./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/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_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/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 64bit --witnessprinter.graph.data.programhash 70ea356a4fda57b451264a060e40bb07db2fe648bea4e3256fcecf71a5a8e7b7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:52:32,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:52:32,632 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:52:32,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:52:32,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:52:32,668 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:52:32,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:52:32,669 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:52:32,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:52:32,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:52:32,671 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:52:32,672 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:52:32,672 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:52:32,673 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:52:32,673 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:52:32,674 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:52:32,675 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:52:32,675 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:52:32,676 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:52:32,676 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:52:32,677 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:52:32,678 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:52:32,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:52:32,679 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:52:32,680 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:52:32,680 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:52:32,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:52:32,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:52:32,681 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:52:32,682 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:52:32,682 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:52:32,683 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:52:32,683 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:52:32,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:52:32,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:52:32,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:52:32,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:52:32,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:52:32,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:52:32,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:52:32,686 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:52:32,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:52:32,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:52:32,688 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:52:32,688 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:52:32,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:52:32,689 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_2d3e4ba7-314f-4d18-95d0-4306da017f79/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70ea356a4fda57b451264a060e40bb07db2fe648bea4e3256fcecf71a5a8e7b7 [2023-11-24 23:52:33,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:52:33,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:52:33,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:52:33,047 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:52:33,050 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:52:33,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c [2023-11-24 23:52:36,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:52:36,728 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:52:36,731 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c [2023-11-24 23:52:36,743 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/data/3e2a20114/6c6a8acf52c94b36b1dfd41e87709e7f/FLAG740e31ff7 [2023-11-24 23:52:36,772 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/data/3e2a20114/6c6a8acf52c94b36b1dfd41e87709e7f [2023-11-24 23:52:36,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:52:36,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:52:36,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:52:36,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:52:36,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:52:36,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:52:36" (1/1) ... [2023-11-24 23:52:36,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11820646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:36, skipping insertion in model container [2023-11-24 23:52:36,802 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:52:36" (1/1) ... [2023-11-24 23:52:36,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:52:37,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:52:37,078 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:52:37,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:52:37,120 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:52:37,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37 WrapperNode [2023-11-24 23:52:37,121 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:52:37,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:52:37,123 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:52:37,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:52:37,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37" (1/1) ... [2023-11-24 23:52:37,145 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37" (1/1) ... [2023-11-24 23:52:37,170 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2023-11-24 23:52:37,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:52:37,171 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:52:37,172 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:52:37,172 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:52:37,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37" (1/1) ... [2023-11-24 23:52:37,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37" (1/1) ... [2023-11-24 23:52:37,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37" (1/1) ... [2023-11-24 23:52:37,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37" (1/1) ... [2023-11-24 23:52:37,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37" (1/1) ... [2023-11-24 23:52:37,205 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37" (1/1) ... [2023-11-24 23:52:37,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37" (1/1) ... [2023-11-24 23:52:37,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37" (1/1) ... [2023-11-24 23:52:37,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:52:37,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:52:37,220 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:52:37,220 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:52:37,221 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37" (1/1) ... [2023-11-24 23:52:37,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:52:37,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:37,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:52:37,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:52:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:52:37,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:52:37,410 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:52:37,413 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:52:37,566 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:52:37,598 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:52:37,599 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:52:37,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:37 BoogieIcfgContainer [2023-11-24 23:52:37,601 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:52:37,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:52:37,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:52:37,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:52:37,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:52:36" (1/3) ... [2023-11-24 23:52:37,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d4a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:52:37, skipping insertion in model container [2023-11-24 23:52:37,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:52:37" (2/3) ... [2023-11-24 23:52:37,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d4a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:52:37, skipping insertion in model container [2023-11-24 23:52:37,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:52:37" (3/3) ... [2023-11-24 23:52:37,614 INFO L112 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c [2023-11-24 23:52:37,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:52:37,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-24 23:52:37,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:52:37,752 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;@a59f7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:52:37,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-24 23:52:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 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 23:52:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:52:37,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:37,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:52:37,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:37,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash 69427029, now seen corresponding path program 1 times [2023-11-24 23:52:37,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:37,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364980236] [2023-11-24 23:52:37,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:37,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:38,106 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 23:52:38,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364980236] [2023-11-24 23:52:38,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364980236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:38,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:38,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:52:38,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578549828] [2023-11-24 23:52:38,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:38,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:38,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:38,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:38,185 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:38,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:38,309 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-11-24 23:52:38,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:38,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 23:52:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:38,326 INFO L225 Difference]: With dead ends: 31 [2023-11-24 23:52:38,327 INFO L226 Difference]: Without dead ends: 26 [2023-11-24 23:52:38,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:52:38,338 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:38,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-24 23:52:38,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-11-24 23:52:38,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 states have internal predecessors, (28), 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 23:52:38,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-11-24 23:52:38,393 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2023-11-24 23:52:38,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:38,394 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-11-24 23:52:38,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-11-24 23:52:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:52:38,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:38,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 23:52:38,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:52:38,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:38,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:38,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2142729346, now seen corresponding path program 1 times [2023-11-24 23:52:38,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:38,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731970550] [2023-11-24 23:52:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:38,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:38,524 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 23:52:38,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:38,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731970550] [2023-11-24 23:52:38,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731970550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:38,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:38,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:52:38,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574426486] [2023-11-24 23:52:38,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:38,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:38,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:38,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:38,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:38,530 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:38,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:38,566 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2023-11-24 23:52:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:38,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 23:52:38,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:38,569 INFO L225 Difference]: With dead ends: 40 [2023-11-24 23:52:38,569 INFO L226 Difference]: Without dead ends: 38 [2023-11-24 23:52:38,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:52:38,572 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:38,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:38,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-24 23:52:38,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2023-11-24 23:52:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 35 states have internal predecessors, (47), 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 23:52:38,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2023-11-24 23:52:38,583 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 6 [2023-11-24 23:52:38,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:38,584 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2023-11-24 23:52:38,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2023-11-24 23:52:38,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:52:38,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:38,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:38,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:52:38,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:38,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2000100226, now seen corresponding path program 1 times [2023-11-24 23:52:38,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:38,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020036885] [2023-11-24 23:52:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:38,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:38,640 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 23:52:38,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:38,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020036885] [2023-11-24 23:52:38,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020036885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:38,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:38,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:52:38,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615284865] [2023-11-24 23:52:38,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:38,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:38,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:38,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:38,645 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 23:52:38,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:38,663 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2023-11-24 23:52:38,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:38,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 23:52:38,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:38,666 INFO L225 Difference]: With dead ends: 36 [2023-11-24 23:52:38,666 INFO L226 Difference]: Without dead ends: 35 [2023-11-24 23:52:38,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:52:38,669 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:38,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-24 23:52:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-24 23:52:38,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 34 states have internal predecessors, (44), 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 23:52:38,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2023-11-24 23:52:38,680 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 7 [2023-11-24 23:52:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:38,681 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2023-11-24 23:52:38,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 23:52:38,682 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2023-11-24 23:52:38,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:52:38,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:38,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:38,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 23:52:38,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:38,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:38,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1873564800, now seen corresponding path program 1 times [2023-11-24 23:52:38,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:38,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246269826] [2023-11-24 23:52:38,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:38,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:38,746 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 23:52:38,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:38,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246269826] [2023-11-24 23:52:38,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246269826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:38,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:38,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:52:38,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835203915] [2023-11-24 23:52:38,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:38,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:52:38,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:38,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:52:38,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:52:38,750 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:38,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:38,774 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2023-11-24 23:52:38,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:52:38,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-24 23:52:38,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:38,776 INFO L225 Difference]: With dead ends: 41 [2023-11-24 23:52:38,776 INFO L226 Difference]: Without dead ends: 40 [2023-11-24 23:52:38,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 23:52:38,779 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:38,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-24 23:52:38,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-24 23:52:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.4) internal successors, (49), 39 states have internal predecessors, (49), 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 23:52:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2023-11-24 23:52:38,790 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 8 [2023-11-24 23:52:38,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:38,791 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2023-11-24 23:52:38,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2023-11-24 23:52:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:52:38,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:38,793 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:38,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 23:52:38,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:38,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:38,794 INFO L85 PathProgramCache]: Analyzing trace with hash 799855624, now seen corresponding path program 1 times [2023-11-24 23:52:38,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:38,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900165009] [2023-11-24 23:52:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:38,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:38,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:38,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900165009] [2023-11-24 23:52:38,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900165009] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:38,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207053633] [2023-11-24 23:52:38,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:38,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:38,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:38,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:38,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:52:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:39,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:52:39,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:39,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:39,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207053633] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:39,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [548063045] [2023-11-24 23:52:39,315 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-24 23:52:39,316 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:39,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:39,328 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:39,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:39,723 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:40,039 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '409#(and (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_20| Int)) (and (<= |v_ULTIMATE.start_main_#t~nondet3#1_20| 2147483647) (not (= |v_ULTIMATE.start_main_#t~nondet3#1_20| 0)) (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet3#1_20| 2147483648)))) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= (+ 2147483650 |ULTIMATE.start_main_~a~0#1|) 0))' at error location [2023-11-24 23:52:40,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:40,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:40,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-24 23:52:40,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848955370] [2023-11-24 23:52:40,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:40,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:52:40,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:40,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:52:40,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-24 23:52:40,043 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 23:52:40,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:40,095 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2023-11-24 23:52:40,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:52:40,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 23:52:40,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:40,098 INFO L225 Difference]: With dead ends: 81 [2023-11-24 23:52:40,098 INFO L226 Difference]: Without dead ends: 79 [2023-11-24 23:52:40,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-24 23:52:40,100 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:40,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 25 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:40,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-24 23:52:40,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 50. [2023-11-24 23:52:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 49 states have internal predecessors, (62), 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 23:52:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2023-11-24 23:52:40,110 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 11 [2023-11-24 23:52:40,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:40,111 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2023-11-24 23:52:40,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 23:52:40,111 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2023-11-24 23:52:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:52:40,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:40,112 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:40,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-24 23:52:40,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:40,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:40,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:40,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1616469403, now seen corresponding path program 1 times [2023-11-24 23:52:40,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:40,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801148876] [2023-11-24 23:52:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:40,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:40,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:40,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:40,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801148876] [2023-11-24 23:52:40,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801148876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:40,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605753532] [2023-11-24 23:52:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:40,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:40,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:40,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:40,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:52:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:40,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:52:40,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:40,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605753532] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:40,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1711708656] [2023-11-24 23:52:40,527 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:40,527 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:40,527 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:40,528 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:40,528 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:40,882 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:41,103 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '635#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-24 23:52:41,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:41,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:41,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-24 23:52:41,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288126009] [2023-11-24 23:52:41,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:41,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:52:41,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:41,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:52:41,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:52:41,106 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:41,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:41,161 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2023-11-24 23:52:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:52:41,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-24 23:52:41,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:41,163 INFO L225 Difference]: With dead ends: 124 [2023-11-24 23:52:41,163 INFO L226 Difference]: Without dead ends: 122 [2023-11-24 23:52:41,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:52:41,165 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:41,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 37 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:41,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-24 23:52:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 99. [2023-11-24 23:52:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.3368421052631578) internal successors, (127), 98 states have internal predecessors, (127), 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 23:52:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2023-11-24 23:52:41,179 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 12 [2023-11-24 23:52:41,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:41,180 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2023-11-24 23:52:41,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:41,180 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2023-11-24 23:52:41,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:52:41,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:41,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-24 23:52:41,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:41,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:41,387 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:41,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:41,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1351066791, now seen corresponding path program 1 times [2023-11-24 23:52:41,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:41,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752488206] [2023-11-24 23:52:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:41,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:41,482 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 23:52:41,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752488206] [2023-11-24 23:52:41,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752488206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849579359] [2023-11-24 23:52:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:41,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:41,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:41,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:41,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 23:52:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:41,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:52:41,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:41,560 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 23:52:41,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:41,594 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 23:52:41,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849579359] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:41,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1013912414] [2023-11-24 23:52:41,599 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:41,599 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:41,599 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:41,599 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:41,600 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:41,874 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:42,104 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '977#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-24 23:52:42,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:42,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:42,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-24 23:52:42,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677442139] [2023-11-24 23:52:42,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:42,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 23:52:42,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:42,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 23:52:42,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:52:42,106 INFO L87 Difference]: Start difference. First operand 99 states and 127 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:42,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:42,158 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2023-11-24 23:52:42,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 23:52:42,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-24 23:52:42,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:42,161 INFO L225 Difference]: With dead ends: 212 [2023-11-24 23:52:42,161 INFO L226 Difference]: Without dead ends: 211 [2023-11-24 23:52:42,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-24 23:52:42,163 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:42,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 43 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:52:42,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-24 23:52:42,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2023-11-24 23:52:42,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 205 states have (on average 1.2292682926829268) internal successors, (252), 208 states have internal predecessors, (252), 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 23:52:42,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 252 transitions. [2023-11-24 23:52:42,184 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 252 transitions. Word has length 14 [2023-11-24 23:52:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:42,184 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 252 transitions. [2023-11-24 23:52:42,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:52:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 252 transitions. [2023-11-24 23:52:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:52:42,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:42,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1] [2023-11-24 23:52:42,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:42,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-24 23:52:42,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:42,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash 541767483, now seen corresponding path program 1 times [2023-11-24 23:52:42,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:42,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014543481] [2023-11-24 23:52:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:42,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:42,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:42,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014543481] [2023-11-24 23:52:42,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014543481] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:42,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959805148] [2023-11-24 23:52:42,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:42,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:42,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:42,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:42,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 23:52:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:42,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:52:42,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:42,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:42,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959805148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:42,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1407014915] [2023-11-24 23:52:42,596 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:42,597 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:42,597 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:42,597 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:42,597 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:42,712 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:42,945 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1561#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~max~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-24 23:52:42,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:42,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:42,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-24 23:52:42,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820048536] [2023-11-24 23:52:42,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:42,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 23:52:42,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:42,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 23:52:42,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:52:42,950 INFO L87 Difference]: Start difference. First operand 209 states and 252 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 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 23:52:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:43,050 INFO L93 Difference]: Finished difference Result 410 states and 524 transitions. [2023-11-24 23:52:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 23:52:43,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 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 17 [2023-11-24 23:52:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:43,053 INFO L225 Difference]: With dead ends: 410 [2023-11-24 23:52:43,054 INFO L226 Difference]: Without dead ends: 409 [2023-11-24 23:52:43,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-24 23:52:43,056 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:43,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 44 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-24 23:52:43,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 341. [2023-11-24 23:52:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 337 states have (on average 1.2640949554896141) internal successors, (426), 340 states have internal predecessors, (426), 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 23:52:43,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 426 transitions. [2023-11-24 23:52:43,108 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 426 transitions. Word has length 17 [2023-11-24 23:52:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:43,109 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 426 transitions. [2023-11-24 23:52:43,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 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 23:52:43,109 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 426 transitions. [2023-11-24 23:52:43,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-24 23:52:43,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:43,118 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2023-11-24 23:52:43,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:43,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-24 23:52:43,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:43,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:43,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1081708646, now seen corresponding path program 2 times [2023-11-24 23:52:43,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:43,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937057485] [2023-11-24 23:52:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:43,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:43,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:43,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937057485] [2023-11-24 23:52:43,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937057485] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:43,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714097695] [2023-11-24 23:52:43,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:52:43,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:43,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:43,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:43,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 23:52:43,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-24 23:52:43,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:52:43,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:52:43,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:43,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:43,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714097695] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:43,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [42592528] [2023-11-24 23:52:43,645 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:43,645 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:43,646 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:43,646 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:43,646 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:43,834 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:44,052 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2600#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-24 23:52:44,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:44,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:44,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-24 23:52:44,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522053964] [2023-11-24 23:52:44,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:44,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:52:44,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:44,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:52:44,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:52:44,054 INFO L87 Difference]: Start difference. First operand 341 states and 426 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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 23:52:44,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:44,208 INFO L93 Difference]: Finished difference Result 886 states and 1203 transitions. [2023-11-24 23:52:44,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:52:44,209 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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 30 [2023-11-24 23:52:44,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:44,215 INFO L225 Difference]: With dead ends: 886 [2023-11-24 23:52:44,215 INFO L226 Difference]: Without dead ends: 884 [2023-11-24 23:52:44,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:52:44,217 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 50 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:44,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 77 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:44,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2023-11-24 23:52:44,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 581. [2023-11-24 23:52:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 577 states have (on average 1.2807625649913346) internal successors, (739), 580 states have internal predecessors, (739), 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 23:52:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 739 transitions. [2023-11-24 23:52:44,265 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 739 transitions. Word has length 30 [2023-11-24 23:52:44,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:44,266 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 739 transitions. [2023-11-24 23:52:44,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 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 23:52:44,266 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 739 transitions. [2023-11-24 23:52:44,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-24 23:52:44,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:44,268 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1] [2023-11-24 23:52:44,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:44,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-24 23:52:44,474 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:44,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:44,475 INFO L85 PathProgramCache]: Analyzing trace with hash -139921252, now seen corresponding path program 2 times [2023-11-24 23:52:44,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:44,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411378146] [2023-11-24 23:52:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:44,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:44,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411378146] [2023-11-24 23:52:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411378146] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:44,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965179757] [2023-11-24 23:52:44,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:52:44,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:44,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:44,578 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:44,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 23:52:44,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-24 23:52:44,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:52:44,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:52:44,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:44,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:44,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965179757] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:44,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [381157855] [2023-11-24 23:52:44,804 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:44,804 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:44,805 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:44,805 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:44,805 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:44,967 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:45,177 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4465#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-24 23:52:45,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:45,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:45,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-24 23:52:45,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273195313] [2023-11-24 23:52:45,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:45,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 23:52:45,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:45,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 23:52:45,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:52:45,182 INFO L87 Difference]: Start difference. First operand 581 states and 739 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 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 23:52:45,324 INFO L93 Difference]: Finished difference Result 1687 states and 2177 transitions. [2023-11-24 23:52:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 23:52:45,324 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 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 32 [2023-11-24 23:52:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:45,334 INFO L225 Difference]: With dead ends: 1687 [2023-11-24 23:52:45,334 INFO L226 Difference]: Without dead ends: 1686 [2023-11-24 23:52:45,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-24 23:52:45,337 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:45,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 86 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2023-11-24 23:52:45,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1682. [2023-11-24 23:52:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1678 states have (on average 1.1889153754469606) internal successors, (1995), 1681 states have internal predecessors, (1995), 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 23:52:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 1995 transitions. [2023-11-24 23:52:45,427 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 1995 transitions. Word has length 32 [2023-11-24 23:52:45,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:45,427 INFO L495 AbstractCegarLoop]: Abstraction has 1682 states and 1995 transitions. [2023-11-24 23:52:45,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 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 23:52:45,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 1995 transitions. [2023-11-24 23:52:45,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-24 23:52:45,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:45,430 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1] [2023-11-24 23:52:45,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:45,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 23:52:45,636 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:45,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash 152586887, now seen corresponding path program 2 times [2023-11-24 23:52:45,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:45,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478684899] [2023-11-24 23:52:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:45,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:45,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:45,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478684899] [2023-11-24 23:52:45,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478684899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:45,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061671284] [2023-11-24 23:52:45,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 23:52:45,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:45,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:45,786 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:45,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 23:52:45,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-24 23:52:45,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:52:45,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:52:45,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:45,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:46,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061671284] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:46,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [652470763] [2023-11-24 23:52:46,049 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:46,049 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:46,049 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:46,050 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:46,050 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:46,151 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:46,379 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8549#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~max~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-24 23:52:46,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:46,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:46,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-24 23:52:46,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842686422] [2023-11-24 23:52:46,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:46,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-24 23:52:46,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:46,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-24 23:52:46,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-11-24 23:52:46,381 INFO L87 Difference]: Start difference. First operand 1682 states and 1995 transitions. Second operand has 16 states, 15 states have (on average 5.4) internal successors, (81), 16 states have internal predecessors, (81), 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 23:52:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:46,670 INFO L93 Difference]: Finished difference Result 3500 states and 4318 transitions. [2023-11-24 23:52:46,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-24 23:52:46,671 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 16 states have internal predecessors, (81), 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 41 [2023-11-24 23:52:46,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:46,689 INFO L225 Difference]: With dead ends: 3500 [2023-11-24 23:52:46,689 INFO L226 Difference]: Without dead ends: 3499 [2023-11-24 23:52:46,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-11-24 23:52:46,693 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 120 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:46,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 92 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:46,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2023-11-24 23:52:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 2129. [2023-11-24 23:52:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2125 states have (on average 1.207529411764706) internal successors, (2566), 2128 states have internal predecessors, (2566), 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 23:52:46,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 2566 transitions. [2023-11-24 23:52:46,855 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 2566 transitions. Word has length 41 [2023-11-24 23:52:46,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:46,855 INFO L495 AbstractCegarLoop]: Abstraction has 2129 states and 2566 transitions. [2023-11-24 23:52:46,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.4) internal successors, (81), 16 states have internal predecessors, (81), 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 23:52:46,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 2566 transitions. [2023-11-24 23:52:46,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-24 23:52:46,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:46,862 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1] [2023-11-24 23:52:46,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:47,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-24 23:52:47,068 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:47,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:47,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1666232252, now seen corresponding path program 3 times [2023-11-24 23:52:47,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:47,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542555243] [2023-11-24 23:52:47,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:47,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:47,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:47,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542555243] [2023-11-24 23:52:47,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542555243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:47,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910710413] [2023-11-24 23:52:47,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:52:47,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:47,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:47,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:47,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 23:52:47,434 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:52:47,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:52:47,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:52:47,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:47,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:47,820 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:47,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910710413] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:47,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [183828837] [2023-11-24 23:52:47,822 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:47,823 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:47,823 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:47,823 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:47,824 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:48,059 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:48,302 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15327#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-24 23:52:48,302 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:48,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:48,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-24 23:52:48,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662119231] [2023-11-24 23:52:48,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:48,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-24 23:52:48,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:48,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-24 23:52:48,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=632, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:52:48,306 INFO L87 Difference]: Start difference. First operand 2129 states and 2566 transitions. Second operand has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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 23:52:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:48,803 INFO L93 Difference]: Finished difference Result 5682 states and 7447 transitions. [2023-11-24 23:52:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-24 23:52:48,804 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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 66 [2023-11-24 23:52:48,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:48,835 INFO L225 Difference]: With dead ends: 5682 [2023-11-24 23:52:48,836 INFO L226 Difference]: Without dead ends: 5680 [2023-11-24 23:52:48,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=298, Invalid=632, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:52:48,842 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 216 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:48,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 157 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:52:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5680 states. [2023-11-24 23:52:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5680 to 3159. [2023-11-24 23:52:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3159 states, 3155 states have (on average 1.2294770206022188) internal successors, (3879), 3158 states have internal predecessors, (3879), 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 23:52:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3159 states to 3159 states and 3879 transitions. [2023-11-24 23:52:49,066 INFO L78 Accepts]: Start accepts. Automaton has 3159 states and 3879 transitions. Word has length 66 [2023-11-24 23:52:49,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:49,067 INFO L495 AbstractCegarLoop]: Abstraction has 3159 states and 3879 transitions. [2023-11-24 23:52:49,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.695652173913044) internal successors, (131), 24 states have internal predecessors, (131), 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 23:52:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 3159 states and 3879 transitions. [2023-11-24 23:52:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-24 23:52:49,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:49,072 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 1, 1, 1] [2023-11-24 23:52:49,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:49,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-24 23:52:49,280 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:49,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash 773609158, now seen corresponding path program 3 times [2023-11-24 23:52:49,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:49,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894464799] [2023-11-24 23:52:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:49,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:49,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:49,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894464799] [2023-11-24 23:52:49,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894464799] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:49,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987399942] [2023-11-24 23:52:49,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:52:49,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:49,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:49,515 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:49,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:52:49,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:52:49,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:52:49,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 23:52:49,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:49,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:50,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987399942] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:50,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [293213522] [2023-11-24 23:52:50,018 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:50,019 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:50,019 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:50,019 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:50,019 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:50,190 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:50,428 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25752#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-24 23:52:50,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:50,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:50,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-24 23:52:50,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663397895] [2023-11-24 23:52:50,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:50,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-24 23:52:50,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:50,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-24 23:52:50,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=633, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:52:50,433 INFO L87 Difference]: Start difference. First operand 3159 states and 3879 transitions. Second operand has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 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 23:52:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:51,260 INFO L93 Difference]: Finished difference Result 12415 states and 15746 transitions. [2023-11-24 23:52:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-24 23:52:51,261 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 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 68 [2023-11-24 23:52:51,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:51,327 INFO L225 Difference]: With dead ends: 12415 [2023-11-24 23:52:51,328 INFO L226 Difference]: Without dead ends: 12414 [2023-11-24 23:52:51,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=633, Unknown=0, NotChecked=0, Total=930 [2023-11-24 23:52:51,341 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 162 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:51,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 167 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:52:51,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12414 states. [2023-11-24 23:52:52,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12414 to 12406. [2023-11-24 23:52:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12406 states, 12402 states have (on average 1.1599741977100468) internal successors, (14386), 12405 states have internal predecessors, (14386), 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 23:52:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12406 states to 12406 states and 14386 transitions. [2023-11-24 23:52:52,254 INFO L78 Accepts]: Start accepts. Automaton has 12406 states and 14386 transitions. Word has length 68 [2023-11-24 23:52:52,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:52,256 INFO L495 AbstractCegarLoop]: Abstraction has 12406 states and 14386 transitions. [2023-11-24 23:52:52,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.869565217391305) internal successors, (135), 24 states have internal predecessors, (135), 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 23:52:52,256 INFO L276 IsEmpty]: Start isEmpty. Operand 12406 states and 14386 transitions. [2023-11-24 23:52:52,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-24 23:52:52,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:52,266 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1] [2023-11-24 23:52:52,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-24 23:52:52,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-24 23:52:52,472 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:52,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:52,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1333197537, now seen corresponding path program 3 times [2023-11-24 23:52:52,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:52,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220231125] [2023-11-24 23:52:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:52,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:52,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:52,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220231125] [2023-11-24 23:52:52,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220231125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:52,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431390470] [2023-11-24 23:52:52,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-24 23:52:52,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:52,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:52,935 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:52,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:52:53,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-24 23:52:53,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:52:53,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-24 23:52:53,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:53,164 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:53,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:53,713 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:53,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431390470] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:53,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1395587211] [2023-11-24 23:52:53,715 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:53,716 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:53,716 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:53,716 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:53,716 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:52:53,796 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:52:54,129 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '54434#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~max~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= (+ |ULTIMATE.start_main_~a~0#1| 2147483648) 0))' at error location [2023-11-24 23:52:54,130 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:52:54,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:52:54,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2023-11-24 23:52:54,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122599864] [2023-11-24 23:52:54,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:52:54,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-24 23:52:54,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:52:54,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-24 23:52:54,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=962, Unknown=0, NotChecked=0, Total=1482 [2023-11-24 23:52:54,135 INFO L87 Difference]: Start difference. First operand 12406 states and 14386 transitions. Second operand has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 32 states have internal predecessors, (177), 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 23:52:55,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:55,590 INFO L93 Difference]: Finished difference Result 29252 states and 34995 transitions. [2023-11-24 23:52:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-24 23:52:55,591 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 32 states have internal predecessors, (177), 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 89 [2023-11-24 23:52:55,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:55,671 INFO L225 Difference]: With dead ends: 29252 [2023-11-24 23:52:55,672 INFO L226 Difference]: Without dead ends: 29251 [2023-11-24 23:52:55,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=520, Invalid=962, Unknown=0, NotChecked=0, Total=1482 [2023-11-24 23:52:55,696 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 412 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:55,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 188 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:52:55,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29251 states. [2023-11-24 23:52:57,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29251 to 14277. [2023-11-24 23:52:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14277 states, 14273 states have (on average 1.1710922721221888) internal successors, (16715), 14276 states have internal predecessors, (16715), 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 23:52:57,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14277 states to 14277 states and 16715 transitions. [2023-11-24 23:52:57,252 INFO L78 Accepts]: Start accepts. Automaton has 14277 states and 16715 transitions. Word has length 89 [2023-11-24 23:52:57,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:57,253 INFO L495 AbstractCegarLoop]: Abstraction has 14277 states and 16715 transitions. [2023-11-24 23:52:57,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.709677419354839) internal successors, (177), 32 states have internal predecessors, (177), 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 23:52:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 14277 states and 16715 transitions. [2023-11-24 23:52:57,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-24 23:52:57,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:57,290 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1] [2023-11-24 23:52:57,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:52:57,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:57,498 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:52:57,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:57,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2039147160, now seen corresponding path program 4 times [2023-11-24 23:52:57,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:52:57,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35441637] [2023-11-24 23:52:57,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:57,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:52:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:58,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:58,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:52:58,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35441637] [2023-11-24 23:52:58,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35441637] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:52:58,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581450677] [2023-11-24 23:52:58,269 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:52:58,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:52:58,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:52:58,272 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:52:58,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-24 23:52:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:58,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 23:52:58,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:58,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:52:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:52:59,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581450677] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:52:59,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [919785082] [2023-11-24 23:52:59,755 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:52:59,755 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:52:59,755 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:52:59,756 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:52:59,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:53:00,007 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:53:00,304 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '104469#(and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~a~0#1|))' at error location [2023-11-24 23:53:00,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:53:00,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:53:00,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-11-24 23:53:00,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995372957] [2023-11-24 23:53:00,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:53:00,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-24 23:53:00,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:00,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-24 23:53:00,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2023-11-24 23:53:00,309 INFO L87 Difference]: Start difference. First operand 14277 states and 16715 transitions. Second operand has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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 23:53:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:02,214 INFO L93 Difference]: Finished difference Result 40492 states and 51102 transitions. [2023-11-24 23:53:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-24 23:53:02,215 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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 138 [2023-11-24 23:53:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:02,354 INFO L225 Difference]: With dead ends: 40492 [2023-11-24 23:53:02,354 INFO L226 Difference]: Without dead ends: 40490 [2023-11-24 23:53:02,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1153, Invalid=1817, Unknown=0, NotChecked=0, Total=2970 [2023-11-24 23:53:02,369 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 483 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:02,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 332 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 23:53:02,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40490 states. [2023-11-24 23:53:04,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40490 to 18733. [2023-11-24 23:53:04,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18733 states, 18729 states have (on average 1.1907736665064872) internal successors, (22302), 18732 states have internal predecessors, (22302), 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 23:53:04,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18733 states to 18733 states and 22302 transitions. [2023-11-24 23:53:04,345 INFO L78 Accepts]: Start accepts. Automaton has 18733 states and 22302 transitions. Word has length 138 [2023-11-24 23:53:04,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:04,346 INFO L495 AbstractCegarLoop]: Abstraction has 18733 states and 22302 transitions. [2023-11-24 23:53:04,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.851063829787234) internal successors, (275), 48 states have internal predecessors, (275), 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 23:53:04,347 INFO L276 IsEmpty]: Start isEmpty. Operand 18733 states and 22302 transitions. [2023-11-24 23:53:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-24 23:53:04,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:04,375 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 1, 1, 1] [2023-11-24 23:53:04,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-24 23:53:04,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:04,580 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:53:04,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:04,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1115335706, now seen corresponding path program 4 times [2023-11-24 23:53:04,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:04,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245717194] [2023-11-24 23:53:04,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:04,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:05,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:05,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245717194] [2023-11-24 23:53:05,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245717194] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:05,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089990606] [2023-11-24 23:53:05,281 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:53:05,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:05,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:05,282 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:05,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-24 23:53:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:05,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 23:53:05,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:05,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:53:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:06,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089990606] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:53:06,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [840007957] [2023-11-24 23:53:06,573 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-24 23:53:06,573 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:53:06,573 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:53:06,574 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:53:06,574 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-24 23:53:06,801 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-24 23:53:07,081 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '172208#(and (<= |ULTIMATE.start_main_~a~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|) (<= 2147483647 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-24 23:53:07,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-24 23:53:07,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 23:53:07,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-11-24 23:53:07,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825369490] [2023-11-24 23:53:07,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 23:53:07,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-24 23:53:07,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:07,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-24 23:53:07,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1154, Invalid=1816, Unknown=0, NotChecked=0, Total=2970 [2023-11-24 23:53:07,086 INFO L87 Difference]: Start difference. First operand 18733 states and 22302 transitions. Second operand has 48 states, 47 states have (on average 5.9361702127659575) internal successors, (279), 48 states have internal predecessors, (279), 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 23:53:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:12,723 INFO L93 Difference]: Finished difference Result 95253 states and 119315 transitions. [2023-11-24 23:53:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-24 23:53:12,724 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.9361702127659575) internal successors, (279), 48 states have internal predecessors, (279), 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 140 [2023-11-24 23:53:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:12,804 INFO L225 Difference]: With dead ends: 95253 [2023-11-24 23:53:12,805 INFO L226 Difference]: Without dead ends: 95252 [2023-11-24 23:53:12,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1154, Invalid=1816, Unknown=0, NotChecked=0, Total=2970 [2023-11-24 23:53:12,825 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 513 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:12,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 317 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:53:12,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95252 states. [2023-11-24 23:53:19,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95252 to 95236. [2023-11-24 23:53:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95236 states, 95232 states have (on average 1.1432291666666667) internal successors, (108872), 95235 states have internal predecessors, (108872), 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 23:53:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95236 states to 95236 states and 108872 transitions. [2023-11-24 23:53:20,029 INFO L78 Accepts]: Start accepts. Automaton has 95236 states and 108872 transitions. Word has length 140 [2023-11-24 23:53:20,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:20,029 INFO L495 AbstractCegarLoop]: Abstraction has 95236 states and 108872 transitions. [2023-11-24 23:53:20,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.9361702127659575) internal successors, (279), 48 states have internal predecessors, (279), 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 23:53:20,029 INFO L276 IsEmpty]: Start isEmpty. Operand 95236 states and 108872 transitions. [2023-11-24 23:53:20,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-24 23:53:20,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:20,137 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1] [2023-11-24 23:53:20,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-24 23:53:20,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:20,343 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-24 23:53:20,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:20,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1133562447, now seen corresponding path program 4 times [2023-11-24 23:53:20,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:20,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756269896] [2023-11-24 23:53:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:20,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:21,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:21,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756269896] [2023-11-24 23:53:21,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756269896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:21,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544901032] [2023-11-24 23:53:21,922 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-24 23:53:21,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:21,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:21,924 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:21,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d3e4ba7-314f-4d18-95d0-4306da017f79/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-24 23:53:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:22,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-24 23:53:22,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:53:22,303 INFO L327 TraceCheckSpWp]: Computing backward predicates...