./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants64/linear-inequality-inv-d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/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_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invariants64/linear-inequality-inv-d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/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 64bit --witnessprinter.graph.data.programhash 87519343d07fb680fe2f0e8c357c18ba883357d08bc5bf0ec4a3dc8f1cac4329 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:23:44,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:23:44,764 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 07:23:44,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:23:44,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:23:44,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:23:44,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:23:44,832 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:23:44,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:23:44,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:23:44,836 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:23:44,836 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:23:44,837 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:23:44,837 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:23:44,838 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:23:44,838 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:23:44,838 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:23:44,838 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:23:44,839 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:23:44,839 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:23:44,844 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:23:44,849 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:23:44,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:23:44,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:23:44,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:23:44,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:23:44,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:23:44,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:23:44,852 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:23:44,852 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:23:44,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:23:44,853 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:23:44,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:23:44,855 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:23:44,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:23:44,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:23:44,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:23:44,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:23:44,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:23:44,857 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:23:44,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:23:44,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:23:44,858 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:23:44,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:23:44,859 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_d58bdc6e-5508-421c-a2ee-011369462d6d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87519343d07fb680fe2f0e8c357c18ba883357d08bc5bf0ec4a3dc8f1cac4329 [2024-11-09 07:23:45,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:23:45,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:23:45,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:23:45,263 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:23:45,264 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:23:45,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/loop-invariants64/linear-inequality-inv-d.c Unable to find full path for "g++" [2024-11-09 07:23:47,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:23:47,621 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:23:47,622 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/sv-benchmarks/c/loop-invariants64/linear-inequality-inv-d.c [2024-11-09 07:23:47,648 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/data/f8cb9dc45/ea12eca51d594c9c925d5a5ebfb6ab88/FLAG385a41bbb [2024-11-09 07:23:47,663 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/data/f8cb9dc45/ea12eca51d594c9c925d5a5ebfb6ab88 [2024-11-09 07:23:47,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:23:47,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:23:47,669 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:23:47,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:23:47,678 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:23:47,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:47,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47584209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47, skipping insertion in model container [2024-11-09 07:23:47,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:47,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:23:47,911 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_d58bdc6e-5508-421c-a2ee-011369462d6d/sv-benchmarks/c/loop-invariants64/linear-inequality-inv-d.c[858,871] [2024-11-09 07:23:47,919 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_d58bdc6e-5508-421c-a2ee-011369462d6d/sv-benchmarks/c/loop-invariants64/linear-inequality-inv-d.c[950,963] [2024-11-09 07:23:47,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:23:47,934 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:23:47,949 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_d58bdc6e-5508-421c-a2ee-011369462d6d/sv-benchmarks/c/loop-invariants64/linear-inequality-inv-d.c[858,871] [2024-11-09 07:23:47,950 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_d58bdc6e-5508-421c-a2ee-011369462d6d/sv-benchmarks/c/loop-invariants64/linear-inequality-inv-d.c[950,963] [2024-11-09 07:23:47,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:23:47,972 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:23:47,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47 WrapperNode [2024-11-09 07:23:47,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:23:47,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:23:47,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:23:47,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:23:47,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:47,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:48,011 INFO L138 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2024-11-09 07:23:48,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:23:48,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:23:48,012 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:23:48,013 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:23:48,020 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:48,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:48,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:48,022 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:48,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:48,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:48,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:48,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:48,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:23:48,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:23:48,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:23:48,033 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:23:48,034 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47" (1/1) ... [2024-11-09 07:23:48,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:23:48,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:48,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:23:48,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:23:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:23:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:23:48,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:23:48,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:23:48,217 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:23:48,219 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:23:48,357 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 07:23:48,357 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:23:48,381 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:23:48,381 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:23:48,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:23:48 BoogieIcfgContainer [2024-11-09 07:23:48,382 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:23:48,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:23:48,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:23:48,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:23:48,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:23:47" (1/3) ... [2024-11-09 07:23:48,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3bfce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:23:48, skipping insertion in model container [2024-11-09 07:23:48,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:47" (2/3) ... [2024-11-09 07:23:48,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3bfce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:23:48, skipping insertion in model container [2024-11-09 07:23:48,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:23:48" (3/3) ... [2024-11-09 07:23:48,394 INFO L112 eAbstractionObserver]: Analyzing ICFG linear-inequality-inv-d.c [2024-11-09 07:23:48,415 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:23:48,415 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 07:23:48,484 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:23:48,492 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;@7266b623, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:23:48,492 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 07:23:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:23:48,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 07:23:48,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:48,504 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 07:23:48,505 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:48,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:48,510 INFO L85 PathProgramCache]: Analyzing trace with hash 63025968, now seen corresponding path program 1 times [2024-11-09 07:23:48,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:48,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188743512] [2024-11-09 07:23:48,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:48,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:48,933 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 07:23:48,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:48,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188743512] [2024-11-09 07:23:48,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188743512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:23:48,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:23:48,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:23:48,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480153707] [2024-11-09 07:23:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:23:48,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:23:48,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:48,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:23:48,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:23:48,976 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:23:49,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:49,032 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2024-11-09 07:23:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:23:49,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-09 07:23:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:49,043 INFO L225 Difference]: With dead ends: 22 [2024-11-09 07:23:49,043 INFO L226 Difference]: Without dead ends: 12 [2024-11-09 07:23:49,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:23:49,050 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:49,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:23:49,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-09 07:23:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-09 07:23:49,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:23:49,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-11-09 07:23:49,090 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2024-11-09 07:23:49,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:49,091 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-11-09 07:23:49,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:23:49,091 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-11-09 07:23:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:23:49,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:49,092 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:23:49,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:23:49,093 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:49,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:49,094 INFO L85 PathProgramCache]: Analyzing trace with hash 431765611, now seen corresponding path program 1 times [2024-11-09 07:23:49,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:49,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424070193] [2024-11-09 07:23:49,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:49,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:23:49,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:49,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424070193] [2024-11-09 07:23:49,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424070193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:49,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926695243] [2024-11-09 07:23:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:49,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:49,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:23:49,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:23:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:49,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:23:49,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:23:49,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:23:49,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:23:49,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:23:49,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926695243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:23:49,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [989678771] [2024-11-09 07:23:49,901 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:23:49,901 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:23:49,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:23:49,913 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:23:49,914 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:23:50,323 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:23:56,902 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '101#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~i~0#1_18| Int) (|v_ULTIMATE.start_main_~n~0#1_14| Int)) (and (<= (mod |v_ULTIMATE.start_main_~n~0#1_14| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_18| 18446744073709551616)) (<= 0 |v_ULTIMATE.start_main_~i~0#1_18|))) (exists ((|v_ULTIMATE.start_main_~v~0#1_16| Int) (|v_ULTIMATE.start_main_~s~0#1_21| Int)) (<= (+ (mod |v_ULTIMATE.start_main_~s~0#1_21| 18446744073709551616) 1) (mod |v_ULTIMATE.start_main_~v~0#1_16| 4294967296))))' at error location [2024-11-09 07:23:56,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:23:56,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:23:56,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 07:23:56,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550529360] [2024-11-09 07:23:56,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:23:56,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:23:56,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:56,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:23:56,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=97, Unknown=3, NotChecked=0, Total=132 [2024-11-09 07:23:56,911 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:23:57,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:57,029 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2024-11-09 07:23:57,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:23:57,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 07:23:57,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:57,031 INFO L225 Difference]: With dead ends: 24 [2024-11-09 07:23:57,031 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 07:23:57,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=46, Invalid=133, Unknown=3, NotChecked=0, Total=182 [2024-11-09 07:23:57,034 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:57,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:23:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 07:23:57,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2024-11-09 07:23:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:23:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2024-11-09 07:23:57,041 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 7 [2024-11-09 07:23:57,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:57,042 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2024-11-09 07:23:57,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:23:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2024-11-09 07:23:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:23:57,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:57,043 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:23:57,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 07:23:57,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-09 07:23:57,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:57,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:57,245 INFO L85 PathProgramCache]: Analyzing trace with hash 499836113, now seen corresponding path program 1 times [2024-11-09 07:23:57,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:57,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050114697] [2024-11-09 07:23:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:23:57,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:57,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050114697] [2024-11-09 07:23:57,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050114697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:57,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054026343] [2024-11-09 07:23:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:57,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:57,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:57,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:23:57,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:23:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:57,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:23:57,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:23:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:23:57,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:23:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:23:57,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054026343] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:23:57,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2001340142] [2024-11-09 07:23:57,687 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 07:23:57,688 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:23:57,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:23:57,689 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:23:57,689 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:23:57,937 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:23:58,121 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '211#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~s~0#1_29| Int)) (<= 18446744065119617026 (mod |v_ULTIMATE.start_main_~s~0#1_29| 18446744073709551616))) (exists ((|v_ULTIMATE.start_main_~i~0#1_24| Int) (|v_ULTIMATE.start_main_~n~0#1_15| Int)) (and (<= 0 |v_ULTIMATE.start_main_~i~0#1_24|) (<= (mod |v_ULTIMATE.start_main_~n~0#1_15| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_24| 18446744073709551616)))))' at error location [2024-11-09 07:23:58,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:23:58,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:23:58,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-09 07:23:58,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580042246] [2024-11-09 07:23:58,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:23:58,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:23:58,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:23:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:23:58,126 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:23:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:58,172 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-11-09 07:23:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:23:58,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 07:23:58,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:58,173 INFO L225 Difference]: With dead ends: 26 [2024-11-09 07:23:58,173 INFO L226 Difference]: Without dead ends: 18 [2024-11-09 07:23:58,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:23:58,176 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 9 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:23:58,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 22 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:23:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-09 07:23:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-09 07:23:58,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:23:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-09 07:23:58,189 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2024-11-09 07:23:58,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:58,190 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-09 07:23:58,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:23:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-09 07:23:58,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 07:23:58,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:58,192 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2024-11-09 07:23:58,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 07:23:58,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 07:23:58,398 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:58,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:58,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2045523868, now seen corresponding path program 2 times [2024-11-09 07:23:58,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:58,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147359601] [2024-11-09 07:23:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:58,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:23:58,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:58,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147359601] [2024-11-09 07:23:58,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147359601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:58,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899773101] [2024-11-09 07:23:58,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:23:58,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:58,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:58,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:23:58,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:23:58,811 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 07:23:58,811 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:23:58,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:23:58,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:23:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:23:58,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:23:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:23:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899773101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:23:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [579927897] [2024-11-09 07:23:59,267 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:23:59,267 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:23:59,268 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:23:59,268 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:23:59,269 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:23:59,391 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:06,071 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '354#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~v~0#1_30| Int) (|v_ULTIMATE.start_main_~s~0#1_43| Int)) (<= (+ (mod |v_ULTIMATE.start_main_~s~0#1_43| 18446744073709551616) 1) (mod |v_ULTIMATE.start_main_~v~0#1_30| 4294967296))) (exists ((|v_ULTIMATE.start_main_~i~0#1_33| Int) (|v_ULTIMATE.start_main_~n~0#1_16| Int)) (and (<= 0 |v_ULTIMATE.start_main_~i~0#1_33|) (<= (mod |v_ULTIMATE.start_main_~n~0#1_16| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_33| 18446744073709551616)))))' at error location [2024-11-09 07:24:06,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:06,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:06,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 07:24:06,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140151363] [2024-11-09 07:24:06,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:06,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 07:24:06,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:06,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 07:24:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=229, Unknown=3, NotChecked=0, Total=306 [2024-11-09 07:24:06,075 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:06,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:06,436 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2024-11-09 07:24:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 07:24:06,436 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 07:24:06,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:06,437 INFO L225 Difference]: With dead ends: 44 [2024-11-09 07:24:06,437 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 07:24:06,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=178, Invalid=469, Unknown=3, NotChecked=0, Total=650 [2024-11-09 07:24:06,443 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 63 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:06,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 37 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:24:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 07:24:06,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-11-09 07:24:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:06,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-09 07:24:06,456 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 13 [2024-11-09 07:24:06,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:06,457 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-09 07:24:06,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:06,457 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-09 07:24:06,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 07:24:06,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:06,460 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1] [2024-11-09 07:24:06,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:24:06,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-09 07:24:06,661 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:06,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:06,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1979678508, now seen corresponding path program 2 times [2024-11-09 07:24:06,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:06,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290094399] [2024-11-09 07:24:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:06,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:07,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:07,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290094399] [2024-11-09 07:24:07,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290094399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:07,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603239950] [2024-11-09 07:24:07,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:24:07,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:07,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:07,198 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:07,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:24:07,317 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-09 07:24:07,317 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:24:07,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 07:24:07,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:07,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:08,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603239950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:08,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1620944293] [2024-11-09 07:24:08,066 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 07:24:08,067 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:08,067 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:08,067 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:08,068 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:08,173 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:08,379 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '618#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~n~0#1_17| Int) (|v_ULTIMATE.start_main_~i~0#1_46| Int)) (and (<= 0 |v_ULTIMATE.start_main_~i~0#1_46|) (<= (mod |v_ULTIMATE.start_main_~n~0#1_17| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_46| 18446744073709551616)))) (exists ((|v_ULTIMATE.start_main_~s~0#1_65| Int)) (<= 18446744065119617026 (mod |v_ULTIMATE.start_main_~s~0#1_65| 18446744073709551616))))' at error location [2024-11-09 07:24:08,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:08,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:08,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2024-11-09 07:24:08,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854980279] [2024-11-09 07:24:08,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:08,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 07:24:08,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:08,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 07:24:08,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=350, Unknown=0, NotChecked=0, Total=552 [2024-11-09 07:24:08,383 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:08,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:08,497 INFO L93 Difference]: Finished difference Result 68 states and 96 transitions. [2024-11-09 07:24:08,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 07:24:08,498 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 07:24:08,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:08,500 INFO L225 Difference]: With dead ends: 68 [2024-11-09 07:24:08,500 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 07:24:08,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=350, Unknown=0, NotChecked=0, Total=552 [2024-11-09 07:24:08,502 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 49 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:08,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 61 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:24:08,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 07:24:08,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2024-11-09 07:24:08,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 46 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2024-11-09 07:24:08,512 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 22 [2024-11-09 07:24:08,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:08,513 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2024-11-09 07:24:08,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:08,513 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2024-11-09 07:24:08,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 07:24:08,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:08,514 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1] [2024-11-09 07:24:08,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:24:08,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:08,720 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:08,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:08,720 INFO L85 PathProgramCache]: Analyzing trace with hash -332395586, now seen corresponding path program 3 times [2024-11-09 07:24:08,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:08,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672692987] [2024-11-09 07:24:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:08,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:09,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:09,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672692987] [2024-11-09 07:24:09,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672692987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:09,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306531331] [2024-11-09 07:24:09,383 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:24:09,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:09,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:09,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:09,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:24:09,467 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:24:09,468 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:24:09,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 07:24:09,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:09,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:10,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306531331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:10,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [449650110] [2024-11-09 07:24:10,871 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:24:10,871 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:10,872 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:10,872 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:10,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:10,978 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:17,708 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '944#(and (exists ((|v_ULTIMATE.start_main_~n~0#1_18| Int) (|v_ULTIMATE.start_main_~i~0#1_61| Int)) (and (<= 0 |v_ULTIMATE.start_main_~i~0#1_61|) (<= (mod |v_ULTIMATE.start_main_~n~0#1_18| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_61| 18446744073709551616)))) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~v~0#1_57| Int) (|v_ULTIMATE.start_main_~s~0#1_91| Int)) (<= (+ (mod |v_ULTIMATE.start_main_~s~0#1_91| 18446744073709551616) 1) (mod |v_ULTIMATE.start_main_~v~0#1_57| 4294967296))))' at error location [2024-11-09 07:24:17,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:17,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:17,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-09 07:24:17,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102938635] [2024-11-09 07:24:17,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:17,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 07:24:17,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:17,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 07:24:17,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=601, Unknown=3, NotChecked=0, Total=870 [2024-11-09 07:24:17,713 INFO L87 Difference]: Start difference. First operand 47 states and 64 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:18,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:18,741 INFO L93 Difference]: Finished difference Result 73 states and 100 transitions. [2024-11-09 07:24:18,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 07:24:18,745 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-09 07:24:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:18,746 INFO L225 Difference]: With dead ends: 73 [2024-11-09 07:24:18,746 INFO L226 Difference]: Without dead ends: 57 [2024-11-09 07:24:18,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=766, Invalid=1681, Unknown=3, NotChecked=0, Total=2450 [2024-11-09 07:24:18,748 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 93 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:18,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 74 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:24:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-09 07:24:18,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-11-09 07:24:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 54 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2024-11-09 07:24:18,769 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 25 [2024-11-09 07:24:18,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:18,769 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2024-11-09 07:24:18,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2024-11-09 07:24:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 07:24:18,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:18,771 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1] [2024-11-09 07:24:18,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 07:24:18,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:18,972 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:18,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:18,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2021107728, now seen corresponding path program 3 times [2024-11-09 07:24:18,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:18,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654365072] [2024-11-09 07:24:18,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:18,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:20,767 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:20,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:20,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654365072] [2024-11-09 07:24:20,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654365072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:20,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834549445] [2024-11-09 07:24:20,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:24:20,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:20,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:20,771 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:20,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:24:20,929 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:24:20,929 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:24:20,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 07:24:20,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:21,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:23,114 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:23,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834549445] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:23,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [479327771] [2024-11-09 07:24:23,117 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 07:24:23,117 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:23,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:23,118 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:23,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:23,254 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:23,561 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1477#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~n~0#1_19| Int) (|v_ULTIMATE.start_main_~i~0#1_86| Int)) (and (<= (mod |v_ULTIMATE.start_main_~n~0#1_19| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_86| 18446744073709551616)) (<= 0 |v_ULTIMATE.start_main_~i~0#1_86|))) (exists ((|v_ULTIMATE.start_main_~s~0#1_137| Int)) (<= 18446744065119617026 (mod |v_ULTIMATE.start_main_~s~0#1_137| 18446744073709551616))))' at error location [2024-11-09 07:24:23,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:23,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:23,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2024-11-09 07:24:23,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340081284] [2024-11-09 07:24:23,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:23,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 07:24:23,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:23,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 07:24:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=958, Invalid=1298, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 07:24:23,571 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 44 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:23,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:23,850 INFO L93 Difference]: Finished difference Result 140 states and 204 transitions. [2024-11-09 07:24:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 07:24:23,851 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 44 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-09 07:24:23,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:23,852 INFO L225 Difference]: With dead ends: 140 [2024-11-09 07:24:23,852 INFO L226 Difference]: Without dead ends: 114 [2024-11-09 07:24:23,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=958, Invalid=1298, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 07:24:23,856 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 225 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:23,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 109 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:24:23,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-09 07:24:23,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 95. [2024-11-09 07:24:23,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.4623655913978495) internal successors, (136), 94 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 136 transitions. [2024-11-09 07:24:23,881 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 136 transitions. Word has length 46 [2024-11-09 07:24:23,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:23,885 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 136 transitions. [2024-11-09 07:24:23,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.0454545454545454) internal successors, (90), 44 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:23,885 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 136 transitions. [2024-11-09 07:24:23,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 07:24:23,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:23,887 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1] [2024-11-09 07:24:23,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 07:24:24,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 07:24:24,087 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:24,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:24,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1747897090, now seen corresponding path program 4 times [2024-11-09 07:24:24,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:24,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598693499] [2024-11-09 07:24:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:24,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:25,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:25,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598693499] [2024-11-09 07:24:25,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598693499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:25,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182259528] [2024-11-09 07:24:25,731 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:24:25,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:25,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:25,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:25,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:24:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:25,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 07:24:25,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:26,178 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:28,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182259528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:28,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [142774324] [2024-11-09 07:24:28,474 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:24:28,474 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:28,474 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:28,474 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:28,475 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:28,575 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:35,230 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2139#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~s~0#1_187| Int) (|v_ULTIMATE.start_main_~v~0#1_108| Int)) (<= (+ (mod |v_ULTIMATE.start_main_~s~0#1_187| 18446744073709551616) 1) (mod |v_ULTIMATE.start_main_~v~0#1_108| 4294967296))) (exists ((|v_ULTIMATE.start_main_~i~0#1_113| Int) (|v_ULTIMATE.start_main_~n~0#1_20| Int)) (and (<= 0 |v_ULTIMATE.start_main_~i~0#1_113|) (<= (mod |v_ULTIMATE.start_main_~n~0#1_20| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_113| 18446744073709551616)))))' at error location [2024-11-09 07:24:35,230 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:35,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:35,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-09 07:24:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217140338] [2024-11-09 07:24:35,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:35,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 07:24:35,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:35,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 07:24:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1082, Invalid=1777, Unknown=3, NotChecked=0, Total=2862 [2024-11-09 07:24:35,234 INFO L87 Difference]: Start difference. First operand 95 states and 136 transitions. Second operand has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 49 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:37,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:37,072 INFO L93 Difference]: Finished difference Result 133 states and 184 transitions. [2024-11-09 07:24:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-09 07:24:37,072 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 49 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-09 07:24:37,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:37,073 INFO L225 Difference]: With dead ends: 133 [2024-11-09 07:24:37,073 INFO L226 Difference]: Without dead ends: 105 [2024-11-09 07:24:37,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=3238, Invalid=6265, Unknown=3, NotChecked=0, Total=9506 [2024-11-09 07:24:37,077 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 285 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:37,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 123 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:24:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-09 07:24:37,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2024-11-09 07:24:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.0693069306930694) internal successors, (108), 102 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:37,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2024-11-09 07:24:37,089 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 49 [2024-11-09 07:24:37,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:37,090 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2024-11-09 07:24:37,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 49 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:37,091 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2024-11-09 07:24:37,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 07:24:37,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:37,093 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1] [2024-11-09 07:24:37,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 07:24:37,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 07:24:37,297 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:37,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:37,298 INFO L85 PathProgramCache]: Analyzing trace with hash -399959416, now seen corresponding path program 4 times [2024-11-09 07:24:37,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:37,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913475066] [2024-11-09 07:24:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:37,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:42,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:42,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913475066] [2024-11-09 07:24:42,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913475066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:42,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672466074] [2024-11-09 07:24:42,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:24:42,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:42,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:42,442 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:42,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:24:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:42,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-09 07:24:42,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:43,238 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:48,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672466074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:48,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1568128749] [2024-11-09 07:24:48,900 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 07:24:48,901 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:48,901 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:48,901 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:48,901 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:48,962 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:49,422 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3212#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~s~0#1_281| Int)) (<= 18446744065119617026 (mod |v_ULTIMATE.start_main_~s~0#1_281| 18446744073709551616))) (exists ((|v_ULTIMATE.start_main_~n~0#1_21| Int) (|v_ULTIMATE.start_main_~i~0#1_162| Int)) (and (<= 0 |v_ULTIMATE.start_main_~i~0#1_162|) (<= (mod |v_ULTIMATE.start_main_~n~0#1_21| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_162| 18446744073709551616)))))' at error location [2024-11-09 07:24:49,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:49,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:49,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 92 [2024-11-09 07:24:49,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748446590] [2024-11-09 07:24:49,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:49,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-09 07:24:49,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:49,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-09 07:24:49,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4198, Invalid=4922, Unknown=0, NotChecked=0, Total=9120 [2024-11-09 07:24:49,428 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 92 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:49,944 INFO L93 Difference]: Finished difference Result 284 states and 420 transitions. [2024-11-09 07:24:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-09 07:24:49,945 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 92 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-09 07:24:49,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:49,948 INFO L225 Difference]: With dead ends: 284 [2024-11-09 07:24:49,952 INFO L226 Difference]: Without dead ends: 234 [2024-11-09 07:24:49,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 231 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=4198, Invalid=4922, Unknown=0, NotChecked=0, Total=9120 [2024-11-09 07:24:49,957 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 495 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:49,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 207 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:24:49,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-09 07:24:49,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 191. [2024-11-09 07:24:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 189 states have (on average 1.4814814814814814) internal successors, (280), 190 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 280 transitions. [2024-11-09 07:24:49,991 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 280 transitions. Word has length 94 [2024-11-09 07:24:49,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:49,992 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 280 transitions. [2024-11-09 07:24:49,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.0217391304347827) internal successors, (186), 92 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:24:49,993 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 280 transitions. [2024-11-09 07:24:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 07:24:49,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:49,994 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1] [2024-11-09 07:24:50,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 07:24:50,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 07:24:50,195 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:50,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:50,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1122411914, now seen corresponding path program 5 times [2024-11-09 07:24:50,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:50,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391012459] [2024-11-09 07:24:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:50,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:55,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:55,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391012459] [2024-11-09 07:24:55,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391012459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:55,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40467408] [2024-11-09 07:24:55,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:24:55,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:55,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:55,063 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:55,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:24:55,446 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-09 07:24:55,446 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:24:55,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-09 07:24:55,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:24:56,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:25:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:25:04,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40467408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:25:04,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1975004629] [2024-11-09 07:25:04,931 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:25:04,931 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:25:04,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:25:04,931 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:25:04,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:25:04,992 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:25:11,727 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4546#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~i~0#1_213| Int) (|v_ULTIMATE.start_main_~n~0#1_22| Int)) (and (<= (mod |v_ULTIMATE.start_main_~n~0#1_22| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_213| 18446744073709551616)) (<= 0 |v_ULTIMATE.start_main_~i~0#1_213|))) (exists ((|v_ULTIMATE.start_main_~s~0#1_379| Int) (|v_ULTIMATE.start_main_~v~0#1_207| Int)) (<= (+ (mod |v_ULTIMATE.start_main_~s~0#1_379| 18446744073709551616) 1) (mod |v_ULTIMATE.start_main_~v~0#1_207| 4294967296))))' at error location [2024-11-09 07:25:11,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:25:11,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:25:11,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-09 07:25:11,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893230475] [2024-11-09 07:25:11,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:25:11,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-09 07:25:11,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:11,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-09 07:25:11,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4442, Invalid=5857, Unknown=3, NotChecked=0, Total=10302 [2024-11-09 07:25:11,735 INFO L87 Difference]: Start difference. First operand 191 states and 280 transitions. Second operand has 97 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 97 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:25:20,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:20,434 INFO L93 Difference]: Finished difference Result 253 states and 352 transitions. [2024-11-09 07:25:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-09 07:25:20,435 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 97 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-09 07:25:20,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:20,436 INFO L225 Difference]: With dead ends: 253 [2024-11-09 07:25:20,436 INFO L226 Difference]: Without dead ends: 201 [2024-11-09 07:25:20,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8305 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=13366, Invalid=24073, Unknown=3, NotChecked=0, Total=37442 [2024-11-09 07:25:20,443 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 579 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:20,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 216 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:25:20,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-09 07:25:20,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2024-11-09 07:25:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 197 states have (on average 1.0355329949238579) internal successors, (204), 198 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:25:20,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 204 transitions. [2024-11-09 07:25:20,466 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 204 transitions. Word has length 97 [2024-11-09 07:25:20,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:20,467 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 204 transitions. [2024-11-09 07:25:20,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 97 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:25:20,467 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 204 transitions. [2024-11-09 07:25:20,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-09 07:25:20,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:20,474 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:20,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 07:25:20,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:20,675 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:20,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash 933793656, now seen corresponding path program 5 times [2024-11-09 07:25:20,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:20,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277754962] [2024-11-09 07:25:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:20,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:25:37,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:37,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277754962] [2024-11-09 07:25:37,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277754962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:25:37,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970985543] [2024-11-09 07:25:37,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:25:37,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:37,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:25:37,876 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:25:37,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 07:25:38,959 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2024-11-09 07:25:38,959 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:25:38,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 187 conjuncts are in the unsatisfiable core [2024-11-09 07:25:38,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:25:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:25:40,095 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:26:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:26:00,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970985543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:26:00,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [120811810] [2024-11-09 07:26:00,520 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 07:26:00,520 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:26:00,521 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:26:00,521 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:26:00,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:26:00,577 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:26:01,213 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6699#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~i~0#1_310| Int) (|v_ULTIMATE.start_main_~n~0#1_23| Int)) (and (<= (mod |v_ULTIMATE.start_main_~n~0#1_23| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_310| 18446744073709551616)) (<= 0 |v_ULTIMATE.start_main_~i~0#1_310|))) (exists ((|v_ULTIMATE.start_main_~s~0#1_569| Int)) (<= 18446744065119617026 (mod |v_ULTIMATE.start_main_~s~0#1_569| 18446744073709551616))))' at error location [2024-11-09 07:26:01,214 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:26:01,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:26:01,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 188 [2024-11-09 07:26:01,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254584563] [2024-11-09 07:26:01,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:26:01,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2024-11-09 07:26:01,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:26:01,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2024-11-09 07:26:01,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17590, Invalid=19082, Unknown=0, NotChecked=0, Total=36672 [2024-11-09 07:26:01,229 INFO L87 Difference]: Start difference. First operand 199 states and 204 transitions. Second operand has 188 states, 188 states have (on average 2.0106382978723403) internal successors, (378), 188 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:26:03,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:26:03,514 INFO L93 Difference]: Finished difference Result 572 states and 852 transitions. [2024-11-09 07:26:03,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2024-11-09 07:26:03,515 INFO L78 Accepts]: Start accepts. Automaton has has 188 states, 188 states have (on average 2.0106382978723403) internal successors, (378), 188 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 190 [2024-11-09 07:26:03,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:26:03,518 INFO L225 Difference]: With dead ends: 572 [2024-11-09 07:26:03,518 INFO L226 Difference]: Without dead ends: 474 [2024-11-09 07:26:03,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 471 SyntacticMatches, 3 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=17590, Invalid=19082, Unknown=0, NotChecked=0, Total=36672 [2024-11-09 07:26:03,522 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1022 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:26:03,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 405 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:26:03,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-09 07:26:03,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 383. [2024-11-09 07:26:03,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 381 states have (on average 1.4908136482939633) internal successors, (568), 382 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:26:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 568 transitions. [2024-11-09 07:26:03,563 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 568 transitions. Word has length 190 [2024-11-09 07:26:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:26:03,566 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 568 transitions. [2024-11-09 07:26:03,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 188 states, 188 states have (on average 2.0106382978723403) internal successors, (378), 188 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:26:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 568 transitions. [2024-11-09 07:26:03,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-09 07:26:03,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:26:03,573 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1] [2024-11-09 07:26:03,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 07:26:03,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:26:03,774 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:26:03,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:26:03,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2077242726, now seen corresponding path program 6 times [2024-11-09 07:26:03,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:26:03,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247228066] [2024-11-09 07:26:03,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:26:03,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:26:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:26:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:26:19,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:26:19,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247228066] [2024-11-09 07:26:19,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247228066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:26:19,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104964937] [2024-11-09 07:26:19,767 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:26:19,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:26:19,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:26:19,770 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:26:19,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 07:26:20,146 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:26:20,147 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:26:20,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 191 conjuncts are in the unsatisfiable core [2024-11-09 07:26:20,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:26:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:26:20,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:26:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:26:40,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104964937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:26:40,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [902694655] [2024-11-09 07:26:40,198 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:26:40,199 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:26:40,199 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:26:40,199 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:26:40,199 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:26:40,246 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:26:47,128 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9377#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~i~0#1_409| Int) (|v_ULTIMATE.start_main_~n~0#1_24| Int)) (and (<= (mod |v_ULTIMATE.start_main_~n~0#1_24| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_409| 18446744073709551616)) (<= 0 |v_ULTIMATE.start_main_~i~0#1_409|))) (exists ((|v_ULTIMATE.start_main_~s~0#1_763| Int) (|v_ULTIMATE.start_main_~v~0#1_402| Int)) (<= (+ (mod |v_ULTIMATE.start_main_~s~0#1_763| 18446744073709551616) 1) (mod |v_ULTIMATE.start_main_~v~0#1_402| 4294967296))))' at error location [2024-11-09 07:26:47,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:26:47,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:26:47,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-09 07:26:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615062970] [2024-11-09 07:26:47,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:26:47,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-09 07:26:47,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:26:47,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-09 07:26:47,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18074, Invalid=20929, Unknown=3, NotChecked=0, Total=39006 [2024-11-09 07:26:47,135 INFO L87 Difference]: Start difference. First operand 383 states and 568 transitions. Second operand has 193 states, 193 states have (on average 2.005181347150259) internal successors, (387), 193 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:27:09,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:27:09,313 INFO L93 Difference]: Finished difference Result 493 states and 688 transitions. [2024-11-09 07:27:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2024-11-09 07:27:09,314 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.005181347150259) internal successors, (387), 193 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2024-11-09 07:27:09,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:27:09,315 INFO L225 Difference]: With dead ends: 493 [2024-11-09 07:27:09,316 INFO L226 Difference]: Without dead ends: 393 [2024-11-09 07:27:09,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 384 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32761 ImplicationChecksByTransitivity, 50.5s TimeCoverageRelationStatistics Valid=54358, Invalid=94249, Unknown=3, NotChecked=0, Total=148610 [2024-11-09 07:27:09,324 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1237 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:27:09,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 420 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:27:09,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-09 07:27:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 391. [2024-11-09 07:27:09,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 389 states have (on average 1.0179948586118253) internal successors, (396), 390 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:27:09,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 396 transitions. [2024-11-09 07:27:09,345 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 396 transitions. Word has length 193 [2024-11-09 07:27:09,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:27:09,346 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 396 transitions. [2024-11-09 07:27:09,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.005181347150259) internal successors, (387), 193 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:27:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 396 transitions. [2024-11-09 07:27:09,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-09 07:27:09,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:27:09,353 INFO L215 NwaCegarLoop]: trace histogram [188, 188, 1, 1, 1, 1, 1, 1] [2024-11-09 07:27:09,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 07:27:09,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:27:09,554 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:27:09,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:27:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash 530168152, now seen corresponding path program 6 times [2024-11-09 07:27:09,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:27:09,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968421938] [2024-11-09 07:27:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:27:09,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:27:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:28:36,769 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 0 proven. 35344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:28:36,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:28:36,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968421938] [2024-11-09 07:28:36,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968421938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:28:36,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849242302] [2024-11-09 07:28:36,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:28:36,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:28:36,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:28:36,774 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:28:36,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 07:28:39,484 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:28:39,484 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:28:39,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 379 conjuncts are in the unsatisfiable core [2024-11-09 07:28:39,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:28:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 0 proven. 35344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:28:41,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:30:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 0 proven. 35344 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:30:09,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849242302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:30:09,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [222011831] [2024-11-09 07:30:09,029 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 07:30:09,029 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:30:09,029 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:30:09,029 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:30:09,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:30:09,122 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:30:10,483 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13690#(and (exists ((|v_ULTIMATE.start_main_~i~0#1_602| Int) (|v_ULTIMATE.start_main_~n~0#1_25| Int)) (and (<= 0 |v_ULTIMATE.start_main_~i~0#1_602|) (<= (mod |v_ULTIMATE.start_main_~n~0#1_25| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_602| 18446744073709551616)))) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~s~0#1_1145| Int)) (<= 18446744065119617026 (mod |v_ULTIMATE.start_main_~s~0#1_1145| 18446744073709551616))))' at error location [2024-11-09 07:30:10,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:30:10,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:30:10,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 380 [2024-11-09 07:30:10,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380685867] [2024-11-09 07:30:10,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:30:10,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 380 states [2024-11-09 07:30:10,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:30:10,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 380 interpolants. [2024-11-09 07:30:10,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72022, Invalid=75050, Unknown=0, NotChecked=0, Total=147072 [2024-11-09 07:30:10,501 INFO L87 Difference]: Start difference. First operand 391 states and 396 transitions. Second operand has 380 states, 380 states have (on average 2.0052631578947366) internal successors, (762), 380 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:30:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:30:34,586 INFO L93 Difference]: Finished difference Result 1148 states and 1716 transitions. [2024-11-09 07:30:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 380 states. [2024-11-09 07:30:34,587 INFO L78 Accepts]: Start accepts. Automaton has has 380 states, 380 states have (on average 2.0052631578947366) internal successors, (762), 380 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2024-11-09 07:30:34,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:30:34,592 INFO L225 Difference]: With dead ends: 1148 [2024-11-09 07:30:34,592 INFO L226 Difference]: Without dead ends: 954 [2024-11-09 07:30:34,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1336 GetRequests, 951 SyntacticMatches, 3 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3396 ImplicationChecksByTransitivity, 107.4s TimeCoverageRelationStatistics Valid=72022, Invalid=75050, Unknown=0, NotChecked=0, Total=147072 [2024-11-09 07:30:34,602 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2491 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2491 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:30:34,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2491 Valid, 783 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 07:30:34,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2024-11-09 07:30:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 767. [2024-11-09 07:30:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 765 states have (on average 1.4954248366013072) internal successors, (1144), 766 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:30:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1144 transitions. [2024-11-09 07:30:34,646 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1144 transitions. Word has length 382 [2024-11-09 07:30:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:30:34,647 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1144 transitions. [2024-11-09 07:30:34,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 380 states, 380 states have (on average 2.0052631578947366) internal successors, (762), 380 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:30:34,648 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1144 transitions. [2024-11-09 07:30:34,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-09 07:30:34,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:30:34,662 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 1, 1, 1, 1, 1] [2024-11-09 07:30:34,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 07:30:34,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:30:34,863 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:30:34,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:30:34,863 INFO L85 PathProgramCache]: Analyzing trace with hash -576203590, now seen corresponding path program 7 times [2024-11-09 07:30:34,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:30:34,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152930768] [2024-11-09 07:30:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:30:34,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:30:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:31:59,073 INFO L134 CoverageAnalysis]: Checked inductivity of 36100 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:31:59,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:31:59,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152930768] [2024-11-09 07:31:59,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152930768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:31:59,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468703099] [2024-11-09 07:31:59,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:31:59,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:31:59,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:31:59,075 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:31:59,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 07:32:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:32:00,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 383 conjuncts are in the unsatisfiable core [2024-11-09 07:32:00,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:32:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 36100 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:32:02,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:33:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 36100 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:33:28,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468703099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:33:28,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [958771227] [2024-11-09 07:33:28,509 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:33:28,509 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:33:28,509 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:33:28,509 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:33:28,509 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:33:28,571 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:33:36,174 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19056#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~i~0#1_797| Int) (|v_ULTIMATE.start_main_~n~0#1_26| Int)) (and (<= 0 |v_ULTIMATE.start_main_~i~0#1_797|) (<= (mod |v_ULTIMATE.start_main_~n~0#1_26| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_797| 18446744073709551616)))) (exists ((|v_ULTIMATE.start_main_~s~0#1_1531| Int) (|v_ULTIMATE.start_main_~v~0#1_789| Int)) (<= (+ (mod |v_ULTIMATE.start_main_~s~0#1_1531| 18446744073709551616) 1) (mod |v_ULTIMATE.start_main_~v~0#1_789| 4294967296))))' at error location [2024-11-09 07:33:36,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:33:36,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:33:36,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 385 [2024-11-09 07:33:36,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878908299] [2024-11-09 07:33:36,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:33:36,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2024-11-09 07:33:36,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:33:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2024-11-09 07:33:36,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72986, Invalid=78721, Unknown=3, NotChecked=0, Total=151710 [2024-11-09 07:33:36,209 INFO L87 Difference]: Start difference. First operand 767 states and 1144 transitions. Second operand has 385 states, 385 states have (on average 2.0025974025974027) internal successors, (771), 385 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:20,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:20,241 INFO L93 Difference]: Finished difference Result 973 states and 1360 transitions. [2024-11-09 07:35:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 387 states. [2024-11-09 07:35:20,242 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 2.0025974025974027) internal successors, (771), 385 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2024-11-09 07:35:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:20,246 INFO L225 Difference]: With dead ends: 973 [2024-11-09 07:35:20,246 INFO L226 Difference]: Without dead ends: 777 [2024-11-09 07:35:20,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1726 GetRequests, 958 SyntacticMatches, 0 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130057 ImplicationChecksByTransitivity, 201.3s TimeCoverageRelationStatistics Valid=219286, Invalid=372841, Unknown=3, NotChecked=0, Total=592130 [2024-11-09 07:35:20,279 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2677 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2677 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:20,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2677 Valid, 807 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 07:35:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-09 07:35:20,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 775. [2024-11-09 07:35:20,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 773 states have (on average 1.0090556274256144) internal successors, (780), 774 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 780 transitions. [2024-11-09 07:35:20,322 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 780 transitions. Word has length 385 [2024-11-09 07:35:20,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:20,323 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 780 transitions. [2024-11-09 07:35:20,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 2.0025974025974027) internal successors, (771), 385 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:20,324 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 780 transitions. [2024-11-09 07:35:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2024-11-09 07:35:20,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:20,331 INFO L215 NwaCegarLoop]: trace histogram [380, 380, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:20,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 07:35:20,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d58bdc6e-5508-421c-a2ee-011369462d6d/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 07:35:20,531 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:35:20,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1464143128, now seen corresponding path program 7 times [2024-11-09 07:35:20,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:35:20,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823844960] [2024-11-09 07:35:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:20,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat