./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/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_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98c9a7161a25877cb0d3946df13d012bfde80051390422e2e164abf2e04cd600 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 07:23:48,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:23:48,865 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 07:23:48,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:23:48,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:23:48,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:23:48,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:23:48,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:23:48,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:23:48,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:23:48,910 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 07:23:48,911 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 07:23:48,912 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 07:23:48,912 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 07:23:48,913 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 07:23:48,913 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 07:23:48,914 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 07:23:48,914 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 07:23:48,914 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 07:23:48,915 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 07:23:48,915 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 07:23:48,916 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 07:23:48,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:23:48,917 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 07:23:48,917 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:23:48,918 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:23:48,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:23:48,919 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:23:48,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 07:23:48,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:23:48,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 07:23:48,920 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:23:48,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:23:48,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 07:23:48,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:23:48,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:23:48,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:23:48,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:23:48,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:23:48,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:23:48,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:23:48,924 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 07:23:48,925 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 07:23:48,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:23:48,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:23:48,926 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 07:23:48,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:23:48,927 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_08488a9e-49dd-4828-b9ac-0342dd201dd7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98c9a7161a25877cb0d3946df13d012bfde80051390422e2e164abf2e04cd600 [2024-11-09 07:23:49,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:23:49,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:23:49,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:23:49,232 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:23:49,233 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:23:49,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c Unable to find full path for "g++" [2024-11-09 07:23:51,216 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:23:51,435 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:23:51,436 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c [2024-11-09 07:23:51,445 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/data/173b7388a/c2ff6c9c35b94c64b29666dbaaa2210c/FLAG506e90713 [2024-11-09 07:23:51,460 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/data/173b7388a/c2ff6c9c35b94c64b29666dbaaa2210c [2024-11-09 07:23:51,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:23:51,465 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:23:51,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:23:51,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:23:51,472 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:23:51,473 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5701a8f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51, skipping insertion in model container [2024-11-09 07:23:51,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:23:51,724 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_08488a9e-49dd-4828-b9ac-0342dd201dd7/sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c[866,879] [2024-11-09 07:23:51,733 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_08488a9e-49dd-4828-b9ac-0342dd201dd7/sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c[945,958] [2024-11-09 07:23:51,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:23:51,746 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:23:51,764 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_08488a9e-49dd-4828-b9ac-0342dd201dd7/sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c[866,879] [2024-11-09 07:23:51,765 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_08488a9e-49dd-4828-b9ac-0342dd201dd7/sv-benchmarks/c/loop-invariants/linear-inequality-inv-c.c[945,958] [2024-11-09 07:23:51,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:23:51,793 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:23:51,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51 WrapperNode [2024-11-09 07:23:51,794 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:23:51,795 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:23:51,795 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:23:51,795 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:23:51,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,828 INFO L138 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2024-11-09 07:23:51,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:23:51,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:23:51,830 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:23:51,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:23:51,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,842 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,854 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:23:51,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:23:51,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:23:51,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:23:51,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51" (1/1) ... [2024-11-09 07:23:51,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 07:23:51,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:51,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 07:23:51,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 07:23:51,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:23:51,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:23:51,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:23:51,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 07:23:51,998 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:23:52,000 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:23:52,129 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-09 07:23:52,130 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:23:52,151 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:23:52,151 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 07:23:52,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:23:52 BoogieIcfgContainer [2024-11-09 07:23:52,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:23:52,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:23:52,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:23:52,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:23:52,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:23:51" (1/3) ... [2024-11-09 07:23:52,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1b7c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:23:52, skipping insertion in model container [2024-11-09 07:23:52,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:23:51" (2/3) ... [2024-11-09 07:23:52,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1b7c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:23:52, skipping insertion in model container [2024-11-09 07:23:52,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:23:52" (3/3) ... [2024-11-09 07:23:52,166 INFO L112 eAbstractionObserver]: Analyzing ICFG linear-inequality-inv-c.c [2024-11-09 07:23:52,186 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:23:52,187 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 07:23:52,257 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:23:52,264 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;@2ab52d80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:23:52,265 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 07:23:52,269 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 07:23:52,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 07:23:52,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:52,277 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 07:23:52,277 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:52,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:52,284 INFO L85 PathProgramCache]: Analyzing trace with hash 63025968, now seen corresponding path program 1 times [2024-11-09 07:23:52,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:52,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957858990] [2024-11-09 07:23:52,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:52,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:52,613 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 07:23:52,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:52,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957858990] [2024-11-09 07:23:52,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957858990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:23:52,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:23:52,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:23:52,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671084668] [2024-11-09 07:23:52,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:23:52,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:23:52,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:23:52,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:23:52,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:23:52,654 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 07:23:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:23:52,696 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2024-11-09 07:23:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:23:52,698 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 07:23:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:23:52,706 INFO L225 Difference]: With dead ends: 22 [2024-11-09 07:23:52,707 INFO L226 Difference]: Without dead ends: 12 [2024-11-09 07:23:52,710 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 07:23:52,714 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 07:23:52,715 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 07:23:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-09 07:23:52,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-09 07:23:52,759 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 07:23:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-11-09 07:23:52,761 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2024-11-09 07:23:52,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:23:52,762 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-11-09 07:23:52,763 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 07:23:52,763 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-11-09 07:23:52,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:23:52,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:23:52,764 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:23:52,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:23:52,765 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:23:52,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:23:52,766 INFO L85 PathProgramCache]: Analyzing trace with hash 431765611, now seen corresponding path program 1 times [2024-11-09 07:23:52,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:23:52,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298527491] [2024-11-09 07:23:52,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:52,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:23:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:52,972 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 07:23:52,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:23:52,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298527491] [2024-11-09 07:23:52,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298527491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:23:52,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287682401] [2024-11-09 07:23:52,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:23:52,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:23:52,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:23:52,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:23:52,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:23:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:23:53,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:23:53,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:23:53,115 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 07:23:53,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:23:53,456 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 07:23:53,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287682401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:23:53,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [302767830] [2024-11-09 07:23:53,486 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:23:53,486 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:23:53,490 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:23:53,496 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:23:53,496 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:23:53,790 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:00,385 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '101#(and (<= 1 |#StackHeapBarrier|) (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| 4294967296) 1) (mod |v_ULTIMATE.start_main_~v~0#1_16| 65536))) (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| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_18| 4294967296)) (<= 0 |v_ULTIMATE.start_main_~i~0#1_18|))))' at error location [2024-11-09 07:24:00,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:00,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:00,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 07:24:00,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026353650] [2024-11-09 07:24:00,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:00,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:24:00,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:00,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:24:00,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=97, Unknown=3, NotChecked=0, Total=132 [2024-11-09 07:24:00,389 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 07:24:00,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:00,528 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2024-11-09 07:24:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:24:00,529 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 07:24:00,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:00,530 INFO L225 Difference]: With dead ends: 24 [2024-11-09 07:24:00,530 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 07:24:00,531 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 07:24:00,532 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 07:24:00,533 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 07:24:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 07:24:00,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2024-11-09 07:24:00,537 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 07:24:00,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2024-11-09 07:24:00,538 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 7 [2024-11-09 07:24:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:00,538 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2024-11-09 07:24:00,538 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 07:24:00,539 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2024-11-09 07:24:00,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:24:00,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:00,539 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:24:00,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:24:00,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:00,743 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:00,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:00,745 INFO L85 PathProgramCache]: Analyzing trace with hash 499836113, now seen corresponding path program 1 times [2024-11-09 07:24:00,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:00,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106786815] [2024-11-09 07:24:00,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:00,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:00,954 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 07:24:00,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:00,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106786815] [2024-11-09 07:24:00,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106786815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:00,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835984318] [2024-11-09 07:24:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:00,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:00,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:00,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:00,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:24:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:01,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 07:24:01,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:01,047 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 07:24:01,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:01,107 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 07:24:01,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835984318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [237241862] [2024-11-09 07:24:01,110 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 07:24:01,110 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:01,111 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:01,111 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:01,111 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:01,274 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:01,438 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '211#(and (<= 1 |#StackHeapBarrier|) (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| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_24| 4294967296)))) (exists ((|v_ULTIMATE.start_main_~s~0#1_29| Int)) (<= 4294836226 (mod |v_ULTIMATE.start_main_~s~0#1_29| 4294967296))))' at error location [2024-11-09 07:24:01,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:01,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:01,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-09 07:24:01,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336865413] [2024-11-09 07:24:01,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:01,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:24:01,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:01,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:24:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:24:01,441 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 07:24:01,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:01,482 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-11-09 07:24:01,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:24:01,482 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 07:24:01,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:01,483 INFO L225 Difference]: With dead ends: 26 [2024-11-09 07:24:01,483 INFO L226 Difference]: Without dead ends: 18 [2024-11-09 07:24:01,484 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 07:24:01,485 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 07:24:01,485 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 07:24:01,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-09 07:24:01,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-09 07:24:01,494 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 07:24:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-09 07:24:01,495 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2024-11-09 07:24:01,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:01,497 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-09 07:24:01,498 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 07:24:01,498 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-09 07:24:01,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 07:24:01,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:01,499 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2024-11-09 07:24:01,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:24:01,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:01,700 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:01,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:01,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2045523868, now seen corresponding path program 2 times [2024-11-09 07:24:01,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:01,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699873152] [2024-11-09 07:24:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:01,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:02,046 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 07:24:02,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:02,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699873152] [2024-11-09 07:24:02,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699873152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:02,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228095619] [2024-11-09 07:24:02,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:24:02,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:02,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:02,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:02,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:24:02,110 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-09 07:24:02,111 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:24:02,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:24:02,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:02,198 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 07:24:02,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:02,467 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 07:24:02,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228095619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:02,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1094954802] [2024-11-09 07:24:02,470 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:24:02,472 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:02,472 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:02,472 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:02,473 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:02,607 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:09,184 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '354#(and (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| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_33| 4294967296)))) (<= 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| 4294967296) 1) (mod |v_ULTIMATE.start_main_~v~0#1_30| 65536))))' at error location [2024-11-09 07:24:09,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:09,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:09,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 07:24:09,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889645210] [2024-11-09 07:24:09,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:09,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 07:24:09,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:09,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 07:24:09,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=229, Unknown=3, NotChecked=0, Total=306 [2024-11-09 07:24:09,188 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 07:24:09,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:09,521 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2024-11-09 07:24:09,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 07:24:09,522 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 07:24:09,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:09,523 INFO L225 Difference]: With dead ends: 44 [2024-11-09 07:24:09,523 INFO L226 Difference]: Without dead ends: 33 [2024-11-09 07:24:09,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=178, Invalid=469, Unknown=3, NotChecked=0, Total=650 [2024-11-09 07:24:09,524 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 07:24:09,525 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 07:24:09,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-09 07:24:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-11-09 07:24:09,536 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 07:24:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-09 07:24:09,538 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 13 [2024-11-09 07:24:09,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:09,539 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-09 07:24:09,539 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 07:24:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-09 07:24:09,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 07:24:09,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:09,543 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1] [2024-11-09 07:24:09,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:24:09,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:09,747 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:09,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1979678508, now seen corresponding path program 2 times [2024-11-09 07:24:09,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:09,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168969463] [2024-11-09 07:24:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:09,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:10,204 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 07:24:10,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:10,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168969463] [2024-11-09 07:24:10,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168969463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:10,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465570732] [2024-11-09 07:24:10,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:24:10,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:10,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:10,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:10,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:24:10,304 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-09 07:24:10,304 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:24:10,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 07:24:10,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:10,445 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 07:24:10,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:10,912 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 07:24:10,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465570732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1973637023] [2024-11-09 07:24:10,915 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 07:24:10,915 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:10,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:10,916 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:10,916 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:11,011 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:11,201 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| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_46| 4294967296)))) (exists ((|v_ULTIMATE.start_main_~s~0#1_65| Int)) (<= 4294836226 (mod |v_ULTIMATE.start_main_~s~0#1_65| 4294967296))))' at error location [2024-11-09 07:24:11,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:11,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:11,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2024-11-09 07:24:11,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870635763] [2024-11-09 07:24:11,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:11,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 07:24:11,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:11,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 07:24:11,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=350, Unknown=0, NotChecked=0, Total=552 [2024-11-09 07:24:11,204 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 07:24:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:11,320 INFO L93 Difference]: Finished difference Result 68 states and 96 transitions. [2024-11-09 07:24:11,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 07:24:11,321 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 07:24:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:11,323 INFO L225 Difference]: With dead ends: 68 [2024-11-09 07:24:11,323 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 07:24:11,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=350, Unknown=0, NotChecked=0, Total=552 [2024-11-09 07:24:11,325 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 07:24:11,325 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 07:24:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 07:24:11,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2024-11-09 07:24:11,336 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 07:24:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2024-11-09 07:24:11,338 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 22 [2024-11-09 07:24:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:11,338 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2024-11-09 07:24:11,339 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 07:24:11,339 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2024-11-09 07:24:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 07:24:11,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:11,340 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1] [2024-11-09 07:24:11,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:24:11,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:11,543 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:11,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:11,544 INFO L85 PathProgramCache]: Analyzing trace with hash -332395586, now seen corresponding path program 3 times [2024-11-09 07:24:11,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:11,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849367788] [2024-11-09 07:24:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:11,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:12,125 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 07:24:12,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:12,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849367788] [2024-11-09 07:24:12,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849367788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:12,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829393653] [2024-11-09 07:24:12,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:24:12,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:12,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:12,128 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:12,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:24:12,198 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:24:12,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:24:12,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 07:24:12,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:12,365 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 07:24:12,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:13,034 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 07:24:13,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829393653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:13,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [3482535] [2024-11-09 07:24:13,037 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:24:13,037 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:13,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:13,038 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:13,038 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:13,132 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:19,680 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '944#(and (<= 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| 4294967296) 1) (mod |v_ULTIMATE.start_main_~v~0#1_57| 65536))) (exists ((|v_ULTIMATE.start_main_~n~0#1_18| Int) (|v_ULTIMATE.start_main_~i~0#1_61| Int)) (and (<= (mod |v_ULTIMATE.start_main_~n~0#1_18| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_61| 4294967296)) (<= 0 |v_ULTIMATE.start_main_~i~0#1_61|))))' at error location [2024-11-09 07:24:19,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:19,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:19,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-09 07:24:19,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013183314] [2024-11-09 07:24:19,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:19,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 07:24:19,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:19,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 07:24:19,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=601, Unknown=3, NotChecked=0, Total=870 [2024-11-09 07:24:19,685 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 07:24:20,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:20,456 INFO L93 Difference]: Finished difference Result 73 states and 100 transitions. [2024-11-09 07:24:20,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 07:24:20,457 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 07:24:20,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:20,458 INFO L225 Difference]: With dead ends: 73 [2024-11-09 07:24:20,458 INFO L226 Difference]: Without dead ends: 57 [2024-11-09 07:24:20,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=766, Invalid=1681, Unknown=3, NotChecked=0, Total=2450 [2024-11-09 07:24:20,460 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 07:24:20,461 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 07:24:20,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-09 07:24:20,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-11-09 07:24:20,468 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 07:24:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2024-11-09 07:24:20,469 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 25 [2024-11-09 07:24:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:20,470 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2024-11-09 07:24:20,470 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 07:24:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2024-11-09 07:24:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 07:24:20,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:20,471 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1] [2024-11-09 07:24:20,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 07:24:20,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 07:24:20,676 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:20,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:20,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2021107728, now seen corresponding path program 3 times [2024-11-09 07:24:20,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:20,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094440983] [2024-11-09 07:24:20,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:20,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:22,315 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 07:24:22,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:22,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094440983] [2024-11-09 07:24:22,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094440983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:22,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324766836] [2024-11-09 07:24:22,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:24:22,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:22,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:22,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:22,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:24:22,469 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:24:22,469 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:24:22,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 07:24:22,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:22,765 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 07:24:22,766 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:24,247 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 07:24:24,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324766836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:24,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1552232086] [2024-11-09 07:24:24,249 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 07:24:24,249 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:24,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:24,250 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:24,250 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:24,339 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:24,600 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| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_86| 4294967296)) (<= 0 |v_ULTIMATE.start_main_~i~0#1_86|))) (exists ((|v_ULTIMATE.start_main_~s~0#1_137| Int)) (<= 4294836226 (mod |v_ULTIMATE.start_main_~s~0#1_137| 4294967296))))' at error location [2024-11-09 07:24:24,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:24,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:24,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2024-11-09 07:24:24,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811857657] [2024-11-09 07:24:24,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:24,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 07:24:24,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:24,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 07:24:24,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=958, Invalid=1298, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 07:24:24,605 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 07:24:24,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:24,811 INFO L93 Difference]: Finished difference Result 140 states and 204 transitions. [2024-11-09 07:24:24,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 07:24:24,811 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 07:24:24,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:24,813 INFO L225 Difference]: With dead ends: 140 [2024-11-09 07:24:24,813 INFO L226 Difference]: Without dead ends: 114 [2024-11-09 07:24:24,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=958, Invalid=1298, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 07:24:24,815 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 225 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:24:24,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 109 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:24:24,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-09 07:24:24,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 95. [2024-11-09 07:24:24,846 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 07:24:24,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 136 transitions. [2024-11-09 07:24:24,847 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 136 transitions. Word has length 46 [2024-11-09 07:24:24,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:24,847 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 136 transitions. [2024-11-09 07:24:24,848 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 07:24:24,848 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 136 transitions. [2024-11-09 07:24:24,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 07:24:24,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:24,849 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1] [2024-11-09 07:24:24,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 07:24:25,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:25,050 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:25,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:25,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1747897090, now seen corresponding path program 4 times [2024-11-09 07:24:25,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:25,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484306024] [2024-11-09 07:24:25,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:25,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:26,459 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 07:24:26,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:26,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484306024] [2024-11-09 07:24:26,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484306024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:26,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821960566] [2024-11-09 07:24:26,460 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:24:26,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:26,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:26,461 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:26,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:24:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:26,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 07:24:26,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:26,814 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 07:24:26,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:28,333 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 07:24:28,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821960566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:28,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [980400490] [2024-11-09 07:24:28,336 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:24:28,336 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:28,336 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:28,337 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:28,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:28,427 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:35,147 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2139#(and (<= 1 |#StackHeapBarrier|) (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| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_113| 4294967296)))) (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| 4294967296) 1) (mod |v_ULTIMATE.start_main_~v~0#1_108| 65536))))' at error location [2024-11-09 07:24:35,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:35,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:35,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-09 07:24:35,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518063792] [2024-11-09 07:24:35,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:35,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 07:24:35,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:35,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 07:24:35,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1082, Invalid=1777, Unknown=3, NotChecked=0, Total=2862 [2024-11-09 07:24:35,151 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 07:24:36,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:36,945 INFO L93 Difference]: Finished difference Result 133 states and 184 transitions. [2024-11-09 07:24:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-09 07:24:36,946 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 07:24:36,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:36,947 INFO L225 Difference]: With dead ends: 133 [2024-11-09 07:24:36,947 INFO L226 Difference]: Without dead ends: 105 [2024-11-09 07:24:36,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=3238, Invalid=6265, Unknown=3, NotChecked=0, Total=9506 [2024-11-09 07:24:36,952 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 07:24:36,952 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 07:24:36,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-09 07:24:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2024-11-09 07:24:36,963 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 07:24:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2024-11-09 07:24:36,964 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 49 [2024-11-09 07:24:36,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:36,964 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2024-11-09 07:24:36,965 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 07:24:36,965 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2024-11-09 07:24:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-09 07:24:36,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:36,967 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1] [2024-11-09 07:24:36,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 07:24:37,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:37,171 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:37,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:37,172 INFO L85 PathProgramCache]: Analyzing trace with hash -399959416, now seen corresponding path program 4 times [2024-11-09 07:24:37,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:37,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937551126] [2024-11-09 07:24:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:37,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:41,943 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 07:24:41,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:41,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937551126] [2024-11-09 07:24:41,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937551126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:41,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430286565] [2024-11-09 07:24:41,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:24:41,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:41,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:41,946 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:41,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:24:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:42,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-09 07:24:42,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:42,553 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 07:24:42,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:47,890 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 07:24:47,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430286565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:47,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2076065035] [2024-11-09 07:24:47,893 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 07:24:47,893 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:47,893 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:47,894 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:47,894 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:47,981 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:24:48,348 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)) (<= 4294836226 (mod |v_ULTIMATE.start_main_~s~0#1_281| 4294967296))) (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| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_162| 4294967296)))))' at error location [2024-11-09 07:24:48,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:24:48,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:24:48,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 92 [2024-11-09 07:24:48,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199976947] [2024-11-09 07:24:48,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:24:48,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-09 07:24:48,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:24:48,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-09 07:24:48,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4198, Invalid=4922, Unknown=0, NotChecked=0, Total=9120 [2024-11-09 07:24:48,358 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 07:24:48,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:24:48,851 INFO L93 Difference]: Finished difference Result 284 states and 420 transitions. [2024-11-09 07:24:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-09 07:24:48,851 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 07:24:48,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:24:48,853 INFO L225 Difference]: With dead ends: 284 [2024-11-09 07:24:48,853 INFO L226 Difference]: Without dead ends: 234 [2024-11-09 07:24:48,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 231 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=4198, Invalid=4922, Unknown=0, NotChecked=0, Total=9120 [2024-11-09 07:24:48,857 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 495 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 07:24:48,857 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 07:24:48,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-09 07:24:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 191. [2024-11-09 07:24:48,877 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 07:24:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 280 transitions. [2024-11-09 07:24:48,878 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 280 transitions. Word has length 94 [2024-11-09 07:24:48,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:24:48,879 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 280 transitions. [2024-11-09 07:24:48,879 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 07:24:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 280 transitions. [2024-11-09 07:24:48,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 07:24:48,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:24:48,882 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1] [2024-11-09 07:24:48,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 07:24:49,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:49,083 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:24:49,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:24:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1122411914, now seen corresponding path program 5 times [2024-11-09 07:24:49,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:24:49,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741046763] [2024-11-09 07:24:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:24:49,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:24:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:24:53,531 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 07:24:53,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:24:53,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741046763] [2024-11-09 07:24:53,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741046763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:24:53,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852590691] [2024-11-09 07:24:53,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:24:53,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:24:53,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:24:53,533 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:24:53,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:24:53,804 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2024-11-09 07:24:53,804 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:24:53,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-09 07:24:53,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:24:54,323 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 07:24:54,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:24:59,680 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 07:24:59,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852590691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:24:59,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1348742773] [2024-11-09 07:24:59,682 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:24:59,682 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:24:59,682 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:24:59,683 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:24:59,683 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:24:59,753 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:25:06,517 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 (<= 0 |v_ULTIMATE.start_main_~i~0#1_213|) (<= (mod |v_ULTIMATE.start_main_~n~0#1_22| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_213| 4294967296)))) (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| 4294967296) 1) (mod |v_ULTIMATE.start_main_~v~0#1_207| 65536))))' at error location [2024-11-09 07:25:06,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:25:06,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:25:06,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-09 07:25:06,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44629324] [2024-11-09 07:25:06,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:25:06,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-09 07:25:06,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-09 07:25:06,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4442, Invalid=5857, Unknown=3, NotChecked=0, Total=10302 [2024-11-09 07:25:06,524 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 07:25:12,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:12,365 INFO L93 Difference]: Finished difference Result 253 states and 352 transitions. [2024-11-09 07:25:12,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-09 07:25:12,366 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 07:25:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:12,367 INFO L225 Difference]: With dead ends: 253 [2024-11-09 07:25:12,367 INFO L226 Difference]: Without dead ends: 201 [2024-11-09 07:25:12,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8305 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=13366, Invalid=24073, Unknown=3, NotChecked=0, Total=37442 [2024-11-09 07:25:12,372 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 579 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:12,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 216 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:25:12,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-09 07:25:12,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2024-11-09 07:25:12,390 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 07:25:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 204 transitions. [2024-11-09 07:25:12,391 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 204 transitions. Word has length 97 [2024-11-09 07:25:12,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:12,391 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 204 transitions. [2024-11-09 07:25:12,391 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 07:25:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 204 transitions. [2024-11-09 07:25:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-09 07:25:12,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:12,395 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 1, 1, 1, 1, 1, 1] [2024-11-09 07:25:12,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 07:25:12,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 07:25:12,596 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:12,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash 933793656, now seen corresponding path program 5 times [2024-11-09 07:25:12,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:12,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931212443] [2024-11-09 07:25:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:12,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:25:27,928 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 07:25:27,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:25:27,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931212443] [2024-11-09 07:25:27,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931212443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:25:27,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143079792] [2024-11-09 07:25:27,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:25:27,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:27,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:25:27,930 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:25:27,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 07:25:28,840 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2024-11-09 07:25:28,840 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:25:28,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 187 conjuncts are in the unsatisfiable core [2024-11-09 07:25:28,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:25:29,623 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 07:25:29,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:25:47,612 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 07:25:47,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143079792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:25:47,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [847008138] [2024-11-09 07:25:47,614 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 07:25:47,614 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:25:47,614 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:25:47,614 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:25:47,614 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:25:47,680 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:25:48,275 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6699#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~s~0#1_569| Int)) (<= 4294836226 (mod |v_ULTIMATE.start_main_~s~0#1_569| 4294967296))) (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| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_310| 4294967296)) (<= 0 |v_ULTIMATE.start_main_~i~0#1_310|))))' at error location [2024-11-09 07:25:48,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:25:48,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:25:48,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 188 [2024-11-09 07:25:48,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586111024] [2024-11-09 07:25:48,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:25:48,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2024-11-09 07:25:48,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:25:48,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2024-11-09 07:25:48,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17590, Invalid=19082, Unknown=0, NotChecked=0, Total=36672 [2024-11-09 07:25:48,293 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 07:25:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:25:50,474 INFO L93 Difference]: Finished difference Result 572 states and 852 transitions. [2024-11-09 07:25:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2024-11-09 07:25:50,475 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 07:25:50,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:25:50,477 INFO L225 Difference]: With dead ends: 572 [2024-11-09 07:25:50,478 INFO L226 Difference]: Without dead ends: 474 [2024-11-09 07:25:50,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 471 SyntacticMatches, 3 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=17590, Invalid=19082, Unknown=0, NotChecked=0, Total=36672 [2024-11-09 07:25:50,481 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1022 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:25:50,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 405 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:25:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-09 07:25:50,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 383. [2024-11-09 07:25:50,506 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 07:25:50,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 568 transitions. [2024-11-09 07:25:50,508 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 568 transitions. Word has length 190 [2024-11-09 07:25:50,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:25:50,509 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 568 transitions. [2024-11-09 07:25:50,509 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 07:25:50,510 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 568 transitions. [2024-11-09 07:25:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-09 07:25:50,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:25:50,512 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1] [2024-11-09 07:25:50,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 07:25:50,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:25:50,713 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:25:50,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:25:50,714 INFO L85 PathProgramCache]: Analyzing trace with hash -2077242726, now seen corresponding path program 6 times [2024-11-09 07:25:50,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:25:50,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683407934] [2024-11-09 07:25:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:25:50,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:25:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:26:05,206 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 07:26:05,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:26:05,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683407934] [2024-11-09 07:26:05,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683407934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:26:05,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294456358] [2024-11-09 07:26:05,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:26:05,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:26:05,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:26:05,208 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:26:05,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 07:26:05,512 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:26:05,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:26:05,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 191 conjuncts are in the unsatisfiable core [2024-11-09 07:26:05,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:26:06,439 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 07:26:06,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:26:25,650 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 07:26:25,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294456358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:26:25,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1359538389] [2024-11-09 07:26:25,653 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:26:25,653 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:26:25,653 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:26:25,653 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:26:25,654 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:26:25,706 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:26:32,667 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| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_409| 4294967296)) (<= 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)) (<= (+ 1 (mod |v_ULTIMATE.start_main_~s~0#1_763| 4294967296)) (mod |v_ULTIMATE.start_main_~v~0#1_402| 65536))))' at error location [2024-11-09 07:26:32,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:26:32,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:26:32,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-09 07:26:32,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218457396] [2024-11-09 07:26:32,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:26:32,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-09 07:26:32,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:26:32,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-09 07:26:32,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18074, Invalid=20929, Unknown=3, NotChecked=0, Total=39006 [2024-11-09 07:26:32,683 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 07:26:54,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:26:54,418 INFO L93 Difference]: Finished difference Result 493 states and 688 transitions. [2024-11-09 07:26:54,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2024-11-09 07:26:54,419 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 07:26:54,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:26:54,421 INFO L225 Difference]: With dead ends: 493 [2024-11-09 07:26:54,421 INFO L226 Difference]: Without dead ends: 393 [2024-11-09 07:26:54,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 384 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32761 ImplicationChecksByTransitivity, 49.9s TimeCoverageRelationStatistics Valid=54358, Invalid=94249, Unknown=3, NotChecked=0, Total=148610 [2024-11-09 07:26:54,432 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 07:26:54,432 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 07:26:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-09 07:26:54,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 391. [2024-11-09 07:26:54,457 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 07:26:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 396 transitions. [2024-11-09 07:26:54,460 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 396 transitions. Word has length 193 [2024-11-09 07:26:54,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:26:54,462 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 396 transitions. [2024-11-09 07:26:54,462 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 07:26:54,463 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 396 transitions. [2024-11-09 07:26:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-09 07:26:54,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:26:54,476 INFO L215 NwaCegarLoop]: trace histogram [188, 188, 1, 1, 1, 1, 1, 1] [2024-11-09 07:26:54,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 07:26:54,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:26:54,677 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:26:54,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:26:54,677 INFO L85 PathProgramCache]: Analyzing trace with hash 530168152, now seen corresponding path program 6 times [2024-11-09 07:26:54,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:26:54,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86262200] [2024-11-09 07:26:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:26:54,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:26:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:28:05,057 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 07:28:05,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:28:05,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86262200] [2024-11-09 07:28:05,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86262200] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:28:05,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179028470] [2024-11-09 07:28:05,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:28:05,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:28:05,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:28:05,062 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:28:05,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 07:28:07,122 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:28:07,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:28:07,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 379 conjuncts are in the unsatisfiable core [2024-11-09 07:28:07,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:28:08,654 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 07:28:08,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:29:23,507 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 07:29:23,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179028470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:29:23,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [245800550] [2024-11-09 07:29:23,508 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2024-11-09 07:29:23,508 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:29:23,509 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:29:23,509 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:29:23,509 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:29:23,589 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:29:24,705 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13690#(and (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_~s~0#1_1145| Int)) (<= 4294836226 (mod |v_ULTIMATE.start_main_~s~0#1_1145| 4294967296))) (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| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_602| 4294967296)))))' at error location [2024-11-09 07:29:24,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:29:24,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:29:24,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 380 [2024-11-09 07:29:24,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025620791] [2024-11-09 07:29:24,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:29:24,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 380 states [2024-11-09 07:29:24,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:29:24,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 380 interpolants. [2024-11-09 07:29:24,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72022, Invalid=75050, Unknown=0, NotChecked=0, Total=147072 [2024-11-09 07:29:24,727 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 07:29:47,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:29:47,403 INFO L93 Difference]: Finished difference Result 1148 states and 1716 transitions. [2024-11-09 07:29:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 380 states. [2024-11-09 07:29:47,404 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 07:29:47,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:29:47,407 INFO L225 Difference]: With dead ends: 1148 [2024-11-09 07:29:47,408 INFO L226 Difference]: Without dead ends: 954 [2024-11-09 07:29:47,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1336 GetRequests, 951 SyntacticMatches, 3 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3396 ImplicationChecksByTransitivity, 92.6s TimeCoverageRelationStatistics Valid=72022, Invalid=75050, Unknown=0, NotChecked=0, Total=147072 [2024-11-09 07:29:47,414 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2491 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:29:47,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2491 Valid, 783 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 07:29:47,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2024-11-09 07:29:47,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 767. [2024-11-09 07:29:47,451 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 07:29:47,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1144 transitions. [2024-11-09 07:29:47,455 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1144 transitions. Word has length 382 [2024-11-09 07:29:47,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:29:47,455 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1144 transitions. [2024-11-09 07:29:47,456 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 07:29:47,456 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1144 transitions. [2024-11-09 07:29:47,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-11-09 07:29:47,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:29:47,464 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 1, 1, 1, 1, 1] [2024-11-09 07:29:47,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 07:29:47,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:29:47,665 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:29:47,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:29:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash -576203590, now seen corresponding path program 7 times [2024-11-09 07:29:47,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:29:47,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652055380] [2024-11-09 07:29:47,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:29:47,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:29:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:31:01,881 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 07:31:01,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 07:31:01,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652055380] [2024-11-09 07:31:01,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652055380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:31:01,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811102321] [2024-11-09 07:31:01,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:31:01,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:31:01,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 07:31:01,884 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:31:01,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 07:31:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:31:03,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 383 conjuncts are in the unsatisfiable core [2024-11-09 07:31:03,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:31:05,216 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 07:31:05,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:32:19,011 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 07:32:19,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811102321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:32:19,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [212647696] [2024-11-09 07:32:19,013 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2024-11-09 07:32:19,013 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 07:32:19,014 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 07:32:19,015 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 07:32:19,015 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 07:32:19,086 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 07:32:26,433 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| 65536) (mod |v_ULTIMATE.start_main_~i~0#1_797| 4294967296)))) (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| 4294967296) 1) (mod |v_ULTIMATE.start_main_~v~0#1_789| 65536))))' at error location [2024-11-09 07:32:26,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 07:32:26,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:32:26,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 385 [2024-11-09 07:32:26,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325269330] [2024-11-09 07:32:26,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:32:26,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2024-11-09 07:32:26,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 07:32:26,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2024-11-09 07:32:26,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72986, Invalid=78721, Unknown=3, NotChecked=0, Total=151710 [2024-11-09 07:32:26,465 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 07:34:04,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:04,960 INFO L93 Difference]: Finished difference Result 973 states and 1360 transitions. [2024-11-09 07:34:04,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 387 states. [2024-11-09 07:34:04,961 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 07:34:04,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:04,965 INFO L225 Difference]: With dead ends: 973 [2024-11-09 07:34:04,965 INFO L226 Difference]: Without dead ends: 777 [2024-11-09 07:34:05,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1726 GetRequests, 958 SyntacticMatches, 0 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130057 ImplicationChecksByTransitivity, 179.0s TimeCoverageRelationStatistics Valid=219286, Invalid=372841, Unknown=3, NotChecked=0, Total=592130 [2024-11-09 07:34:05,005 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2677 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:05,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2677 Valid, 807 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 07:34:05,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-09 07:34:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 775. [2024-11-09 07:34:05,041 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 07:34:05,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 780 transitions. [2024-11-09 07:34:05,043 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 780 transitions. Word has length 385 [2024-11-09 07:34:05,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:05,044 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 780 transitions. [2024-11-09 07:34:05,045 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 07:34:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 780 transitions. [2024-11-09 07:34:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2024-11-09 07:34:05,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:05,052 INFO L215 NwaCegarLoop]: trace histogram [380, 380, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:05,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 07:34:05,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08488a9e-49dd-4828-b9ac-0342dd201dd7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 07:34:05,253 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 07:34:05,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:05,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1464143128, now seen corresponding path program 7 times [2024-11-09 07:34:05,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 07:34:05,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667966626] [2024-11-09 07:34:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:05,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat