./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u2_unwindbound100.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_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/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_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u2_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/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_9a373176-2944-46ef-8322-a999b782545a/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 fee025173b123742b5b08bb8895dc7c9911cdbb928d94cbe9fdb074ddb7a3572 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:15:09,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:15:09,749 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:15:09,760 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:15:09,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:15:09,799 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:15:09,800 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:15:09,800 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:15:09,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:15:09,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:15:09,807 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:15:09,807 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:15:09,808 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:15:09,810 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:15:09,810 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:15:09,811 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:15:09,811 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:15:09,811 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:15:09,812 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:15:09,812 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:15:09,813 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:15:09,814 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:15:09,815 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:15:09,815 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:15:09,816 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:15:09,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:15:09,817 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:15:09,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:15:09,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:15:09,818 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:15:09,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:15:09,820 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:15:09,820 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:15:09,820 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:15:09,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:15:09,821 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:15:09,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:15:09,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:15:09,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:15:09,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:15:09,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:15:09,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:15:09,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:15:09,823 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:15:09,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:15:09,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:15:09,824 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:15:09,824 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:15:09,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:15:09,825 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_9a373176-2944-46ef-8322-a999b782545a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fee025173b123742b5b08bb8895dc7c9911cdbb928d94cbe9fdb074ddb7a3572 [2023-11-24 23:15:10,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:15:10,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:15:10,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:15:10,143 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:15:10,144 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:15:10,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u2_unwindbound100.c [2023-11-24 23:15:13,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:15:13,587 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:15:13,588 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/sv-benchmarks/c/nla-digbench-scaling/geo1-u2_unwindbound100.c [2023-11-24 23:15:13,596 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/data/83e86a48e/5cc6fc3e8aa349ee9fb7d0c94a51f1c7/FLAG2386a46bc [2023-11-24 23:15:13,958 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/data/83e86a48e/5cc6fc3e8aa349ee9fb7d0c94a51f1c7 [2023-11-24 23:15:13,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:15:13,963 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:15:13,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:15:13,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:15:13,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:15:13,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:15:13" (1/1) ... [2023-11-24 23:15:13,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@298bca94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:13, skipping insertion in model container [2023-11-24 23:15:13,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:15:13" (1/1) ... [2023-11-24 23:15:14,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:15:14,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:15:14,188 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:15:14,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:15:14,220 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:15:14,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14 WrapperNode [2023-11-24 23:15:14,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:15:14,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:15:14,222 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:15:14,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:15:14,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14" (1/1) ... [2023-11-24 23:15:14,238 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14" (1/1) ... [2023-11-24 23:15:14,264 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2023-11-24 23:15:14,264 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:15:14,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:15:14,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:15:14,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:15:14,276 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14" (1/1) ... [2023-11-24 23:15:14,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14" (1/1) ... [2023-11-24 23:15:14,279 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14" (1/1) ... [2023-11-24 23:15:14,279 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14" (1/1) ... [2023-11-24 23:15:14,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14" (1/1) ... [2023-11-24 23:15:14,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14" (1/1) ... [2023-11-24 23:15:14,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14" (1/1) ... [2023-11-24 23:15:14,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14" (1/1) ... [2023-11-24 23:15:14,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:15:14,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:15:14,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:15:14,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:15:14,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14" (1/1) ... [2023-11-24 23:15:14,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:15:14,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:14,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:15:14,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:15:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:15:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:15:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:15:14,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:15:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:15:14,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:15:14,461 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:15:14,464 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:15:14,853 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:15:14,933 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:15:14,935 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:15:14,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:15:14 BoogieIcfgContainer [2023-11-24 23:15:14,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:15:14,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:15:14,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:15:14,972 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:15:14,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:15:13" (1/3) ... [2023-11-24 23:15:14,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc488f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:15:14, skipping insertion in model container [2023-11-24 23:15:14,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:15:14" (2/3) ... [2023-11-24 23:15:14,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc488f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:15:14, skipping insertion in model container [2023-11-24 23:15:14,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:15:14" (3/3) ... [2023-11-24 23:15:14,977 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-u2_unwindbound100.c [2023-11-24 23:15:15,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:15:15,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-24 23:15:15,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:15:15,058 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;@6290e29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:15:15,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-24 23:15:15,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 30 states have (on average 1.9) internal successors, (57), 54 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:15:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:15:15,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:15,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:15:15,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:15:15,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:15,077 INFO L85 PathProgramCache]: Analyzing trace with hash 118428, now seen corresponding path program 1 times [2023-11-24 23:15:15,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:15,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302239913] [2023-11-24 23:15:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:15,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:15:15,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:15,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302239913] [2023-11-24 23:15:15,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302239913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:15,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:15:15,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:15:15,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849210666] [2023-11-24 23:15:15,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:15,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:15:15,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:15:15,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:15:15,323 INFO L87 Difference]: Start difference. First operand has 58 states, 30 states have (on average 1.9) internal successors, (57), 54 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-24 23:15:15,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:15,413 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2023-11-24 23:15:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:15:15,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-24 23:15:15,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:15,424 INFO L225 Difference]: With dead ends: 81 [2023-11-24 23:15:15,424 INFO L226 Difference]: Without dead ends: 59 [2023-11-24 23:15:15,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:15:15,431 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 4 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:15,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 157 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:15:15,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-24 23:15:15,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-24 23:15:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 56 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:15:15,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2023-11-24 23:15:15,480 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 3 [2023-11-24 23:15:15,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:15,481 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2023-11-24 23:15:15,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-24 23:15:15,482 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2023-11-24 23:15:15,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:15:15,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:15,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 23:15:15,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:15:15,485 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:15:15,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:15,487 INFO L85 PathProgramCache]: Analyzing trace with hash -766837873, now seen corresponding path program 1 times [2023-11-24 23:15:15,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:15,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958685836] [2023-11-24 23:15:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:15,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:15,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:15:15,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603546584] [2023-11-24 23:15:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:15,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:15,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:15,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:15,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:15:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:15,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:15:15,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:15:15,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:15:15,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:15,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958685836] [2023-11-24 23:15:15,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:15:15,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603546584] [2023-11-24 23:15:15,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603546584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:15,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:15:15,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:15:15,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557105565] [2023-11-24 23:15:15,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:15,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:15:15,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:15,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:15:15,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:15:15,642 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2023-11-24 23:15:15,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:15,849 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2023-11-24 23:15:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:15:15,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) Word has length 6 [2023-11-24 23:15:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:15,852 INFO L225 Difference]: With dead ends: 93 [2023-11-24 23:15:15,852 INFO L226 Difference]: Without dead ends: 83 [2023-11-24 23:15:15,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:15:15,854 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 22 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:15,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 55 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:15:15,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-24 23:15:15,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2023-11-24 23:15:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 50 states have (on average 1.64) internal successors, (82), 73 states have internal predecessors, (82), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:15:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2023-11-24 23:15:15,875 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 6 [2023-11-24 23:15:15,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:15,875 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2023-11-24 23:15:15,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2023-11-24 23:15:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2023-11-24 23:15:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:15:15,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:15,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:15:15,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:15:16,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-24 23:15:16,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:15:16,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:16,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1984700563, now seen corresponding path program 1 times [2023-11-24 23:15:16,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:16,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994603993] [2023-11-24 23:15:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:16,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:16,099 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:15:16,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912625860] [2023-11-24 23:15:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:16,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:16,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:16,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:16,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:15:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:16,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:15:16,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:15:16,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:15:16,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994603993] [2023-11-24 23:15:16,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:15:16,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912625860] [2023-11-24 23:15:16,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912625860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:16,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:15:16,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:15:16,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405456827] [2023-11-24 23:15:16,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:16,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:15:16,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:16,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:15:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:15:16,246 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2023-11-24 23:15:16,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:16,394 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2023-11-24 23:15:16,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:15:16,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 [2023-11-24 23:15:16,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:16,402 INFO L225 Difference]: With dead ends: 83 [2023-11-24 23:15:16,402 INFO L226 Difference]: Without dead ends: 81 [2023-11-24 23:15:16,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:15:16,408 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 16 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:16,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 53 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:15:16,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-24 23:15:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2023-11-24 23:15:16,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 50 states have (on average 1.6) internal successors, (80), 73 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:15:16,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2023-11-24 23:15:16,433 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 10 [2023-11-24 23:15:16,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:16,434 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2023-11-24 23:15:16,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2023-11-24 23:15:16,435 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2023-11-24 23:15:16,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:15:16,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:16,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:15:16,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:15:16,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:16,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:15:16,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:16,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1396175367, now seen corresponding path program 1 times [2023-11-24 23:15:16,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:16,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157099508] [2023-11-24 23:15:16,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:16,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:16,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:15:16,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416841864] [2023-11-24 23:15:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:16,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:16,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:16,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:16,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:15:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:16,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:15:16,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:15:16,864 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:15:16,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:16,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157099508] [2023-11-24 23:15:16,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:15:16,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416841864] [2023-11-24 23:15:16,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416841864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:16,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:15:16,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:15:16,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761781345] [2023-11-24 23:15:16,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:16,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:15:16,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:16,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:15:16,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:15:16,871 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2023-11-24 23:15:17,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:17,099 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2023-11-24 23:15:17,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:15:17,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 11 [2023-11-24 23:15:17,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:17,102 INFO L225 Difference]: With dead ends: 80 [2023-11-24 23:15:17,102 INFO L226 Difference]: Without dead ends: 71 [2023-11-24 23:15:17,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:15:17,104 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 31 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:17,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 31 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:15:17,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-24 23:15:17,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2023-11-24 23:15:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.38) internal successors, (69), 64 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:15:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2023-11-24 23:15:17,117 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 11 [2023-11-24 23:15:17,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:17,117 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2023-11-24 23:15:17,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2023-11-24 23:15:17,118 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2023-11-24 23:15:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 23:15:17,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:17,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:15:17,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:15:17,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:17,320 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:15:17,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2062226116, now seen corresponding path program 1 times [2023-11-24 23:15:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:17,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752425764] [2023-11-24 23:15:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:17,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:17,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:15:17,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1330381330] [2023-11-24 23:15:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:17,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:17,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:17,336 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:17,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:15:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:17,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:15:17,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:15:17,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:15:17,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:17,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752425764] [2023-11-24 23:15:17,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:15:17,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330381330] [2023-11-24 23:15:17,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330381330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:17,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:15:17,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:15:17,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010019480] [2023-11-24 23:15:17,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:17,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:15:17,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:17,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:15:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:15:17,481 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:15:17,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:17,504 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2023-11-24 23:15:17,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:15:17,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-24 23:15:17,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:17,508 INFO L225 Difference]: With dead ends: 68 [2023-11-24 23:15:17,509 INFO L226 Difference]: Without dead ends: 67 [2023-11-24 23:15:17,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:15:17,510 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 28 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:17,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 40 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:15:17,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-24 23:15:17,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-24 23:15:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.34) internal successors, (67), 63 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:15:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2023-11-24 23:15:17,519 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 18 [2023-11-24 23:15:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:17,529 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2023-11-24 23:15:17,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:15:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2023-11-24 23:15:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:15:17,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:17,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:15:17,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-24 23:15:17,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:17,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:15:17,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:17,737 INFO L85 PathProgramCache]: Analyzing trace with hash -495499772, now seen corresponding path program 1 times [2023-11-24 23:15:17,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:17,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576422500] [2023-11-24 23:15:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:17,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:17,746 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:15:17,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747924455] [2023-11-24 23:15:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:17,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:17,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:17,748 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:17,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:15:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:17,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:15:17,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:15:17,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:15:17,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:17,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576422500] [2023-11-24 23:15:17,853 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:15:17,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747924455] [2023-11-24 23:15:17,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747924455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:17,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:15:17,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:15:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522506091] [2023-11-24 23:15:17,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:17,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:15:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:17,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:15:17,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:15:17,855 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:15:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:15:17,875 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2023-11-24 23:15:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:15:17,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-24 23:15:17,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:15:17,877 INFO L225 Difference]: With dead ends: 76 [2023-11-24 23:15:17,877 INFO L226 Difference]: Without dead ends: 75 [2023-11-24 23:15:17,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:15:17,879 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 10 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:15:17,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 79 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:15:17,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-24 23:15:17,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2023-11-24 23:15:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.32) internal successors, (66), 63 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:15:17,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2023-11-24 23:15:17,888 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 19 [2023-11-24 23:15:17,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:15:17,888 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2023-11-24 23:15:17,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:15:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2023-11-24 23:15:17,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 23:15:17,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:15:17,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:15:17,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:15:18,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 23:15:18,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:15:18,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:15:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1819335611, now seen corresponding path program 1 times [2023-11-24 23:15:18,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:15:18,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466705714] [2023-11-24 23:15:18,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:18,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:15:18,110 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:15:18,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716558626] [2023-11-24 23:15:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:15:18,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:15:18,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:15:18,112 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:15:18,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:15:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:15:18,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:15:18,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:15:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:15:21,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:15:21,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:15:21,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466705714] [2023-11-24 23:15:21,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:15:21,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716558626] [2023-11-24 23:15:21,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716558626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:15:21,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:15:21,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:15:21,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518553350] [2023-11-24 23:15:21,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:15:21,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:15:21,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:15:21,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:15:21,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=6, Unknown=1, NotChecked=0, Total=12 [2023-11-24 23:15:21,227 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:15:23,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:25,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:27,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:29,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:31,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:34,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:36,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:38,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:40,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:42,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:44,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:46,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:48,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:50,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:52,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:53,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:55,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:15:57,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:16:00,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:16:02,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:16:04,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:16:06,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:16:08,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-24 23:16:08,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:08,200 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2023-11-24 23:16:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:16:08,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-11-24 23:16:08,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:08,202 INFO L225 Difference]: With dead ends: 67 [2023-11-24 23:16:08,202 INFO L226 Difference]: Without dead ends: 66 [2023-11-24 23:16:08,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=9, Invalid=10, Unknown=1, NotChecked=0, Total=20 [2023-11-24 23:16:08,203 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 38 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:08,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 52 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 16 Unknown, 0 Unchecked, 46.8s Time] [2023-11-24 23:16:08,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-24 23:16:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-11-24 23:16:08,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 50 states have (on average 1.3) internal successors, (65), 62 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:16:08,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2023-11-24 23:16:08,213 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 20 [2023-11-24 23:16:08,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:08,214 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2023-11-24 23:16:08,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:16:08,214 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2023-11-24 23:16:08,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 23:16:08,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:08,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:08,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:08,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:08,416 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:16:08,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:08,417 INFO L85 PathProgramCache]: Analyzing trace with hash 564829188, now seen corresponding path program 1 times [2023-11-24 23:16:08,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:08,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409447900] [2023-11-24 23:16:08,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:08,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:08,437 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:08,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18387574] [2023-11-24 23:16:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:08,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:08,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:08,443 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:08,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:16:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:08,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:16:08,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:08,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:08,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:08,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409447900] [2023-11-24 23:16:08,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:08,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18387574] [2023-11-24 23:16:08,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18387574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:08,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:08,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:16:08,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088147696] [2023-11-24 23:16:08,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:08,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:08,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:08,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:08,575 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:16:08,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:08,737 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2023-11-24 23:16:08,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:08,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-24 23:16:08,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:08,739 INFO L225 Difference]: With dead ends: 73 [2023-11-24 23:16:08,739 INFO L226 Difference]: Without dead ends: 72 [2023-11-24 23:16:08,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:08,740 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:08,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 41 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:16:08,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-24 23:16:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2023-11-24 23:16:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 64 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:16:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2023-11-24 23:16:08,749 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 21 [2023-11-24 23:16:08,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:08,750 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2023-11-24 23:16:08,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:16:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2023-11-24 23:16:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-24 23:16:08,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:08,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:08,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:08,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-24 23:16:08,956 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:16:08,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash 329835741, now seen corresponding path program 1 times [2023-11-24 23:16:08,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:08,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154529374] [2023-11-24 23:16:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:08,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:08,966 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:08,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481770342] [2023-11-24 23:16:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:08,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:08,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:08,970 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:08,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:16:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:09,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:16:09,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:09,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:09,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:09,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154529374] [2023-11-24 23:16:09,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:09,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481770342] [2023-11-24 23:16:09,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481770342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:09,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:09,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:16:09,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361396000] [2023-11-24 23:16:09,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:09,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:09,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:09,244 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:16:09,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:09,539 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2023-11-24 23:16:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:09,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-11-24 23:16:09,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:09,541 INFO L225 Difference]: With dead ends: 75 [2023-11-24 23:16:09,541 INFO L226 Difference]: Without dead ends: 74 [2023-11-24 23:16:09,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:09,542 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:09,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 49 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:16:09,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-24 23:16:09,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2023-11-24 23:16:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 65 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:16:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2023-11-24 23:16:09,552 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 22 [2023-11-24 23:16:09,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:09,553 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2023-11-24 23:16:09,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:16:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2023-11-24 23:16:09,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-24 23:16:09,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:09,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:09,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:09,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-24 23:16:09,762 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:16:09,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:09,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1634973478, now seen corresponding path program 1 times [2023-11-24 23:16:09,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:09,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425682579] [2023-11-24 23:16:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:09,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:09,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:09,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054130932] [2023-11-24 23:16:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:09,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:09,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:09,805 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:09,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:16:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:09,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:16:09,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:09,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:09,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:16:09,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425682579] [2023-11-24 23:16:09,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:16:09,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054130932] [2023-11-24 23:16:09,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054130932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:09,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:09,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:16:09,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605070677] [2023-11-24 23:16:09,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:09,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:09,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:16:09,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:09,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:09,928 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:16:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:10,532 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2023-11-24 23:16:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:10,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-24 23:16:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:10,534 INFO L225 Difference]: With dead ends: 69 [2023-11-24 23:16:10,534 INFO L226 Difference]: Without dead ends: 62 [2023-11-24 23:16:10,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:10,536 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 49 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:10,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 34 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:16:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-24 23:16:10,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-24 23:16:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 58 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:16:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2023-11-24 23:16:10,546 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 23 [2023-11-24 23:16:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:10,547 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2023-11-24 23:16:10,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 23:16:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2023-11-24 23:16:10,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 23:16:10,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:10,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:10,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:10,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:10,756 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2023-11-24 23:16:10,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:10,756 INFO L85 PathProgramCache]: Analyzing trace with hash 933099210, now seen corresponding path program 1 times [2023-11-24 23:16:10,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:16:10,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277620714] [2023-11-24 23:16:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:10,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:16:10,767 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:16:10,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281029980] [2023-11-24 23:16:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:10,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:10,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:10,772 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:10,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:16:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:16:10,857 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:16:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:16:10,946 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:16:10,946 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:16:10,948 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2023-11-24 23:16:10,950 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2023-11-24 23:16:10,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2023-11-24 23:16:10,955 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2023-11-24 23:16:10,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2023-11-24 23:16:10,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2023-11-24 23:16:10,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2023-11-24 23:16:10,956 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2023-11-24 23:16:10,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2023-11-24 23:16:10,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2023-11-24 23:16:10,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2023-11-24 23:16:10,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2023-11-24 23:16:10,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2023-11-24 23:16:10,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 24 remaining) [2023-11-24 23:16:10,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 24 remaining) [2023-11-24 23:16:10,958 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2023-11-24 23:16:10,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2023-11-24 23:16:10,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2023-11-24 23:16:10,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2023-11-24 23:16:10,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2023-11-24 23:16:10,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2023-11-24 23:16:10,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2023-11-24 23:16:10,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2023-11-24 23:16:10,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2023-11-24 23:16:10,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:11,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:11,177 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:11,182 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:16:11,209 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-24 23:16:11,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:16:11 BoogieIcfgContainer [2023-11-24 23:16:11,227 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:16:11,228 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:16:11,228 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:16:11,228 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:16:11,229 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:15:14" (3/4) ... [2023-11-24 23:16:11,230 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 23:16:11,247 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-24 23:16:11,304 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-24 23:16:11,304 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:16:11,305 INFO L158 Benchmark]: Toolchain (without parser) took 57341.88ms. Allocated memory is still 165.7MB. Free memory was 122.2MB in the beginning and 91.1MB in the end (delta: 31.1MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2023-11-24 23:16:11,305 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory was 80.5MB in the beginning and 80.5MB in the end (delta: 31.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:16:11,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.75ms. Allocated memory is still 165.7MB. Free memory was 121.6MB in the beginning and 111.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:16:11,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.17ms. Allocated memory is still 165.7MB. Free memory was 111.1MB in the beginning and 109.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:16:11,307 INFO L158 Benchmark]: Boogie Preprocessor took 27.44ms. Allocated memory is still 165.7MB. Free memory was 109.5MB in the beginning and 108.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:16:11,308 INFO L158 Benchmark]: RCFGBuilder took 643.86ms. Allocated memory is still 165.7MB. Free memory was 108.1MB in the beginning and 137.0MB in the end (delta: -28.9MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2023-11-24 23:16:11,308 INFO L158 Benchmark]: TraceAbstraction took 56260.15ms. Allocated memory is still 165.7MB. Free memory was 136.1MB in the beginning and 93.2MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-24 23:16:11,309 INFO L158 Benchmark]: Witness Printer took 75.96ms. Allocated memory is still 165.7MB. Free memory was 93.2MB in the beginning and 91.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:16:11,312 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory was 80.5MB in the beginning and 80.5MB in the end (delta: 31.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.75ms. Allocated memory is still 165.7MB. Free memory was 121.6MB in the beginning and 111.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.17ms. Allocated memory is still 165.7MB. Free memory was 111.1MB in the beginning and 109.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.44ms. Allocated memory is still 165.7MB. Free memory was 109.5MB in the beginning and 108.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 643.86ms. Allocated memory is still 165.7MB. Free memory was 108.1MB in the beginning and 137.0MB in the end (delta: -28.9MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * TraceAbstraction took 56260.15ms. Allocated memory is still 165.7MB. Free memory was 136.1MB in the beginning and 93.2MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 75.96ms. Allocated memory is still 165.7MB. Free memory was 93.2MB in the beginning and 91.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 41]: integer overflow possible integer overflow possible We found a FailurePath: [L22] int counter = 0; [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [c=1, counter=0, x=1, y=4294967295, z=4294967295] [L33] EXPR counter++ VAL [c=1, counter=1, x=1, y=4294967295, z=4294967295] [L33] COND TRUE counter++<100 [L34] EXPR x*z VAL [c=1, counter=1, x=1, y=4294967295, z=4294967295] [L34] EXPR x*z - x VAL [c=1, counter=1, x=1, y=4294967295, z=4294967295] [L34] EXPR x*z - x - y VAL [c=1, counter=1, x=1, y=4294967295, z=4294967295] [L34] EXPR x*z - x - y + 1 VAL [c=1, counter=1, x=1, y=4294967295, z=4294967295] [L34] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [counter=1] [L16] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, counter=1, x=1, y=4294967295, z=4294967295] [L36] COND FALSE !(!(c < k)) VAL [c=1, counter=1, k=2, x=1, y=4294967295, z=4294967295] [L39] EXPR c + 1 [L39] c = c + 1 VAL [c=2, counter=1, k=2, x=1, y=4294967295, z=4294967295] [L40] EXPR x * z VAL [c=2, counter=1, k=2, x=1, y=4294967295, z=4294967295] [L40] EXPR x * z + 1 [L40] x = x * z + 1 VAL [c=2, counter=1, k=2, x=4294967296, y=4294967295, z=4294967295] [L41] y * z VAL [c=2, counter=1, k=2, x=4294967296, y=4294967295, z=4294967295] - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 33]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 34]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 39]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 39]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 40]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 40]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 40]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 40]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 41]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 47]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 47]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 47]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 47]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 58 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 56.1s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 48.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 mSolverCounterUnknown, 228 SdHoareTripleChecker+Valid, 48.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 224 mSDsluCounter, 591 SdHoareTripleChecker+Invalid, 48.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 274 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 456 IncrementalHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 317 mSDtfsCounter, 456 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=2, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 30 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 143 ConstructedInterpolants, 1 QuantifiedInterpolants, 691 SizeOfPredicates, 4 NumberOfNonLiveVariables, 467 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-24 23:16:11,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a373176-2944-46ef-8322-a999b782545a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)