./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/sum02-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/sum02-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh --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 80bce81184682208d15520c2d0ae5d9c5f1236c4de557bfddd91c6f88a04aad8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:00:18,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:00:18,438 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:00:18,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:00:18,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:00:18,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:00:18,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:00:18,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:00:18,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:00:18,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:00:18,473 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:00:18,474 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:00:18,474 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:00:18,475 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:00:18,475 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:00:18,476 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:00:18,476 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:00:18,477 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:00:18,478 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:00:18,478 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:00:18,479 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:00:18,480 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:00:18,481 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:00:18,481 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:00:18,482 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:00:18,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:00:18,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:00:18,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:00:18,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:00:18,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:00:18,484 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:00:18,485 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:00:18,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:00:18,485 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:00:18,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:00:18,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:00:18,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:00:18,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:00:18,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:00:18,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:00:18,487 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:00:18,488 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:00:18,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:00:18,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:00:18,488 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:00:18,488 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:00:18,488 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:00:18,489 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_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80bce81184682208d15520c2d0ae5d9c5f1236c4de557bfddd91c6f88a04aad8 [2023-12-02 13:00:18,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:00:18,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:00:18,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:00:18,777 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:00:18,778 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:00:18,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/bitvector/sum02-2.c [2023-12-02 13:00:21,634 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:00:21,828 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:00:21,829 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/sv-benchmarks/c/bitvector/sum02-2.c [2023-12-02 13:00:21,838 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/data/5c3371c3d/6bace311f47d4ee49398621a518c9782/FLAG433e9a66f [2023-12-02 13:00:21,854 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/data/5c3371c3d/6bace311f47d4ee49398621a518c9782 [2023-12-02 13:00:21,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:00:21,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:00:21,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:00:21,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:00:21,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:00:21,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:00:21" (1/1) ... [2023-12-02 13:00:21,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404863ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:21, skipping insertion in model container [2023-12-02 13:00:21,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:00:21" (1/1) ... [2023-12-02 13:00:21,912 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:00:22,083 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/sv-benchmarks/c/bitvector/sum02-2.c[711,724] [2023-12-02 13:00:22,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:00:22,108 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:00:22,119 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/sv-benchmarks/c/bitvector/sum02-2.c[711,724] [2023-12-02 13:00:22,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:00:22,136 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:00:22,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22 WrapperNode [2023-12-02 13:00:22,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:00:22,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:00:22,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:00:22,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:00:22,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22" (1/1) ... [2023-12-02 13:00:22,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22" (1/1) ... [2023-12-02 13:00:22,166 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 36 [2023-12-02 13:00:22,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:00:22,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:00:22,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:00:22,167 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:00:22,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22" (1/1) ... [2023-12-02 13:00:22,175 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22" (1/1) ... [2023-12-02 13:00:22,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22" (1/1) ... [2023-12-02 13:00:22,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22" (1/1) ... [2023-12-02 13:00:22,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22" (1/1) ... [2023-12-02 13:00:22,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22" (1/1) ... [2023-12-02 13:00:22,184 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22" (1/1) ... [2023-12-02 13:00:22,185 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22" (1/1) ... [2023-12-02 13:00:22,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:00:22,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:00:22,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:00:22,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:00:22,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22" (1/1) ... [2023-12-02 13:00:22,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:00:22,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:22,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:00:22,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:00:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:00:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:00:22,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:00:22,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:00:22,320 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:00:22,322 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:00:22,430 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:00:22,491 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:00:22,491 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:00:22,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:00:22 BoogieIcfgContainer [2023-12-02 13:00:22,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:00:22,496 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:00:22,496 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:00:22,499 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:00:22,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:00:21" (1/3) ... [2023-12-02 13:00:22,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af9dade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:00:22, skipping insertion in model container [2023-12-02 13:00:22,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:00:22" (2/3) ... [2023-12-02 13:00:22,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af9dade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:00:22, skipping insertion in model container [2023-12-02 13:00:22,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:00:22" (3/3) ... [2023-12-02 13:00:22,502 INFO L112 eAbstractionObserver]: Analyzing ICFG sum02-2.c [2023-12-02 13:00:22,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:00:22,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:00:22,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:00:22,576 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@44f28284, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:00:22,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:00:22,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:22,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 13:00:22,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:22,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 13:00:22,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:00:22,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2279365, now seen corresponding path program 1 times [2023-12-02 13:00:22,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:22,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457078598] [2023-12-02 13:00:22,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:22,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:22,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:22,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928262783] [2023-12-02 13:00:22,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:22,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:22,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:22,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:22,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:00:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:22,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:00:22,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:22,806 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:00:22,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:22,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457078598] [2023-12-02 13:00:22,806 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:22,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928262783] [2023-12-02 13:00:22,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928262783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:00:22,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:00:22,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:00:22,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068403747] [2023-12-02 13:00:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:00:22,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:00:22,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:22,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:00:22,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:00:22,847 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:22,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:22,879 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2023-12-02 13:00:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:00:22,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2023-12-02 13:00:22,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:22,888 INFO L225 Difference]: With dead ends: 13 [2023-12-02 13:00:22,889 INFO L226 Difference]: Without dead ends: 6 [2023-12-02 13:00:22,891 INFO L412 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 [2023-12-02 13:00:22,895 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:22,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:00:22,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2023-12-02 13:00:22,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-12-02 13:00:22,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2023-12-02 13:00:22,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2023-12-02 13:00:22,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:22,924 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2023-12-02 13:00:22,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2023-12-02 13:00:22,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 13:00:22,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:22,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 13:00:22,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:00:23,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 13:00:23,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:00:23,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:23,129 INFO L85 PathProgramCache]: Analyzing trace with hash 70500755, now seen corresponding path program 1 times [2023-12-02 13:00:23,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:23,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944772069] [2023-12-02 13:00:23,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:23,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:23,150 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:23,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377157765] [2023-12-02 13:00:23,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:23,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:23,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:23,153 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:23,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:00:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:00:23,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:00:23,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:23,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:23,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:23,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944772069] [2023-12-02 13:00:23,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:23,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377157765] [2023-12-02 13:00:23,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377157765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:23,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1106704397] [2023-12-02 13:00:23,474 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2023-12-02 13:00:23,474 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:00:23,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:00:23,483 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:00:23,483 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:00:23,675 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:00:25,229 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '77#(and (<= 1 |#StackHeapBarrier|) (= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) |ULTIMATE.start_main_~nl~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~gauss~0#1| (div (mod (+ (* |ULTIMATE.start_main_~nl~0#1| |ULTIMATE.start_main_~nl~0#1|) |ULTIMATE.start_main_~nl~0#1|) 18446744073709551616) 2)) (<= (+ (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 1) (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (<= 0 |ULTIMATE.start_main_~i~0#1|) (not (= (mod |ULTIMATE.start_main_~gauss~0#1| 18446744073709551616) (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (not (= 0 (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616))))' at error location [2023-12-02 13:00:25,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:00:25,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:00:25,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-02 13:00:25,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877879167] [2023-12-02 13:00:25,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:00:25,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:00:25,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:25,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:00:25,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:00:25,231 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:25,278 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2023-12-02 13:00:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:00:25,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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 [2023-12-02 13:00:25,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:25,279 INFO L225 Difference]: With dead ends: 10 [2023-12-02 13:00:25,279 INFO L226 Difference]: Without dead ends: 7 [2023-12-02 13:00:25,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-02 13:00:25,282 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:25,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:00:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-12-02 13:00:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-12-02 13:00:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:25,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-12-02 13:00:25,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-12-02 13:00:25,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:25,286 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-12-02 13:00:25,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-12-02 13:00:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 13:00:25,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:25,287 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-12-02 13:00:25,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:00:25,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 13:00:25,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:00:25,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:25,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2109603451, now seen corresponding path program 2 times [2023-12-02 13:00:25,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:25,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629785066] [2023-12-02 13:00:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:25,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:25,509 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:25,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436538000] [2023-12-02 13:00:25,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:00:25,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:25,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:25,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:25,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:00:25,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 13:00:25,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:00:25,604 WARN L260 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 13:00:25,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:25,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:00:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:34,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:00:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629785066] [2023-12-02 13:00:34,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:00:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436538000] [2023-12-02 13:00:34,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436538000] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:00:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1316609840] [2023-12-02 13:00:34,092 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2023-12-02 13:00:34,092 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:00:34,092 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:00:34,092 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:00:34,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:00:34,522 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:00:43,853 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '145#(and (<= 1 |#StackHeapBarrier|) (= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) |ULTIMATE.start_main_~nl~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~gauss~0#1| (div (mod (+ (* |ULTIMATE.start_main_~nl~0#1| |ULTIMATE.start_main_~nl~0#1|) |ULTIMATE.start_main_~nl~0#1|) 18446744073709551616) 2)) (<= (+ (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 1) (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (<= 0 |ULTIMATE.start_main_~i~0#1|) (not (= (mod |ULTIMATE.start_main_~gauss~0#1| 18446744073709551616) (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (not (= 0 (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616))))' at error location [2023-12-02 13:00:43,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:00:43,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:00:43,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-02 13:00:43,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268965283] [2023-12-02 13:00:43,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:00:43,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 13:00:43,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:00:43,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 13:00:43,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=117, Unknown=1, NotChecked=0, Total=156 [2023-12-02 13:00:43,855 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:52,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-02 13:00:54,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-02 13:00:59,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:00:59,110 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2023-12-02 13:00:59,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 13:00:59,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 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 6 [2023-12-02 13:00:59,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:00:59,111 INFO L225 Difference]: With dead ends: 16 [2023-12-02 13:00:59,112 INFO L226 Difference]: Without dead ends: 11 [2023-12-02 13:00:59,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=81, Invalid=223, Unknown=2, NotChecked=0, Total=306 [2023-12-02 13:00:59,114 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 11 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:00:59,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 7 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2023-12-02 13:00:59,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-02 13:00:59,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-02 13:00:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 13:00:59,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2023-12-02 13:00:59,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:00:59,123 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 13:00:59,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:00:59,123 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 13:00:59,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 13:00:59,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:00:59,123 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1] [2023-12-02 13:00:59,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 13:00:59,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:59,324 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:00:59,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:00:59,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2115623675, now seen corresponding path program 3 times [2023-12-02 13:00:59,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:00:59,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529219781] [2023-12-02 13:00:59,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:00:59,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:00:59,343 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:00:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568664665] [2023-12-02 13:00:59,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 13:00:59,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:00:59,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:00:59,345 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:00:59,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:00:59,456 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 13:00:59,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:00:59,457 WARN L260 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-02 13:00:59,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:00:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:00:59,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:01:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:01:23,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:01:23,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529219781] [2023-12-02 13:01:23,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:01:23,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568664665] [2023-12-02 13:01:23,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568664665] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:01:23,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1529164912] [2023-12-02 13:01:23,602 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2023-12-02 13:01:23,603 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:01:23,603 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:01:23,603 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:01:23,603 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:01:24,024 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:01:35,053 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '271#(and (<= 1 |#StackHeapBarrier|) (= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) |ULTIMATE.start_main_~nl~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~gauss~0#1| (div (mod (+ (* |ULTIMATE.start_main_~nl~0#1| |ULTIMATE.start_main_~nl~0#1|) |ULTIMATE.start_main_~nl~0#1|) 18446744073709551616) 2)) (<= (+ (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 1) (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (<= 0 |ULTIMATE.start_main_~i~0#1|) (not (= (mod |ULTIMATE.start_main_~gauss~0#1| 18446744073709551616) (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (not (= 0 (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616))))' at error location [2023-12-02 13:01:35,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:01:35,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:01:35,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-02 13:01:35,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999377873] [2023-12-02 13:01:35,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:01:35,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 13:01:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:01:35,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 13:01:35,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=317, Unknown=1, NotChecked=0, Total=420 [2023-12-02 13:01:35,055 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 18 states, 18 states have (on average 1.0555555555555556) 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) [2023-12-02 13:01:37,160 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse8 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse0 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse10 (mod (+ 5 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse4 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse1 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse9 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse5 (+ .cse0 1)) (.cse3 (mod (div (mod (+ (* .cse0 .cse0) .cse0) 18446744073709551616) 2) 18446744073709551616)) (.cse6 (< .cse0 .cse8)) (.cse7 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (let ((.cse2 (mod (+ .cse1 .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse9) 18446744073709551616))) (or (< .cse0 .cse1) (= .cse2 0) (= .cse2 .cse3) (< .cse4 .cse5) .cse6)) (let ((.cse11 (mod (+ .cse1 .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse4 .cse9) 18446744073709551616))) (or (< .cse0 .cse4) (< .cse10 .cse5) (= .cse11 .cse3) .cse6 (= .cse11 0))) (let ((.cse12 (mod (+ .cse10 .cse1 .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse4 .cse9) 18446744073709551616))) (or (= 0 .cse12) (forall ((v_z_12 Int)) (or (= (mod (div (mod (+ (* v_z_12 v_z_12) v_z_12) 18446744073709551616) 2) 18446744073709551616) .cse12) (< v_z_12 .cse8) (< (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) (+ v_z_12 1)) (< v_z_12 .cse10))))) (let ((.cse13 (mod (+ .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse9) 18446744073709551616))) (or (< .cse0 .cse9) (= .cse13 0) (< .cse1 .cse5) (= .cse3 .cse13) .cse6)) (let ((.cse14 (mod (+ .cse8 |c_ULTIMATE.start_main_~sn~0#1|) 18446744073709551616))) (or (= .cse3 .cse14) (< .cse7 .cse5) .cse6 (= .cse14 0))) (let ((.cse15 (mod |c_ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) (or (= .cse15 0) (= .cse15 .cse3) (< .cse8 .cse5))) (let ((.cse16 (mod (+ .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1|) 18446744073709551616))) (or (< .cse9 .cse5) (< .cse0 .cse7) (= .cse16 0) (= .cse3 .cse16) .cse6))))) is different from false [2023-12-02 13:01:44,813 WARN L293 SmtUtils]: Spent 6.97s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:01:46,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-02 13:01:56,143 WARN L293 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:01:58,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-02 13:02:00,190 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse8 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse0 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse4 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse1 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse9 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse5 (+ .cse0 1)) (.cse3 (mod (div (mod (+ (* .cse0 .cse0) .cse0) 18446744073709551616) 2) 18446744073709551616)) (.cse6 (< .cse0 .cse8)) (.cse7 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (let ((.cse2 (mod (+ .cse1 .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse9) 18446744073709551616))) (or (< .cse0 .cse1) (= .cse2 0) (= .cse2 .cse3) (< .cse4 .cse5) .cse6)) (let ((.cse10 (mod (+ .cse1 .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse4 .cse9) 18446744073709551616))) (or (< .cse0 .cse4) (< (mod (+ 5 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) .cse5) (= .cse10 .cse3) .cse6 (= .cse10 0))) (let ((.cse11 (mod (+ .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1| .cse9) 18446744073709551616))) (or (< .cse0 .cse9) (= .cse11 0) (< .cse1 .cse5) (= .cse3 .cse11) .cse6)) (let ((.cse12 (mod (+ .cse8 |c_ULTIMATE.start_main_~sn~0#1|) 18446744073709551616))) (or (= .cse3 .cse12) (< .cse7 .cse5) .cse6 (= .cse12 0))) (let ((.cse13 (mod |c_ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) (or (= .cse13 0) (= .cse13 .cse3) (< .cse8 .cse5))) (let ((.cse14 (mod (+ .cse7 .cse8 |c_ULTIMATE.start_main_~sn~0#1|) 18446744073709551616))) (or (< .cse9 .cse5) (< .cse0 .cse7) (= .cse14 0) (= .cse3 .cse14) .cse6))))) is different from false [2023-12-02 13:02:02,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:02:18,187 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse3 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (mod (div (mod (+ (* .cse3 .cse3) .cse3) 18446744073709551616) 2) 18446744073709551616)) (.cse4 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse2 (+ .cse3 1))) (and (let ((.cse1 (mod (+ .cse4 |c_ULTIMATE.start_main_~sn~0#1|) 18446744073709551616))) (or (= .cse0 .cse1) (< (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) .cse2) (< .cse3 .cse4) (= .cse1 0))) (let ((.cse5 (mod |c_ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) (or (= .cse5 0) (= .cse5 .cse0) (< .cse4 .cse2)))))) is different from true [2023-12-02 13:02:31,363 WARN L293 SmtUtils]: Spent 8.55s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:02:31,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:02:31,368 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2023-12-02 13:02:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 13:02:31,369 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.0555555555555556) 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) Word has length 10 [2023-12-02 13:02:31,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:02:31,369 INFO L225 Difference]: With dead ends: 24 [2023-12-02 13:02:31,369 INFO L226 Difference]: Without dead ends: 19 [2023-12-02 13:02:31,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 74.7s TimeCoverageRelationStatistics Valid=202, Invalid=504, Unknown=8, NotChecked=156, Total=870 [2023-12-02 13:02:31,371 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 35 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 22 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:02:31,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 11 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 84 Invalid, 2 Unknown, 59 Unchecked, 7.9s Time] [2023-12-02 13:02:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-02 13:02:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-02 13:02:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 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) [2023-12-02 13:02:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2023-12-02 13:02:31,388 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2023-12-02 13:02:31,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:02:31,388 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2023-12-02 13:02:31,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.0555555555555556) 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) [2023-12-02 13:02:31,388 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2023-12-02 13:02:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 13:02:31,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:02:31,389 INFO L195 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1] [2023-12-02 13:02:31,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:02:31,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-02 13:02:31,589 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:02:31,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:02:31,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1663751163, now seen corresponding path program 4 times [2023-12-02 13:02:31,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:02:31,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156234264] [2023-12-02 13:02:31,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:02:31,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:02:31,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 13:02:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27171008] [2023-12-02 13:02:31,621 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 13:02:31,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:02:31,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:02:31,622 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:02:31,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8529fa-249b-4f13-9591-77ccfeca6f9f/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 13:02:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:02:32,038 WARN L260 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 85 conjunts are in the unsatisfiable core [2023-12-02 13:02:32,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:02:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:02:32,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:04:02,180 WARN L293 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:04:30,271 WARN L293 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 59 DAG size of output: 58 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:05:02,689 WARN L293 SmtUtils]: Spent 8.95s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:05:47,911 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 96 refuted. 9 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:47,911 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:05:47,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156234264] [2023-12-02 13:05:47,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 13:05:47,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27171008] [2023-12-02 13:05:47,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27171008] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:47,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [867415435] [2023-12-02 13:05:47,914 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2023-12-02 13:05:47,914 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:05:47,914 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:05:47,914 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:05:47,914 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:05:48,245 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:06:00,687 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '501#(and (<= 1 |#StackHeapBarrier|) (= (mod |ULTIMATE.start_main_~n~0#1| 4294967296) |ULTIMATE.start_main_~nl~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~gauss~0#1| (div (mod (+ (* |ULTIMATE.start_main_~nl~0#1| |ULTIMATE.start_main_~nl~0#1|) |ULTIMATE.start_main_~nl~0#1|) 18446744073709551616) 2)) (<= (+ (mod |ULTIMATE.start_main_~n~0#1| 4294967296) 1) (mod |ULTIMATE.start_main_~i~0#1| 4294967296)) (<= 0 |ULTIMATE.start_main_~i~0#1|) (not (= (mod |ULTIMATE.start_main_~gauss~0#1| 18446744073709551616) (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (not (= 0 (mod |ULTIMATE.start_main_~sn~0#1| 18446744073709551616))))' at error location [2023-12-02 13:06:00,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:06:00,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:06:00,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2023-12-02 13:06:00,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140044533] [2023-12-02 13:06:00,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 13:06:00,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 13:06:00,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:06:00,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 13:06:00,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=986, Unknown=20, NotChecked=0, Total=1332 [2023-12-02 13:06:00,690 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 34 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:06:03,010 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse11 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse10 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse5 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse28 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 13) 4294967296)) (.cse8 (mod (+ 7 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse12 (mod (+ 8 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse13 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 10) 4294967296)) (.cse0 (mod (+ 12 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse14 (mod (+ 9 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse6 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 11) 4294967296)) (.cse16 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse7 (mod (+ 5 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse9 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse15 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse17 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse1 (+ .cse5 1)) (.cse26 (< .cse5 .cse10)) (.cse3 (mod (div (mod (+ (* .cse5 .cse5) .cse5) 18446744073709551616) 2) 18446744073709551616)) (.cse4 (< .cse5 .cse11))) (and (let ((.cse2 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 |c_ULTIMATE.start_main_~sn~0#1| .cse13 .cse14 .cse15 .cse16 .cse6 .cse17) 18446744073709551616))) (or (< .cse0 .cse1) (= .cse2 .cse3) (= .cse2 0) .cse4 (< .cse5 .cse6))) (let ((.cse18 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 |c_ULTIMATE.start_main_~sn~0#1| .cse14 .cse15 .cse16 .cse17) 18446744073709551616))) (or (< .cse13 .cse1) (< .cse5 .cse14) (= .cse18 .cse3) .cse4 (= .cse18 0))) (let ((.cse19 (mod (+ .cse9 .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1| .cse17) 18446744073709551616))) (or (< .cse5 .cse9) (= .cse19 0) (= .cse19 .cse3) (< .cse15 .cse1) .cse4)) (let ((.cse20 (mod (+ .cse7 .cse9 .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1| .cse15 .cse16 .cse17) 18446744073709551616))) (or (= .cse20 .cse3) (< .cse8 .cse1) (= .cse20 0) (< .cse5 .cse16) .cse4)) (let ((.cse21 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1| .cse15 .cse16 .cse17) 18446744073709551616))) (or (< .cse5 .cse8) (= .cse21 0) (= .cse21 .cse3) .cse4 (< .cse12 .cse1))) (let ((.cse22 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 |c_ULTIMATE.start_main_~sn~0#1| .cse15 .cse16 .cse17) 18446744073709551616))) (or (= .cse22 .cse3) (< .cse5 .cse12) (< .cse14 .cse1) (= .cse22 0) .cse4)) (let ((.cse23 (mod (+ .cse9 .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1| .cse15 .cse17) 18446744073709551616))) (or (< .cse5 .cse15) (< .cse7 .cse1) (= .cse23 .cse3) .cse4 (= .cse23 0))) (let ((.cse24 (mod (+ .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1| .cse17) 18446744073709551616))) (or (< .cse5 .cse17) (= .cse24 0) (< .cse9 .cse1) (= .cse3 .cse24) .cse4)) (let ((.cse25 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 |c_ULTIMATE.start_main_~sn~0#1| .cse13 .cse14 .cse15 .cse16 .cse17) 18446744073709551616))) (or (= .cse25 0) .cse26 (< .cse5 .cse13) (< .cse6 .cse1) (= .cse25 .cse3) .cse4)) (let ((.cse27 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 .cse28 .cse12 |c_ULTIMATE.start_main_~sn~0#1| .cse13 .cse0 .cse14 .cse15 .cse16 .cse6 .cse17) 18446744073709551616))) (or (= .cse27 0) (forall ((v_z_16 Int)) (or (= .cse27 (mod (div (mod (+ v_z_16 (* v_z_16 v_z_16)) 18446744073709551616) 2) 18446744073709551616)) (< v_z_16 .cse28) (< v_z_16 .cse17) (< (mod (+ 14 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) (+ v_z_16 1)) (< v_z_16 .cse11))))) (let ((.cse29 (mod (+ .cse11 |c_ULTIMATE.start_main_~sn~0#1|) 18446744073709551616))) (or (= .cse3 .cse29) (< .cse10 .cse1) .cse4 (= .cse29 0))) (let ((.cse30 (mod |c_ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) (or (= .cse30 0) (= .cse30 .cse3) (< .cse11 .cse1))) (let ((.cse31 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 |c_ULTIMATE.start_main_~sn~0#1| .cse13 .cse0 .cse14 .cse15 .cse16 .cse6 .cse17) 18446744073709551616))) (or .cse26 (= .cse31 0) (< .cse5 .cse0) (< .cse28 .cse1) (= .cse31 .cse3) .cse4)) (let ((.cse32 (mod (+ .cse7 .cse9 .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1| .cse15 .cse17) 18446744073709551616))) (or (< .cse5 .cse7) (= 0 .cse32) (= .cse3 .cse32) (< .cse16 .cse1) .cse4)) (let ((.cse33 (mod (+ .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1|) 18446744073709551616))) (or (< .cse17 .cse1) .cse26 (= .cse33 0) (= .cse3 .cse33) .cse4))))) is different from false [2023-12-02 13:06:05,017 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse11 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse10 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse5 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse28 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 13) 4294967296)) (.cse8 (mod (+ 7 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse12 (mod (+ 8 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse13 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 10) 4294967296)) (.cse0 (mod (+ 12 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse14 (mod (+ 9 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse6 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 11) 4294967296)) (.cse16 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse7 (mod (+ 5 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse9 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse15 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296)) (.cse17 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse1 (+ .cse5 1)) (.cse26 (< .cse5 .cse10)) (.cse3 (mod (div (mod (+ (* .cse5 .cse5) .cse5) 18446744073709551616) 2) 18446744073709551616)) (.cse4 (< .cse5 .cse11))) (and (let ((.cse2 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 |c_ULTIMATE.start_main_~sn~0#1| .cse13 .cse14 .cse15 .cse16 .cse6 .cse17) 18446744073709551616))) (or (< .cse0 .cse1) (= .cse2 .cse3) (= .cse2 0) .cse4 (< .cse5 .cse6))) (let ((.cse18 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 |c_ULTIMATE.start_main_~sn~0#1| .cse14 .cse15 .cse16 .cse17) 18446744073709551616))) (or (< .cse13 .cse1) (< .cse5 .cse14) (= .cse18 .cse3) .cse4 (= .cse18 0))) (let ((.cse19 (mod (+ .cse9 .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1| .cse17) 18446744073709551616))) (or (< .cse5 .cse9) (= .cse19 0) (= .cse19 .cse3) (< .cse15 .cse1) .cse4)) (let ((.cse20 (mod (+ .cse7 .cse9 .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1| .cse15 .cse16 .cse17) 18446744073709551616))) (or (= .cse20 .cse3) (< .cse8 .cse1) (= .cse20 0) (< .cse5 .cse16) .cse4)) (let ((.cse21 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1| .cse15 .cse16 .cse17) 18446744073709551616))) (or (< .cse5 .cse8) (= .cse21 0) (= .cse21 .cse3) .cse4 (< .cse12 .cse1))) (let ((.cse22 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 |c_ULTIMATE.start_main_~sn~0#1| .cse15 .cse16 .cse17) 18446744073709551616))) (or (= .cse22 .cse3) (< .cse5 .cse12) (< .cse14 .cse1) (= .cse22 0) .cse4)) (let ((.cse23 (mod (+ .cse9 .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1| .cse15 .cse17) 18446744073709551616))) (or (< .cse5 .cse15) (< .cse7 .cse1) (= .cse23 .cse3) .cse4 (= .cse23 0))) (let ((.cse24 (mod (+ .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1| .cse17) 18446744073709551616))) (or (< .cse5 .cse17) (= .cse24 0) (< .cse9 .cse1) (= .cse3 .cse24) .cse4)) (let ((.cse25 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 |c_ULTIMATE.start_main_~sn~0#1| .cse13 .cse14 .cse15 .cse16 .cse17) 18446744073709551616))) (or (= .cse25 0) .cse26 (< .cse5 .cse13) (< .cse6 .cse1) (= .cse25 .cse3) .cse4)) (let ((.cse27 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 .cse28 .cse12 |c_ULTIMATE.start_main_~sn~0#1| .cse13 .cse0 .cse14 .cse15 .cse16 .cse6 .cse17) 18446744073709551616))) (or (= .cse27 0) (forall ((v_z_16 Int)) (or (= .cse27 (mod (div (mod (+ v_z_16 (* v_z_16 v_z_16)) 18446744073709551616) 2) 18446744073709551616)) (< v_z_16 .cse28) (< v_z_16 .cse17) (< (mod (+ 14 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) (+ v_z_16 1)) (< v_z_16 .cse11))))) (let ((.cse29 (mod (+ .cse11 |c_ULTIMATE.start_main_~sn~0#1|) 18446744073709551616))) (or (= .cse3 .cse29) (< .cse10 .cse1) .cse4 (= .cse29 0))) (let ((.cse30 (mod |c_ULTIMATE.start_main_~sn~0#1| 18446744073709551616))) (or (= .cse30 0) (= .cse30 .cse3) (< .cse11 .cse1))) (let ((.cse31 (mod (+ .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 |c_ULTIMATE.start_main_~sn~0#1| .cse13 .cse0 .cse14 .cse15 .cse16 .cse6 .cse17) 18446744073709551616))) (or .cse26 (= .cse31 0) (< .cse5 .cse0) (< .cse28 .cse1) (= .cse31 .cse3) .cse4)) (let ((.cse32 (mod (+ .cse7 .cse9 .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1| .cse15 .cse17) 18446744073709551616))) (or (< .cse5 .cse7) (= 0 .cse32) (= .cse3 .cse32) (< .cse16 .cse1) .cse4)) (let ((.cse33 (mod (+ .cse10 .cse11 |c_ULTIMATE.start_main_~sn~0#1|) 18446744073709551616))) (or (< .cse17 .cse1) .cse26 (= .cse33 0) (= .cse3 .cse33) .cse4))))) is different from true [2023-12-02 13:09:51,098 WARN L293 SmtUtils]: Spent 3.73m on a formula simplification. DAG size of input: 150 DAG size of output: 150 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:09:53,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 13:09:55,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-02 13:13:19,734 WARN L293 SmtUtils]: Spent 3.26m on a formula simplification. DAG size of input: 140 DAG size of output: 140 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:13:21,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1]