./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound20.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_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/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_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/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_15162d9a-4982-4341-bc08-0a65799d9733/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 290432887833d1264fa39f327d8609faf39248fe680017022e16e5c72d0bf2b6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:52:40,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:52:40,625 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:52:40,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:52:40,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:52:40,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:52:40,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:52:40,667 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:52:40,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:52:40,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:52:40,674 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:52:40,675 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:52:40,675 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:52:40,677 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:52:40,677 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:52:40,678 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:52:40,678 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:52:40,679 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:52:40,679 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:52:40,680 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:52:40,680 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:52:40,681 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:52:40,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:52:40,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:52:40,683 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:52:40,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:52:40,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:52:40,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:52:40,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:52:40,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:52:40,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:52:40,686 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:52:40,687 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:52:40,687 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:52:40,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:52:40,688 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:52:40,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:52:40,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:52:40,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:52:40,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:52:40,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:52:40,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:52:40,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:52:40,690 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:52:40,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:52:40,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:52:40,691 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:52:40,692 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:52:40,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:52:40,692 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_15162d9a-4982-4341-bc08-0a65799d9733/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 290432887833d1264fa39f327d8609faf39248fe680017022e16e5c72d0bf2b6 [2023-11-24 23:52:40,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:52:41,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:52:41,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:52:41,011 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:52:41,012 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:52:41,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound20.c [2023-11-24 23:52:44,066 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:52:44,345 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:52:44,346 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound20.c [2023-11-24 23:52:44,353 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/data/e2fd66a99/dc61f31b228e4472bfb003347fa1a673/FLAGee03de1b9 [2023-11-24 23:52:44,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/data/e2fd66a99/dc61f31b228e4472bfb003347fa1a673 [2023-11-24 23:52:44,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:52:44,371 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:52:44,372 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:52:44,372 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:52:44,378 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:52:44,379 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,380 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1119224c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44, skipping insertion in model container [2023-11-24 23:52:44,380 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,400 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:52:44,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:52:44,601 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:52:44,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:52:44,629 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:52:44,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44 WrapperNode [2023-11-24 23:52:44,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:52:44,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:52:44,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:52:44,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:52:44,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,665 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-24 23:52:44,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:52:44,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:52:44,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:52:44,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:52:44,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,685 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,686 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:52:44,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:52:44,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:52:44,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:52:44,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44" (1/1) ... [2023-11-24 23:52:44,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:52:44,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:44,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:52:44,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:52:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:52:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:52:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:52:44,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:52:44,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:52:44,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:52:44,826 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:52:44,829 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:52:44,991 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:52:45,018 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:52:45,019 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:52:45,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:45 BoogieIcfgContainer [2023-11-24 23:52:45,021 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:52:45,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:52:45,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:52:45,027 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:52:45,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:52:44" (1/3) ... [2023-11-24 23:52:45,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c8ba52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:52:45, skipping insertion in model container [2023-11-24 23:52:45,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:44" (2/3) ... [2023-11-24 23:52:45,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c8ba52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:52:45, skipping insertion in model container [2023-11-24 23:52:45,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:45" (3/3) ... [2023-11-24 23:52:45,030 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound20.c [2023-11-24 23:52:45,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:52:45,046 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-24 23:52:45,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:52:45,096 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;@102383d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:52:45,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-24 23:52:45,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 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 23:52:45,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:52:45,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:45,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:52:45,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-24 23:52:45,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash 88477, now seen corresponding path program 1 times [2023-11-24 23:52:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:45,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448631790] [2023-11-24 23:52:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:45,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:45,252 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 23:52:45,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:45,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448631790] [2023-11-24 23:52:45,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448631790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:45,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:45,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:52:45,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036587206] [2023-11-24 23:52:45,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:45,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:52:45,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:45,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:52:45,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:52:45,294 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 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 2 states, 2 states have (on average 1.5) internal successors, (3), 2 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 23:52:45,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:45,323 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2023-11-24 23:52:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:52:45,326 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 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 23:52:45,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:45,344 INFO L225 Difference]: With dead ends: 34 [2023-11-24 23:52:45,344 INFO L226 Difference]: Without dead ends: 21 [2023-11-24 23:52:45,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:52:45,350 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:45,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:45,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-24 23:52:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-24 23:52:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 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 23:52:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-11-24 23:52:45,392 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 3 [2023-11-24 23:52:45,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:45,392 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-11-24 23:52:45,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 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 23:52:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-11-24 23:52:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:52:45,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:45,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:52:45,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:52:45,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-24 23:52:45,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:45,395 INFO L85 PathProgramCache]: Analyzing trace with hash 87676, now seen corresponding path program 1 times [2023-11-24 23:52:45,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:45,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370049869] [2023-11-24 23:52:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:45,548 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 23:52:45,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:45,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370049869] [2023-11-24 23:52:45,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370049869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:45,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:45,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:52:45,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494896092] [2023-11-24 23:52:45,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:45,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:52:45,553 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. 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 23:52:45,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:45,653 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2023-11-24 23:52:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:52:45,654 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 23:52:45,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:45,655 INFO L225 Difference]: With dead ends: 30 [2023-11-24 23:52:45,655 INFO L226 Difference]: Without dead ends: 25 [2023-11-24 23:52:45,656 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 23:52:45,658 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:45,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 46 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:45,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-24 23:52:45,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-24 23:52:45,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 22 states have internal predecessors, (24), 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 23:52:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2023-11-24 23:52:45,665 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 3 [2023-11-24 23:52:45,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:45,666 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2023-11-24 23:52:45,666 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 23:52:45,666 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2023-11-24 23:52:45,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:52:45,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:45,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:45,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:52:45,668 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-24 23:52:45,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash -632484253, now seen corresponding path program 1 times [2023-11-24 23:52:45,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:45,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036348388] [2023-11-24 23:52:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:45,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:45,684 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:45,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400097845] [2023-11-24 23:52:45,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:45,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:45,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:45,705 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:45,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:52:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:45,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:52:45,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:45,818 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 23:52:45,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:45,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:45,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036348388] [2023-11-24 23:52:45,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:45,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400097845] [2023-11-24 23:52:45,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400097845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:45,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:45,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:52:45,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820443443] [2023-11-24 23:52:45,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:45,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:45,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:45,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:45,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:45,825 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:45,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:45,864 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2023-11-24 23:52:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:45,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-24 23:52:45,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:45,866 INFO L225 Difference]: With dead ends: 37 [2023-11-24 23:52:45,866 INFO L226 Difference]: Without dead ends: 31 [2023-11-24 23:52:45,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 23:52:45,868 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:45,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-24 23:52:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-24 23:52:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 states have internal predecessors, (29), 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 23:52:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2023-11-24 23:52:45,876 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 7 [2023-11-24 23:52:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:45,877 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-11-24 23:52:45,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2023-11-24 23:52:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:52:45,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:45,879 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:45,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:46,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:46,085 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-24 23:52:46,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:46,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1004619476, now seen corresponding path program 1 times [2023-11-24 23:52:46,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:46,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167138225] [2023-11-24 23:52:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:46,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:46,097 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:46,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206620309] [2023-11-24 23:52:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:46,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:46,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:46,107 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:46,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:52:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:46,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:52:46,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:46,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:46,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:46,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167138225] [2023-11-24 23:52:46,243 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:46,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206620309] [2023-11-24 23:52:46,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206620309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:46,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:46,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:52:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757482016] [2023-11-24 23:52:46,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:46,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:52:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:52:46,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 23:52:46,246 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 23:52:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:46,302 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2023-11-24 23:52:46,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:52:46,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 15 [2023-11-24 23:52:46,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:46,304 INFO L225 Difference]: With dead ends: 31 [2023-11-24 23:52:46,304 INFO L226 Difference]: Without dead ends: 30 [2023-11-24 23:52:46,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-24 23:52:46,306 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:46,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 39 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:46,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-24 23:52:46,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-24 23:52:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 26 states have internal predecessors, (28), 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 23:52:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-11-24 23:52:46,314 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 15 [2023-11-24 23:52:46,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:46,315 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-11-24 23:52:46,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 23:52:46,316 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-11-24 23:52:46,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:52:46,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:46,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:46,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:46,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:46,523 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-24 23:52:46,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:46,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1078432725, now seen corresponding path program 1 times [2023-11-24 23:52:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:46,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319088501] [2023-11-24 23:52:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:46,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:46,538 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:46,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843386643] [2023-11-24 23:52:46,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:46,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:46,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:46,540 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:46,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:52:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:46,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:52:46,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:46,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:46,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:46,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319088501] [2023-11-24 23:52:46,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:46,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843386643] [2023-11-24 23:52:46,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843386643] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:46,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2066555127] [2023-11-24 23:52:46,817 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-24 23:52:46,818 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:46,823 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:46,830 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:46,830 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:48,160 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 60 for LOIs [2023-11-24 23:52:48,194 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:49,392 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '488#(and (<= 1 |#StackHeapBarrier|) (= ~counter~0 |ULTIMATE.start_main_#t~post5#1|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_#t~post5#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-24 23:52:49,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:49,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:52:49,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2023-11-24 23:52:49,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102879611] [2023-11-24 23:52:49,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:49,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 23:52:49,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:49,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 23:52:49,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:52:49,396 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:52:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:49,582 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2023-11-24 23:52:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:52:49,583 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-11-24 23:52:49,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:49,584 INFO L225 Difference]: With dead ends: 75 [2023-11-24 23:52:49,585 INFO L226 Difference]: Without dead ends: 71 [2023-11-24 23:52:49,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2023-11-24 23:52:49,586 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:49,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 83 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-24 23:52:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2023-11-24 23:52:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 46 states have (on average 1.326086956521739) internal successors, (61), 50 states have internal predecessors, (61), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:52:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2023-11-24 23:52:49,598 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 16 [2023-11-24 23:52:49,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:49,598 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2023-11-24 23:52:49,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:52:49,599 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2023-11-24 23:52:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 23:52:49,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:49,600 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:49,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-24 23:52:49,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:49,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-24 23:52:49,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:49,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1233982139, now seen corresponding path program 1 times [2023-11-24 23:52:49,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:49,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594674340] [2023-11-24 23:52:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:49,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:49,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:49,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105602234] [2023-11-24 23:52:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:49,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:49,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:49,825 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:49,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:52:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:49,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:52:49,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:49,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:49,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:49,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594674340] [2023-11-24 23:52:49,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:49,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105602234] [2023-11-24 23:52:49,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105602234] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:49,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [652904533] [2023-11-24 23:52:49,970 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-24 23:52:49,970 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:49,970 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:49,971 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:49,971 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:50,620 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 60 for LOIs [2023-11-24 23:52:50,647 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:51,673 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '785#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= 1 ~counter~0) (<= ~counter~0 20))' at error location [2023-11-24 23:52:51,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:51,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:52:51,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-24 23:52:51,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817732921] [2023-11-24 23:52:51,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:51,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:52:51,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:51,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:52:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:52:51,677 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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 23:52:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:51,773 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2023-11-24 23:52:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:52:51,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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) Word has length 19 [2023-11-24 23:52:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:51,775 INFO L225 Difference]: With dead ends: 70 [2023-11-24 23:52:51,775 INFO L226 Difference]: Without dead ends: 60 [2023-11-24 23:52:51,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-24 23:52:51,777 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:51,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 51 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:51,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-24 23:52:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-11-24 23:52:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:52:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2023-11-24 23:52:51,786 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 19 [2023-11-24 23:52:51,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:51,787 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2023-11-24 23:52:51,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 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 23:52:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2023-11-24 23:52:51,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-24 23:52:51,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:51,789 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-11-24 23:52:51,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:51,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-24 23:52:51,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-24 23:52:51,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:51,995 INFO L85 PathProgramCache]: Analyzing trace with hash 6912973, now seen corresponding path program 2 times [2023-11-24 23:52:51,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:51,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748881432] [2023-11-24 23:52:51,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:51,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:52,012 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:52,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700565160] [2023-11-24 23:52:52,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:52:52,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:52,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:52,017 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:52,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:52:52,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 23:52:52,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:52:52,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:52:52,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-24 23:52:52,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:52,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:52,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748881432] [2023-11-24 23:52:52,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:52,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700565160] [2023-11-24 23:52:52,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700565160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:52,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:52,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:52:52,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347090852] [2023-11-24 23:52:52,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:52,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:52:52,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:52,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:52:52,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:52:52,114 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:52:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:52,149 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2023-11-24 23:52:52,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:52:52,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2023-11-24 23:52:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:52,151 INFO L225 Difference]: With dead ends: 60 [2023-11-24 23:52:52,151 INFO L226 Difference]: Without dead ends: 59 [2023-11-24 23:52:52,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 23:52:52,152 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:52,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:52,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-24 23:52:52,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-24 23:52:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 50 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:52:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2023-11-24 23:52:52,161 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 52 [2023-11-24 23:52:52,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:52,163 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2023-11-24 23:52:52,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:52:52,164 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2023-11-24 23:52:52,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-24 23:52:52,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:52,168 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2023-11-24 23:52:52,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-24 23:52:52,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:52,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-24 23:52:52,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:52,377 INFO L85 PathProgramCache]: Analyzing trace with hash -214005821, now seen corresponding path program 2 times [2023-11-24 23:52:52,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:52,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757954608] [2023-11-24 23:52:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:52,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:52,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:52,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463841910] [2023-11-24 23:52:52,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:52:52,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:52,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:52,401 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:52,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:52:52,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-24 23:52:52,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:52:52,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:52:52,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:52,872 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-24 23:52:52,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:53,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757954608] [2023-11-24 23:52:53,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463841910] [2023-11-24 23:52:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463841910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:53,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1455987958] [2023-11-24 23:52:53,083 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-24 23:52:53,083 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:53,083 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:53,084 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:53,084 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:53,623 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 60 for LOIs [2023-11-24 23:52:53,647 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:54,945 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1499#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= ~counter~0 20) (<= 1 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-24 23:52:54,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:54,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:52:54,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-24 23:52:54,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877888823] [2023-11-24 23:52:54,946 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:54,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:52:54,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:54,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:52:54,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2023-11-24 23:52:54,948 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:52:55,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:55,107 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2023-11-24 23:52:55,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 23:52:55,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2023-11-24 23:52:55,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:55,109 INFO L225 Difference]: With dead ends: 77 [2023-11-24 23:52:55,109 INFO L226 Difference]: Without dead ends: 73 [2023-11-24 23:52:55,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 102 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2023-11-24 23:52:55,110 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:55,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 40 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:55,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-24 23:52:55,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2023-11-24 23:52:55,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:52:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2023-11-24 23:52:55,129 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 55 [2023-11-24 23:52:55,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:55,130 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2023-11-24 23:52:55,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 23:52:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2023-11-24 23:52:55,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-24 23:52:55,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:55,131 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1] [2023-11-24 23:52:55,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:55,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-24 23:52:55,336 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-24 23:52:55,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash -533496805, now seen corresponding path program 3 times [2023-11-24 23:52:55,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:55,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712864258] [2023-11-24 23:52:55,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:55,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:55,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:55,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324462674] [2023-11-24 23:52:55,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:52:55,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:55,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:55,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:55,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:52:55,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:52:55,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:52:55,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 23:52:55,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 23:52:55,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-24 23:52:55,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:55,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712864258] [2023-11-24 23:52:55,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:55,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324462674] [2023-11-24 23:52:55,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324462674] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:55,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [843442930] [2023-11-24 23:52:55,858 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-24 23:52:55,859 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:55,859 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:55,859 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:55,859 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:56,363 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 60 for LOIs [2023-11-24 23:52:56,385 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:57,932 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2103#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= ~counter~0 20) (<= 1 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-24 23:52:57,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:57,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:52:57,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-24 23:52:57,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819197814] [2023-11-24 23:52:57,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:57,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 23:52:57,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:57,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 23:52:57,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2023-11-24 23:52:57,935 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 14 states, 13 states have (on average 8.076923076923077) internal successors, (105), 14 states have internal predecessors, (105), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-24 23:52:58,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:58,302 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2023-11-24 23:52:58,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 23:52:58,302 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.076923076923077) internal successors, (105), 14 states have internal predecessors, (105), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 67 [2023-11-24 23:52:58,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:58,304 INFO L225 Difference]: With dead ends: 155 [2023-11-24 23:52:58,304 INFO L226 Difference]: Without dead ends: 139 [2023-11-24 23:52:58,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 166 SyntacticMatches, 12 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2023-11-24 23:52:58,306 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 78 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:58,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 272 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:52:58,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-24 23:52:58,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-11-24 23:52:58,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 121 states have (on average 1.0165289256198347) internal successors, (123), 122 states have internal predecessors, (123), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-24 23:52:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2023-11-24 23:52:58,323 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 67 [2023-11-24 23:52:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:58,323 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2023-11-24 23:52:58,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.076923076923077) internal successors, (105), 14 states have internal predecessors, (105), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-24 23:52:58,324 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2023-11-24 23:52:58,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 23:52:58,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:58,326 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1] [2023-11-24 23:52:58,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:58,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-24 23:52:58,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-24 23:52:58,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:58,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1825356419, now seen corresponding path program 4 times [2023-11-24 23:52:58,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:58,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147247865] [2023-11-24 23:52:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:58,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:58,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:52:58,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747161406] [2023-11-24 23:52:58,572 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:52:58,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:58,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:58,573 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:58,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:52:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:58,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-24 23:52:58,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 732 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-24 23:52:58,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 732 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-24 23:52:59,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:59,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147247865] [2023-11-24 23:52:59,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:52:59,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747161406] [2023-11-24 23:52:59,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747161406] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:59,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1211877582] [2023-11-24 23:52:59,677 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-24 23:52:59,677 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:59,678 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:59,678 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:59,678 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:53:00,083 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 60 for LOIs [2023-11-24 23:53:00,105 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:53:03,079 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3402#(and (<= 2 ~counter~0) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= ~counter~0 20) (<= 1 |ULTIMATE.start_main_~r~0#1|))' at error location [2023-11-24 23:53:03,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:53:03,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:53:03,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-11-24 23:53:03,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936114498] [2023-11-24 23:53:03,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:53:03,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-24 23:53:03,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:03,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-24 23:53:03,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2023-11-24 23:53:03,084 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand has 28 states, 27 states have (on average 8.555555555555555) internal successors, (231), 28 states have internal predecessors, (231), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-24 23:53:04,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:04,549 INFO L93 Difference]: Finished difference Result 309 states and 357 transitions. [2023-11-24 23:53:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-24 23:53:04,550 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 8.555555555555555) internal successors, (231), 28 states have internal predecessors, (231), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 151 [2023-11-24 23:53:04,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:04,553 INFO L225 Difference]: With dead ends: 309 [2023-11-24 23:53:04,553 INFO L226 Difference]: Without dead ends: 279 [2023-11-24 23:53:04,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 390 SyntacticMatches, 26 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=586, Invalid=1766, Unknown=0, NotChecked=0, Total=2352 [2023-11-24 23:53:04,556 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 234 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:04,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1133 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-24 23:53:04,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-24 23:53:04,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-11-24 23:53:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 247 states have (on average 1.008097165991903) internal successors, (249), 248 states have internal predecessors, (249), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-24 23:53:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 301 transitions. [2023-11-24 23:53:04,611 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 301 transitions. Word has length 151 [2023-11-24 23:53:04,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:04,613 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 301 transitions. [2023-11-24 23:53:04,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 8.555555555555555) internal successors, (231), 28 states have internal predecessors, (231), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-24 23:53:04,614 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 301 transitions. [2023-11-24 23:53:04,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-11-24 23:53:04,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:04,628 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 1, 1] [2023-11-24 23:53:04,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:53:04,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:53:04,834 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-24 23:53:04,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:04,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1799509165, now seen corresponding path program 5 times [2023-11-24 23:53:04,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:04,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208109898] [2023-11-24 23:53:04,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:04,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:04,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 23:53:04,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141359116] [2023-11-24 23:53:04,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:53:04,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:04,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:04,862 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:04,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:53:05,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-11-24 23:53:05,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:53:05,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-24 23:53:05,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4056 backedges. 4030 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:06,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:53:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4056 backedges. 3380 proven. 26 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-11-24 23:53:08,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:08,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208109898] [2023-11-24 23:53:08,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 23:53:08,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141359116] [2023-11-24 23:53:08,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141359116] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:53:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1364641548] [2023-11-24 23:53:08,092 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-24 23:53:08,092 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:53:08,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:53:08,093 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:53:08,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:53:08,539 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 60 for LOIs [2023-11-24 23:53:08,563 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:53:14,674 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6113#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~r~0#1| 2147483647) (<= 2147483648 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= 1 ~counter~0) (<= ~counter~0 20))' at error location [2023-11-24 23:53:14,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:53:14,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:53:14,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 56] total 68 [2023-11-24 23:53:14,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779760909] [2023-11-24 23:53:14,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 23:53:14,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-11-24 23:53:14,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:14,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-11-24 23:53:14,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1299, Invalid=4553, Unknown=0, NotChecked=0, Total=5852 [2023-11-24 23:53:14,683 INFO L87 Difference]: Start difference. First operand 279 states and 301 transitions. Second operand has 68 states, 68 states have (on average 4.779411764705882) internal successors, (325), 68 states have internal predecessors, (325), 32 states have call successors, (52), 27 states have call predecessors, (52), 27 states have return successors, (52), 32 states have call predecessors, (52), 32 states have call successors, (52) [2023-11-24 23:53:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:16,237 INFO L93 Difference]: Finished difference Result 313 states and 318 transitions. [2023-11-24 23:53:16,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-24 23:53:16,237 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.779411764705882) internal successors, (325), 68 states have internal predecessors, (325), 32 states have call successors, (52), 27 states have call predecessors, (52), 27 states have return successors, (52), 32 states have call predecessors, (52), 32 states have call successors, (52) Word has length 319 [2023-11-24 23:53:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:16,238 INFO L225 Difference]: With dead ends: 313 [2023-11-24 23:53:16,239 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 23:53:16,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 997 GetRequests, 785 SyntacticMatches, 95 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9601 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=3696, Invalid=10346, Unknown=0, NotChecked=0, Total=14042 [2023-11-24 23:53:16,247 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 65 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:16,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 895 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 23:53:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 23:53:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 23:53:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 23:53:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 23:53:16,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 319 [2023-11-24 23:53:16,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:16,249 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 23:53:16,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.779411764705882) internal successors, (325), 68 states have internal predecessors, (325), 32 states have call successors, (52), 27 states have call predecessors, (52), 27 states have return successors, (52), 32 states have call predecessors, (52), 32 states have call successors, (52) [2023-11-24 23:53:16,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 23:53:16,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 23:53:16,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2023-11-24 23:53:16,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2023-11-24 23:53:16,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2023-11-24 23:53:16,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2023-11-24 23:53:16,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2023-11-24 23:53:16,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2023-11-24 23:53:16,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2023-11-24 23:53:16,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2023-11-24 23:53:16,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:53:16,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:16,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-24 23:53:17,110 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2023-11-24 23:53:17,110 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2023-11-24 23:53:17,110 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-24 23:53:17,110 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2023-11-24 23:53:17,111 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2023-11-24 23:53:17,111 INFO L895 garLoopResultBuilder]: At program point L33-2(line 33) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|))) (let ((.cse1 (<= .cse0 2147483647)) (.cse2 (<= ~counter~0 20))) (or (and (<= 18 ~counter~0) (<= (+ .cse0 (* 16 |ULTIMATE.start_main_~r~0#1|)) 2147483583) .cse1 .cse2) (and (= 7 |ULTIMATE.start_main_~r~0#1|) .cse2 (<= 8 ~counter~0)) (and (= |ULTIMATE.start_main_~r~0#1| 4) .cse2 (<= 5 ~counter~0)) (and (= |ULTIMATE.start_main_~r~0#1| 11) (<= 12 ~counter~0) .cse2) (and (= |ULTIMATE.start_main_~r~0#1| 0) (= ~counter~0 1)) (and (<= (+ (* 14 |ULTIMATE.start_main_~r~0#1|) .cse0) 2147483598) .cse1 .cse2 (<= 19 ~counter~0)) (and (<= 17 ~counter~0) .cse1 (<= (+ .cse0 (* |ULTIMATE.start_main_~r~0#1| 18)) 2147483566) .cse2) (and (= |ULTIMATE.start_main_~r~0#1| 8) (<= 9 ~counter~0) .cse2) (and (<= 2 ~counter~0) .cse2 (= |ULTIMATE.start_main_~r~0#1| 1)) (and .cse2 (= 2 |ULTIMATE.start_main_~r~0#1|) (<= 3 ~counter~0)) (and (<= 11 ~counter~0) (= |ULTIMATE.start_main_~r~0#1| 10) .cse2) (and (= 5 |ULTIMATE.start_main_~r~0#1|) (<= 6 ~counter~0) .cse2) (and (= 9 |ULTIMATE.start_main_~r~0#1|) (<= 10 ~counter~0) .cse2) (and (= ~counter~0 20) .cse1 (<= (+ .cse0 (* |ULTIMATE.start_main_~r~0#1| 12)) 2147483611)) (and (<= (+ (* |ULTIMATE.start_main_~r~0#1| 20) .cse0) 2147483547) .cse1 .cse2 (<= 16 ~counter~0)) (and .cse2 (<= 4 ~counter~0) (= 3 |ULTIMATE.start_main_~r~0#1|)) (and (= 6 |ULTIMATE.start_main_~r~0#1|) .cse2 (<= 7 ~counter~0)) (and (<= 14 ~counter~0) .cse1 (<= (+ .cse0 (* |ULTIMATE.start_main_~r~0#1| 24)) 2147483503) .cse2) (and (<= (+ (* 22 |ULTIMATE.start_main_~r~0#1|) .cse0) 2147483526) .cse1 .cse2 (<= 15 ~counter~0)) (and (<= 13 ~counter~0) .cse2 (= |ULTIMATE.start_main_~r~0#1| 12))))) [2023-11-24 23:53:17,111 INFO L899 garLoopResultBuilder]: For program point L33-3(lines 32 39) no Hoare annotation was computed. [2023-11-24 23:53:17,111 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 38) no Hoare annotation was computed. [2023-11-24 23:53:17,111 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-24 23:53:17,111 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 41) no Hoare annotation was computed. [2023-11-24 23:53:17,111 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2023-11-24 23:53:17,112 INFO L899 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2023-11-24 23:53:17,112 INFO L899 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2023-11-24 23:53:17,112 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 32) no Hoare annotation was computed. [2023-11-24 23:53:17,112 INFO L899 garLoopResultBuilder]: For program point L32-2(line 32) no Hoare annotation was computed. [2023-11-24 23:53:17,112 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2023-11-24 23:53:17,112 INFO L899 garLoopResultBuilder]: For program point L32-3(lines 32 39) no Hoare annotation was computed. [2023-11-24 23:53:17,112 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 38) no Hoare annotation was computed. [2023-11-24 23:53:17,113 INFO L895 garLoopResultBuilder]: At program point L32-5(lines 32 39) the Hoare annotation is: (let ((.cse2 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|))) (let ((.cse1 (<= .cse2 2147483647)) (.cse0 (<= ~counter~0 20))) (or (and (= 7 |ULTIMATE.start_main_~r~0#1|) .cse0 (<= 7 ~counter~0)) (and (= ~counter~0 20) .cse1 (<= (+ (* |ULTIMATE.start_main_~r~0#1| 10) .cse2) 2147483622)) (and (= 9 |ULTIMATE.start_main_~r~0#1|) (<= 9 ~counter~0) .cse0) (and (<= 2 ~counter~0) .cse0 (= 2 |ULTIMATE.start_main_~r~0#1|)) (and (<= (+ (* 14 |ULTIMATE.start_main_~r~0#1|) .cse2) 2147483598) (<= 18 ~counter~0) .cse1 .cse0) (and (<= 17 ~counter~0) (<= (+ .cse2 (* 16 |ULTIMATE.start_main_~r~0#1|)) 2147483583) .cse1 .cse0) (and .cse1 (<= (+ .cse2 (* |ULTIMATE.start_main_~r~0#1| 18)) 2147483566) .cse0 (<= 16 ~counter~0)) (and .cse0 (= 3 |ULTIMATE.start_main_~r~0#1|) (<= 3 ~counter~0)) (and (= |ULTIMATE.start_main_~r~0#1| 0) (= ~counter~0 0)) (and (= |ULTIMATE.start_main_~r~0#1| 8) .cse0 (<= 8 ~counter~0)) (and (<= 11 ~counter~0) (= |ULTIMATE.start_main_~r~0#1| 11) .cse0) (and (= |ULTIMATE.start_main_~r~0#1| 10) (<= 10 ~counter~0) .cse0) (and (= |ULTIMATE.start_main_~r~0#1| 1) (= ~counter~0 1)) (and (= |ULTIMATE.start_main_~r~0#1| 4) .cse0 (<= 4 ~counter~0)) (and (<= (+ (* |ULTIMATE.start_main_~r~0#1| 20) .cse2) 2147483547) .cse1 .cse0 (<= 15 ~counter~0)) (and (<= 13 ~counter~0) .cse1 (<= (+ .cse2 (* |ULTIMATE.start_main_~r~0#1| 24)) 2147483503) .cse0) (and (= 6 |ULTIMATE.start_main_~r~0#1|) (<= 6 ~counter~0) .cse0) (and .cse1 (<= (+ .cse2 (* |ULTIMATE.start_main_~r~0#1| 12)) 2147483611) .cse0 (<= 19 ~counter~0)) (and (<= (+ (* 22 |ULTIMATE.start_main_~r~0#1|) .cse2) 2147483526) (<= 14 ~counter~0) .cse1 .cse0) (and (<= 12 ~counter~0) .cse0 (= |ULTIMATE.start_main_~r~0#1| 12)) (and (= 5 |ULTIMATE.start_main_~r~0#1|) .cse0 (<= 5 ~counter~0))))) [2023-11-24 23:53:17,113 INFO L899 garLoopResultBuilder]: For program point L32-6(lines 32 39) no Hoare annotation was computed. [2023-11-24 23:53:17,113 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2023-11-24 23:53:17,113 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 41) no Hoare annotation was computed. [2023-11-24 23:53:17,113 INFO L902 garLoopResultBuilder]: At program point L41-1(line 41) the Hoare annotation is: true [2023-11-24 23:53:17,113 INFO L899 garLoopResultBuilder]: For program point L41-2(line 41) no Hoare annotation was computed. [2023-11-24 23:53:17,114 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 16 22) no Hoare annotation was computed. [2023-11-24 23:53:17,114 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 16 22) the Hoare annotation is: true [2023-11-24 23:53:17,117 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1] [2023-11-24 23:53:17,119 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:53:17,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:53:17 BoogieIcfgContainer [2023-11-24 23:53:17,141 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:53:17,142 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:53:17,142 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:53:17,142 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:53:17,143 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:45" (3/4) ... [2023-11-24 23:53:17,144 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 23:53:17,147 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-24 23:53:17,150 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-24 23:53:17,151 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-24 23:53:17,151 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 23:53:17,151 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 23:53:17,268 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/witness.graphml [2023-11-24 23:53:17,269 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/bin/utaipan-verify-SwPr7d2a91/witness.yml [2023-11-24 23:53:17,269 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:53:17,270 INFO L158 Benchmark]: Toolchain (without parser) took 32898.96ms. Allocated memory was 151.0MB in the beginning and 264.2MB in the end (delta: 113.2MB). Free memory was 118.3MB in the beginning and 229.8MB in the end (delta: -111.6MB). Peak memory consumption was 156.1MB. Max. memory is 16.1GB. [2023-11-24 23:53:17,270 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 115.3MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:53:17,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.75ms. Allocated memory is still 151.0MB. Free memory was 118.3MB in the beginning and 107.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:53:17,271 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.64ms. Allocated memory is still 151.0MB. Free memory was 107.9MB in the beginning and 106.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:53:17,271 INFO L158 Benchmark]: Boogie Preprocessor took 21.84ms. Allocated memory is still 151.0MB. Free memory was 106.4MB in the beginning and 105.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:53:17,272 INFO L158 Benchmark]: RCFGBuilder took 332.41ms. Allocated memory is still 151.0MB. Free memory was 105.1MB in the beginning and 93.8MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 23:53:17,273 INFO L158 Benchmark]: TraceAbstraction took 32118.12ms. Allocated memory was 151.0MB in the beginning and 264.2MB in the end (delta: 113.2MB). Free memory was 92.7MB in the beginning and 80.8MB in the end (delta: 11.9MB). Peak memory consumption was 126.7MB. Max. memory is 16.1GB. [2023-11-24 23:53:17,274 INFO L158 Benchmark]: Witness Printer took 127.14ms. Allocated memory is still 264.2MB. Free memory was 80.8MB in the beginning and 229.8MB in the end (delta: -149.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:53:17,276 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 115.3MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 257.75ms. Allocated memory is still 151.0MB. Free memory was 118.3MB in the beginning and 107.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.64ms. Allocated memory is still 151.0MB. Free memory was 107.9MB in the beginning and 106.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.84ms. Allocated memory is still 151.0MB. Free memory was 106.4MB in the beginning and 105.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 332.41ms. Allocated memory is still 151.0MB. Free memory was 105.1MB in the beginning and 93.8MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 32118.12ms. Allocated memory was 151.0MB in the beginning and 264.2MB in the end (delta: 113.2MB). Free memory was 92.7MB in the beginning and 80.8MB in the end (delta: 11.9MB). Peak memory consumption was 126.7MB. Max. memory is 16.1GB. * Witness Printer took 127.14ms. Allocated memory is still 264.2MB. Free memory was 80.8MB in the beginning and 229.8MB in the end (delta: -149.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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 - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 32]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 38]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 38]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 32.0s, OverallIterations: 11, TraceHistogramMax: 27, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 531 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 523 mSDsluCounter, 2638 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2239 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2313 IncrementalHoareTripleChecker+Invalid, 2389 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 399 mSDtfsCounter, 2313 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1989 GetRequests, 1572 SyntacticMatches, 150 SemanticMatches, 267 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11030 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=279occurred in iteration=10, InterpolantAutomatonStates: 156, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 31 PreInvPairs, 73 NumberOfFragments, 564 HoareAnnotationTreeSize, 31 FomulaSimplifications, 1024 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 338 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 707 NumberOfCodeBlocks, 671 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 1263 ConstructedInterpolants, 0 QuantifiedInterpolants, 4739 SizeOfPredicates, 60 NumberOfNonLiveVariables, 1412 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 8462/10340 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 - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((7 == r) && (counter <= 20)) && (7 <= counter)) || (((counter == 20) && ((r * r) <= 2147483647)) && (((r * 10) + (r * r)) <= 2147483622))) || (((9 == r) && (9 <= counter)) && (counter <= 20))) || (((2 <= counter) && (counter <= 20)) && (2 == r))) || ((((((14 * r) + (r * r)) <= 2147483598) && (18 <= counter)) && ((r * r) <= 2147483647)) && (counter <= 20))) || ((((17 <= counter) && (((r * r) + (16 * r)) <= 2147483583)) && ((r * r) <= 2147483647)) && (counter <= 20))) || (((((r * r) <= 2147483647) && (((r * r) + (r * 18)) <= 2147483566)) && (counter <= 20)) && (16 <= counter))) || (((counter <= 20) && (3 == r)) && (3 <= counter))) || ((r == 0) && (counter == 0))) || (((r == 8) && (counter <= 20)) && (8 <= counter))) || (((11 <= counter) && (r == 11)) && (counter <= 20))) || (((r == 10) && (10 <= counter)) && (counter <= 20))) || ((r == 1) && (counter == 1))) || (((r == 4) && (counter <= 20)) && (4 <= counter))) || ((((((r * 20) + (r * r)) <= 2147483547) && ((r * r) <= 2147483647)) && (counter <= 20)) && (15 <= counter))) || ((((13 <= counter) && ((r * r) <= 2147483647)) && (((r * r) + (r * 24)) <= 2147483503)) && (counter <= 20))) || (((6 == r) && (6 <= counter)) && (counter <= 20))) || (((((r * r) <= 2147483647) && (((r * r) + (r * 12)) <= 2147483611)) && (counter <= 20)) && (19 <= counter))) || ((((((22 * r) + (r * r)) <= 2147483526) && (14 <= counter)) && ((r * r) <= 2147483647)) && (counter <= 20))) || (((12 <= counter) && (counter <= 20)) && (r == 12))) || (((5 == r) && (counter <= 20)) && (5 <= counter))) RESULT: Ultimate proved your program to be correct! [2023-11-24 23:53:17,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15162d9a-4982-4341-bc08-0a65799d9733/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 Result: TRUE