./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench/dijkstra.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/dijkstra.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c2c25cf461f08df93633b3a41b472f1ef6c33d9d6e519054ad0fbe6ddfed0fc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:03:18,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:03:18,435 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-25 00:03:18,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:03:18,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:03:18,466 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:03:18,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:03:18,468 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:03:18,469 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:03:18,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:03:18,470 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:03:18,471 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:03:18,472 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:03:18,472 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:03:18,473 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:03:18,474 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:03:18,474 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:03:18,475 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:03:18,475 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:03:18,476 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:03:18,477 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:03:18,477 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:03:18,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:03:18,479 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:03:18,479 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:03:18,480 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:03:18,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:03:18,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:03:18,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:03:18,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:03:18,482 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:03:18,483 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-25 00:03:18,484 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:03:18,484 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:03:18,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:03:18,485 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:03:18,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:03:18,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:03:18,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:03:18,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:03:18,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:03:18,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:03:18,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:03:18,490 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:03:18,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:03:18,491 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:03:18,491 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:03:18,491 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:03:18,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:03:18,492 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_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c2c25cf461f08df93633b3a41b472f1ef6c33d9d6e519054ad0fbe6ddfed0fc [2023-11-25 00:03:18,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:03:18,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:03:18,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:03:18,929 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:03:18,929 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:03:18,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench/dijkstra.c [2023-11-25 00:03:21,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:03:22,319 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:03:22,320 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/sv-benchmarks/c/nla-digbench/dijkstra.c [2023-11-25 00:03:22,332 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/data/baa9cdd5b/39ad1d4e409642289147c49ece10fe93/FLAG4224d7ea6 [2023-11-25 00:03:22,351 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/data/baa9cdd5b/39ad1d4e409642289147c49ece10fe93 [2023-11-25 00:03:22,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:03:22,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:03:22,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:03:22,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:03:22,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:03:22,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc9947d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22, skipping insertion in model container [2023-11-25 00:03:22,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,397 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:03:22,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:03:22,643 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:03:22,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:03:22,715 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:03:22,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22 WrapperNode [2023-11-25 00:03:22,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:03:22,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:03:22,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:03:22,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:03:22,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,739 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,815 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 316 [2023-11-25 00:03:22,816 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:03:22,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:03:22,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:03:22,817 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:03:22,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,876 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:03:22,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:03:22,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:03:22,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:03:22,888 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22" (1/1) ... [2023-11-25 00:03:22,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:03:22,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:22,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:03:22,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:03:22,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:03:22,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:03:22,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:03:22,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:03:22,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:03:22,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:03:23,086 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:03:23,090 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:03:33,142 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:03:33,184 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:03:33,184 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-25 00:03:33,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:03:33 BoogieIcfgContainer [2023-11-25 00:03:33,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:03:33,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:03:33,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:03:33,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:03:33,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:03:22" (1/3) ... [2023-11-25 00:03:33,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b94889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:03:33, skipping insertion in model container [2023-11-25 00:03:33,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:03:22" (2/3) ... [2023-11-25 00:03:33,197 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b94889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:03:33, skipping insertion in model container [2023-11-25 00:03:33,197 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:03:33" (3/3) ... [2023-11-25 00:03:33,199 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra.c [2023-11-25 00:03:33,224 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:03:33,224 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 258 error locations. [2023-11-25 00:03:33,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:03:33,312 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;@327782fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:03:33,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 258 error locations. [2023-11-25 00:03:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 535 states, 266 states have (on average 1.9887218045112782) internal successors, (529), 524 states have internal predecessors, (529), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-25 00:03:33,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:03:33,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:33,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:03:33,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr188ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 255 more)] === [2023-11-25 00:03:33,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:33,385 INFO L85 PathProgramCache]: Analyzing trace with hash 19492914, now seen corresponding path program 1 times [2023-11-25 00:03:33,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:33,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007350627] [2023-11-25 00:03:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:33,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:03:33,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:33,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007350627] [2023-11-25 00:03:33,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007350627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:33,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:33,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:03:33,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696839041] [2023-11-25 00:03:33,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:33,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:03:33,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:33,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:03:33,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:03:33,615 INFO L87 Difference]: Start difference. First operand has 535 states, 266 states have (on average 1.9887218045112782) internal successors, (529), 524 states have internal predecessors, (529), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 2.0) 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) [2023-11-25 00:03:33,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:33,725 INFO L93 Difference]: Finished difference Result 1051 states and 1085 transitions. [2023-11-25 00:03:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:03:33,728 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) 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 [2023-11-25 00:03:33,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:33,752 INFO L225 Difference]: With dead ends: 1051 [2023-11-25 00:03:33,753 INFO L226 Difference]: Without dead ends: 520 [2023-11-25 00:03:33,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:03:33,771 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:33,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 530 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:03:33,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-11-25 00:03:33,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 520. [2023-11-25 00:03:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 265 states have (on average 1.9358490566037736) internal successors, (513), 510 states have internal predecessors, (513), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:03:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 529 transitions. [2023-11-25 00:03:33,903 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 529 transitions. Word has length 4 [2023-11-25 00:03:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:33,904 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 529 transitions. [2023-11-25 00:03:33,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) 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) [2023-11-25 00:03:33,905 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 529 transitions. [2023-11-25 00:03:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:03:33,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:33,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:03:33,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:03:33,907 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 255 more)] === [2023-11-25 00:03:33,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:33,909 INFO L85 PathProgramCache]: Analyzing trace with hash 18898578, now seen corresponding path program 1 times [2023-11-25 00:03:33,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:33,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933139498] [2023-11-25 00:03:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:33,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:03:34,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:34,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933139498] [2023-11-25 00:03:34,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933139498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:34,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:34,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-25 00:03:34,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295282007] [2023-11-25 00:03:34,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:34,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:03:34,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:34,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:03:34,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:34,023 INFO L87 Difference]: Start difference. First operand 520 states and 529 transitions. Second operand has 3 states, 2 states have (on average 2.0) 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) [2023-11-25 00:03:36,833 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 [] [2023-11-25 00:03:38,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:38,640 INFO L93 Difference]: Finished difference Result 1385 states and 1415 transitions. [2023-11-25 00:03:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:03:38,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) 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 [2023-11-25 00:03:38,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:38,649 INFO L225 Difference]: With dead ends: 1385 [2023-11-25 00:03:38,649 INFO L226 Difference]: Without dead ends: 870 [2023-11-25 00:03:38,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:38,653 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 478 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:38,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 466 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 451 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-11-25 00:03:38,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2023-11-25 00:03:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 708. [2023-11-25 00:03:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 447 states have (on average 1.919463087248322) internal successors, (858), 692 states have internal predecessors, (858), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-25 00:03:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 886 transitions. [2023-11-25 00:03:38,720 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 886 transitions. Word has length 4 [2023-11-25 00:03:38,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:38,720 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 886 transitions. [2023-11-25 00:03:38,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) 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) [2023-11-25 00:03:38,721 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 886 transitions. [2023-11-25 00:03:38,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-25 00:03:38,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:38,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-25 00:03:38,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:03:38,723 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 255 more)] === [2023-11-25 00:03:38,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:38,723 INFO L85 PathProgramCache]: Analyzing trace with hash 585854462, now seen corresponding path program 1 times [2023-11-25 00:03:38,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:38,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065657986] [2023-11-25 00:03:38,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:38,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:03:38,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:38,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065657986] [2023-11-25 00:03:38,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065657986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:38,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:38,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-25 00:03:38,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232136030] [2023-11-25 00:03:38,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:38,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:03:38,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:38,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:03:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:38,823 INFO L87 Difference]: Start difference. First operand 708 states and 886 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2023-11-25 00:03:40,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:40,399 INFO L93 Difference]: Finished difference Result 1215 states and 1402 transitions. [2023-11-25 00:03:40,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:03:40,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2023-11-25 00:03:40,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:40,415 INFO L225 Difference]: With dead ends: 1215 [2023-11-25 00:03:40,418 INFO L226 Difference]: Without dead ends: 1154 [2023-11-25 00:03:40,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:40,421 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 441 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:40,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 572 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-25 00:03:40,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2023-11-25 00:03:40,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 967. [2023-11-25 00:03:40,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 698 states have (on average 1.7822349570200573) internal successors, (1244), 943 states have internal predecessors, (1244), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-25 00:03:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1288 transitions. [2023-11-25 00:03:40,466 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1288 transitions. Word has length 5 [2023-11-25 00:03:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:40,466 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1288 transitions. [2023-11-25 00:03:40,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2023-11-25 00:03:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1288 transitions. [2023-11-25 00:03:40,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:03:40,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:40,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:03:40,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:03:40,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 255 more)] === [2023-11-25 00:03:40,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:40,469 INFO L85 PathProgramCache]: Analyzing trace with hash 365424288, now seen corresponding path program 1 times [2023-11-25 00:03:40,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:40,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108268854] [2023-11-25 00:03:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:40,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:03:40,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:40,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108268854] [2023-11-25 00:03:40,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108268854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:40,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:03:40,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-25 00:03:40,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080958529] [2023-11-25 00:03:40,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:40,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:03:40,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:40,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:03:40,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:40,557 INFO L87 Difference]: Start difference. First operand 967 states and 1288 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-11-25 00:03:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:03:41,806 INFO L93 Difference]: Finished difference Result 1209 states and 1411 transitions. [2023-11-25 00:03:41,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:03:41,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) Word has length 7 [2023-11-25 00:03:41,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:03:41,814 INFO L225 Difference]: With dead ends: 1209 [2023-11-25 00:03:41,814 INFO L226 Difference]: Without dead ends: 1207 [2023-11-25 00:03:41,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:03:41,821 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 414 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:03:41,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 397 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-25 00:03:41,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2023-11-25 00:03:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 967. [2023-11-25 00:03:41,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 698 states have (on average 1.7793696275071633) internal successors, (1242), 943 states have internal predecessors, (1242), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-25 00:03:41,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1286 transitions. [2023-11-25 00:03:41,864 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1286 transitions. Word has length 7 [2023-11-25 00:03:41,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:03:41,864 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1286 transitions. [2023-11-25 00:03:41,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-11-25 00:03:41,865 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1286 transitions. [2023-11-25 00:03:41,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-25 00:03:41,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:03:41,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-25 00:03:41,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-25 00:03:41,866 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 255 more)] === [2023-11-25 00:03:41,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:03:41,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1511907381, now seen corresponding path program 1 times [2023-11-25 00:03:41,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:03:41,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529215748] [2023-11-25 00:03:41,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:41,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:03:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:03:41,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:03:41,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529215748] [2023-11-25 00:03:41,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529215748] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:03:41,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270425058] [2023-11-25 00:03:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:03:41,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:03:41,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:03:41,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:03:41,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:03:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:03:41,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:03:41,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:03:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:03:42,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:03:42,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270425058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:03:42,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:03:42,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-25 00:03:42,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236196280] [2023-11-25 00:03:42,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:03:42,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:03:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:03:42,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:03:42,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:03:42,053 INFO L87 Difference]: Start difference. First operand 967 states and 1286 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2023-11-25 00:03:44,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:03:46,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:03:48,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:03:50,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:03:52,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:03:54,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:03:56,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:03:58,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:04:01,020 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 [] [2023-11-25 00:04:03,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:04:03,724 INFO L93 Difference]: Finished difference Result 1949 states and 2428 transitions. [2023-11-25 00:04:03,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:04:03,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Word has length 8 [2023-11-25 00:04:03,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:04:03,736 INFO L225 Difference]: With dead ends: 1949 [2023-11-25 00:04:03,736 INFO L226 Difference]: Without dead ends: 1820 [2023-11-25 00:04:03,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:04:03,739 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 800 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 18 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:04:03,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 865 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 881 Invalid, 9 Unknown, 0 Unchecked, 21.6s Time] [2023-11-25 00:04:03,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2023-11-25 00:04:03,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1531. [2023-11-25 00:04:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1245 states have (on average 1.7718875502008031) internal successors, (2206), 1489 states have internal predecessors, (2206), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-25 00:04:03,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2286 transitions. [2023-11-25 00:04:03,798 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2286 transitions. Word has length 8 [2023-11-25 00:04:03,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:04:03,799 INFO L495 AbstractCegarLoop]: Abstraction has 1531 states and 2286 transitions. [2023-11-25 00:04:03,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2023-11-25 00:04:03,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2286 transitions. [2023-11-25 00:04:03,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-25 00:04:03,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:04:03,800 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1] [2023-11-25 00:04:03,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-25 00:04:04,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:04,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 255 more)] === [2023-11-25 00:04:04,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:04:04,006 INFO L85 PathProgramCache]: Analyzing trace with hash 375511495, now seen corresponding path program 1 times [2023-11-25 00:04:04,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:04:04,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810419176] [2023-11-25 00:04:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:04,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:04:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:04:04,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:04:04,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810419176] [2023-11-25 00:04:04,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810419176] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:04:04,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929276729] [2023-11-25 00:04:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:04:04,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:04:04,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:04,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:04:04,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d03fbd90-3448-4696-8466-3748015e6d80/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:04:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:04:04,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:04:04,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:04:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:04:04,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:04:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:04:04,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929276729] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:04:04,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [282786184] [2023-11-25 00:04:04,184 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-25 00:04:04,184 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:04:04,190 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:04:04,195 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:04:04,196 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:04:04,717 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:04:05,018 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12429#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 536870912 |ULTIMATE.start_main_~q~0#1|) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~p~0#1| 0) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (= |ULTIMATE.start_main_~h~0#1| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-25 00:04:05,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:04:05,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-25 00:04:05,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-25 00:04:05,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447208255] [2023-11-25 00:04:05,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-25 00:04:05,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:04:05,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:04:05,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:04:05,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-25 00:04:05,021 INFO L87 Difference]: Start difference. First operand 1531 states and 2286 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:04:09,661 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 [] [2023-11-25 00:04:11,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:04:13,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:04:15,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:04:17,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:04:20,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:04:21,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-25 00:04:23,896 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 []