB in the beginning and 220.2MB in the end (delta: 73.4MB). Free memory was 75.4MB in the beginning and 122.3MB in the end (delta: -46.9MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * Witness Printer took 52.69ms. Allocated memory is still 220.2MB. Free memory was 122.3MB in the beginning and 119.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; [L21] unsigned int n, p, q, r, h; [L23] n = __VERIFIER_nondet_uint() [L24] CALL assume_abort_if_not(n < 4294967295 / 4) [L9] COND FALSE !(!cond) [L24] RET assume_abort_if_not(n < 4294967295 / 4) [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 VAL [counter=0, h=0, n=-4294967234, p=0, q=1, r=-4294967234] [L30] EXPR counter++ VAL [counter=1, h=0, n=-4294967234, p=0, q=1, r=-4294967234] [L30] COND TRUE counter++<5 [L31] COND FALSE !(!(q <= n)) [L34] q = 4 * q VAL [counter=1, h=0, n=-4294967234, p=0, q=4, r=-4294967234] [L30] EXPR counter++ VAL [counter=2, h=0, n=-4294967234, p=0, q=4, r=-4294967234] [L30] COND TRUE counter++<5 [L31] COND FALSE !(!(q <= n)) [L34] q = 4 * q VAL [counter=2, h=0, n=-4294967234, p=0, q=16, r=-4294967234] [L30] EXPR counter++ VAL [counter=3, h=0, n=-4294967234, p=0, q=16, r=-4294967234] [L30] COND TRUE counter++<5 [L31] COND FALSE !(!(q <= n)) [L34] q = 4 * q VAL [counter=3, h=0, n=-4294967234, p=0, q=64, r=-4294967234] [L30] EXPR counter++ VAL [counter=4, h=0, n=-4294967234, p=0, q=64, r=-4294967234] [L30] COND TRUE counter++<5 [L31] COND TRUE !(q <= n) VAL [counter=4, h=0, n=-4294967234, p=0, q=64, r=-4294967234] [L38] EXPR counter++ VAL [counter=5, h=0, n=-4294967234, p=0, q=64, r=-4294967234] [L38] COND TRUE counter++<5 [L39] CALL __VERIFIER_assert(r < 2 * p + q) VAL [\old(cond)=1, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L39] RET __VERIFIER_assert(r < 2 * p + q) VAL [counter=5, h=0, n=-4294967234, p=0, q=64, r=-4294967234] [L40] CALL __VERIFIER_assert(p*p + r*q == n*q) VAL [\old(cond)=1, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L40] RET __VERIFIER_assert(p*p + r*q == n*q) VAL [counter=5, h=0, n=-4294967234, p=0, q=64, r=-4294967234] [L41] CALL __VERIFIER_assert(h * h * h - 12 * h * n * q + 16 * n * p * q - h * q * q - 4 * p * q * q + 12 * h * q * r - 16 * p * q * r == 0) VAL [\old(cond)=1, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L41] RET __VERIFIER_assert(h * h * h - 12 * h * n * q + 16 * n * p * q - h * q * q - 4 * p * q * q + 12 * h * q * r - 16 * p * q * r == 0) VAL [counter=5, h=0, n=-4294967234, p=0, q=64, r=-4294967234] [L42] CALL __VERIFIER_assert(h * h * n - 4 * h * n * p + 4 * (n * n) * q - n * q * q - h * h * r + 4 * h * p * r - 8 * n * q * r + q * q * r + 4 * q * r * r == 0) VAL [\old(cond)=1, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L42] RET __VERIFIER_assert(h * h * n - 4 * h * n * p + 4 * (n * n) * q - n * q * q - h * h * r + 4 * h * p * r - 8 * n * q * r + q * q * r + 4 * q * r * r == 0) VAL [counter=5, h=0, n=-4294967234, p=0, q=64, r=-4294967234] [L43] CALL __VERIFIER_assert(h * h * p - 4 * h * n * q + 4 * n * p * q - p * q * q + 4 * h * q * r - 4 * p * q * r == 0) VAL [\old(cond)=1, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L43] RET __VERIFIER_assert(h * h * p - 4 * h * n * q + 4 * n * p * q - p * q * q + 4 * h * q * r - 4 * p * q * r == 0) VAL [counter=5, h=0, n=-4294967234, p=0, q=64, r=-4294967234] [L44] CALL __VERIFIER_assert(p * p - n * q + q * r == 0) VAL [\old(cond)=1, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L44] RET __VERIFIER_assert(p * p - n * q + q * r == 0) VAL [counter=5, h=0, n=-4294967234, p=0, q=64, r=-4294967234] [L46] COND FALSE !(!(q != 1)) [L49] q = q / 4 [L50] h = p + q [L51] p = p / 2 [L52] COND TRUE r >= h [L53] p = p + q [L54] r = r - h VAL [counter=5, h=16, n=-4294967234, p=16, q=16, r=-4294967250] [L38] EXPR counter++ VAL [counter=6, h=16, n=-4294967234, p=16, q=16, r=-4294967250] [L38] COND FALSE !(counter++<5) [L57] CALL __VERIFIER_assert(h*h*h - 12*h*n + 16*n*p + 12*h*r - 16*p*r - h - 4*p == 0) VAL [\old(cond)=0, counter=6] [L12] COND TRUE !(cond) VAL [\old(cond)=0, counter=6] [L14] reach_error() VAL [\old(cond)=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 826.3s, OverallIterations: 15, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 155.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 mSolverCounterUnknown, 363 SdHoareTripleChecker+Valid, 145.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 285 mSDsluCounter, 1817 SdHoareTripleChecker+Invalid, 144.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 133 IncrementalHoareTripleChecker+Unchecked, 1408 mSDsCounter, 277 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1459 IncrementalHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 277 mSolverCounterUnsat, 409 mSDtfsCounter, 1459 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 576 GetRequests, 349 SyntacticMatches, 17 SemanticMatches, 210 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1745 ImplicationChecksByTransitivity, 288.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=12, InterpolantAutomatonStates: 134, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 76 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 447.7s InterpolantComputationTime, 523 NumberOfCodeBlocks, 514 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 489 ConstructedInterpolants, 0 QuantifiedInterpolants, 5200 SizeOfPredicates, 15 NumberOfNonLiveVariables, 649 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 27 InterpolantComputations, 7 PerfectInterpolantSequences, 267/383 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: 0.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 19, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 34, TOOLS_POST_TIME: 0.5s, TOOLS_POST_CALL_APPLICATIONS: 2, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 36, TOOLS_QUANTIFIERELIM_TIME: 0.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 72, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 19, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.6s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.6s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, 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: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 130, DAG_COMPRESSION_RETAINED_NODES: 70, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-09 06:09:14,276 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2024-11-09 06:09:14,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5e6342f-e4d4-44e0-b710-3d15edd89af8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE