./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:23:37,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:23:37,909 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 05:23:37,917 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:23:37,918 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:23:37,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:23:37,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:23:37,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:23:37,964 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:23:37,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:23:37,970 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:23:37,971 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:23:37,972 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:23:37,974 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:23:37,974 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:23:37,975 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:23:37,975 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:23:37,976 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:23:37,976 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:23:37,977 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:23:37,977 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:23:37,978 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:23:37,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:23:37,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:23:37,980 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:23:37,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:23:37,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:23:37,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:23:37,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:23:37,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:23:37,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:23:37,984 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:23:37,984 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:23:37,985 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:23:37,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:23:37,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:23:37,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:23:37,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:23:37,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:23:37,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:23:37,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:23:37,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:23:37,987 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:23:37,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:23:37,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:23:37,989 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:23:37,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:23:37,989 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_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 366d45071e2a444aa552f231e24508af3eb704e415c6b738128a0398e54b53a7 [2023-11-19 05:23:38,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:23:38,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:23:38,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:23:38,363 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:23:38,363 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:23:38,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2023-11-19 05:23:41,602 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:23:41,804 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:23:41,805 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/sv-benchmarks/c/loop-zilu/benchmark38_conjunctive.i [2023-11-19 05:23:41,814 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/data/d25020e6c/03531f7c8ac64d2182f6fc94344bdf26/FLAG886925564 [2023-11-19 05:23:41,832 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/data/d25020e6c/03531f7c8ac64d2182f6fc94344bdf26 [2023-11-19 05:23:41,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:23:41,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:23:41,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:23:41,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:23:41,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:23:41,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:23:41" (1/1) ... [2023-11-19 05:23:41,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354f2bc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:41, skipping insertion in model container [2023-11-19 05:23:41,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:23:41" (1/1) ... [2023-11-19 05:23:41,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:23:42,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:23:42,087 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:23:42,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:23:42,122 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:23:42,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42 WrapperNode [2023-11-19 05:23:42,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:23:42,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:23:42,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:23:42,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:23:42,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42" (1/1) ... [2023-11-19 05:23:42,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42" (1/1) ... [2023-11-19 05:23:42,167 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2023-11-19 05:23:42,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:23:42,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:23:42,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:23:42,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:23:42,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42" (1/1) ... [2023-11-19 05:23:42,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42" (1/1) ... [2023-11-19 05:23:42,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42" (1/1) ... [2023-11-19 05:23:42,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42" (1/1) ... [2023-11-19 05:23:42,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42" (1/1) ... [2023-11-19 05:23:42,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42" (1/1) ... [2023-11-19 05:23:42,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42" (1/1) ... [2023-11-19 05:23:42,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42" (1/1) ... [2023-11-19 05:23:42,214 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:23:42,215 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:23:42,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:23:42,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:23:42,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42" (1/1) ... [2023-11-19 05:23:42,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:23:42,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:42,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:23:42,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:23:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:23:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:23:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:23:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:23:42,421 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:23:42,423 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:23:42,559 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:23:42,602 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:23:42,603 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:23:42,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:23:42 BoogieIcfgContainer [2023-11-19 05:23:42,609 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:23:42,612 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:23:42,612 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:23:42,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:23:42,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:23:41" (1/3) ... [2023-11-19 05:23:42,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70197513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:23:42, skipping insertion in model container [2023-11-19 05:23:42,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:23:42" (2/3) ... [2023-11-19 05:23:42,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70197513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:23:42, skipping insertion in model container [2023-11-19 05:23:42,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:23:42" (3/3) ... [2023-11-19 05:23:42,619 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark38_conjunctive.i [2023-11-19 05:23:42,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:23:42,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 05:23:42,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:23:42,728 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;@755f31e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:23:42,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 05:23:42,735 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) [2023-11-19 05:23:42,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 05:23:42,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:42,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 05:23:42,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:42,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:42,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2420664, now seen corresponding path program 1 times [2023-11-19 05:23:42,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:42,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595716610] [2023-11-19 05:23:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:42,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:42,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:42,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595716610] [2023-11-19 05:23:42,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595716610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:42,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:42,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:23:42,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970259918] [2023-11-19 05:23:42,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:42,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:23:42,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:23:43,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:23:43,018 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:43,049 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2023-11-19 05:23:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:23:43,052 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 05:23:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:43,060 INFO L225 Difference]: With dead ends: 24 [2023-11-19 05:23:43,060 INFO L226 Difference]: Without dead ends: 16 [2023-11-19 05:23:43,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:23:43,069 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:43,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:23:43,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-19 05:23:43,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-19 05:23:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 states have internal predecessors, (16), 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) [2023-11-19 05:23:43,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-19 05:23:43,097 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2023-11-19 05:23:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:43,097 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-19 05:23:43,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-19 05:23:43,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:23:43,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:43,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:23:43,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:23:43,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:43,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:43,100 INFO L85 PathProgramCache]: Analyzing trace with hash 75025815, now seen corresponding path program 1 times [2023-11-19 05:23:43,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:43,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454665256] [2023-11-19 05:23:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:43,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:43,183 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:43,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454665256] [2023-11-19 05:23:43,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454665256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:43,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:43,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 05:23:43,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43496538] [2023-11-19 05:23:43,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:43,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:43,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:43,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:43,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:43,188 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:43,202 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2023-11-19 05:23:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:43,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-19 05:23:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:43,204 INFO L225 Difference]: With dead ends: 16 [2023-11-19 05:23:43,204 INFO L226 Difference]: Without dead ends: 15 [2023-11-19 05:23:43,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:43,206 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:43,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:23:43,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-19 05:23:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-19 05:23:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 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) [2023-11-19 05:23:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2023-11-19 05:23:43,212 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2023-11-19 05:23:43,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:43,213 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2023-11-19 05:23:43,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:43,214 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2023-11-19 05:23:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:23:43,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:43,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:23:43,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:23:43,215 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)] === [2023-11-19 05:23:43,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash 75025764, now seen corresponding path program 1 times [2023-11-19 05:23:43,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:43,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188843669] [2023-11-19 05:23:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:43,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:43,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:43,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188843669] [2023-11-19 05:23:43,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188843669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:43,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:43,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:23:43,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558535668] [2023-11-19 05:23:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:43,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:43,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:43,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:43,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:43,278 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. 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) [2023-11-19 05:23:43,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:43,308 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-11-19 05:23:43,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:43,309 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 [2023-11-19 05:23:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:43,310 INFO L225 Difference]: With dead ends: 27 [2023-11-19 05:23:43,316 INFO L226 Difference]: Without dead ends: 26 [2023-11-19 05:23:43,316 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 [2023-11-19 05:23:43,318 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:43,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:23:43,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-19 05:23:43,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2023-11-19 05:23:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-11-19 05:23:43,329 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2023-11-19 05:23:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:43,331 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-11-19 05:23:43,331 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) [2023-11-19 05:23:43,331 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-11-19 05:23:43,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:23:43,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:43,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:23:43,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:23:43,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:43,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:43,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1969166980, now seen corresponding path program 1 times [2023-11-19 05:23:43,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:43,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764745510] [2023-11-19 05:23:43,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:43,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:43,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:43,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764745510] [2023-11-19 05:23:43,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764745510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:43,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:43,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:23:43,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380475669] [2023-11-19 05:23:43,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:43,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:43,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:43,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:43,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:43,419 INFO L87 Difference]: Start difference. First operand 18 states and 19 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) [2023-11-19 05:23:43,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:43,434 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2023-11-19 05:23:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:43,435 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 [2023-11-19 05:23:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:43,436 INFO L225 Difference]: With dead ends: 23 [2023-11-19 05:23:43,436 INFO L226 Difference]: Without dead ends: 22 [2023-11-19 05:23:43,436 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 [2023-11-19 05:23:43,438 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:43,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:23:43,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-19 05:23:43,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-11-19 05:23:43,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 19 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) [2023-11-19 05:23:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-11-19 05:23:43,444 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2023-11-19 05:23:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:43,445 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-11-19 05:23:43,445 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) [2023-11-19 05:23:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-11-19 05:23:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:23:43,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:43,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:23:43,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:23:43,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:43,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:43,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1969168550, now seen corresponding path program 1 times [2023-11-19 05:23:43,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:43,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25003129] [2023-11-19 05:23:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:43,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:43,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:43,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25003129] [2023-11-19 05:23:43,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25003129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:43,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:43,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:23:43,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895541638] [2023-11-19 05:23:43,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:43,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:23:43,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:43,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:23:43,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:23:43,486 INFO L87 Difference]: Start difference. First operand 20 states and 21 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) [2023-11-19 05:23:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:43,506 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2023-11-19 05:23:43,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:23:43,507 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 [2023-11-19 05:23:43,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:43,508 INFO L225 Difference]: With dead ends: 26 [2023-11-19 05:23:43,508 INFO L226 Difference]: Without dead ends: 23 [2023-11-19 05:23:43,508 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 [2023-11-19 05:23:43,510 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:43,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:23:43,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-19 05:23:43,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-11-19 05:23:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2023-11-19 05:23:43,516 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2023-11-19 05:23:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:43,516 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2023-11-19 05:23:43,517 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) [2023-11-19 05:23:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2023-11-19 05:23:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 05:23:43,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:43,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:43,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:23:43,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:43,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:43,519 INFO L85 PathProgramCache]: Analyzing trace with hash -914634183, now seen corresponding path program 1 times [2023-11-19 05:23:43,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:43,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872417623] [2023-11-19 05:23:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:43,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:43,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:43,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:43,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872417623] [2023-11-19 05:23:43,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872417623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:43,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:43,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:23:43,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902468117] [2023-11-19 05:23:43,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:43,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:23:43,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:43,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:23:43,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:23:43,615 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2023-11-19 05:23:43,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:43,677 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2023-11-19 05:23:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:23:43,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2023-11-19 05:23:43,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:43,679 INFO L225 Difference]: With dead ends: 19 [2023-11-19 05:23:43,679 INFO L226 Difference]: Without dead ends: 17 [2023-11-19 05:23:43,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:23:43,681 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:43,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:23:43,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-19 05:23:43,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-19 05:23:43,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 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) [2023-11-19 05:23:43,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-19 05:23:43,686 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2023-11-19 05:23:43,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:43,687 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-11-19 05:23:43,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2023-11-19 05:23:43,687 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-19 05:23:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:23:43,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:43,688 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:43,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:23:43,694 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:43,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:43,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1711111454, now seen corresponding path program 1 times [2023-11-19 05:23:43,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:43,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11930423] [2023-11-19 05:23:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:43,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:43,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:43,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11930423] [2023-11-19 05:23:43,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11930423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:23:43,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:23:43,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:23:43,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647690767] [2023-11-19 05:23:43,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:23:43,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:23:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:43,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:23:43,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:23:43,750 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2023-11-19 05:23:43,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:43,776 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2023-11-19 05:23:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:23:43,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 [2023-11-19 05:23:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:43,778 INFO L225 Difference]: With dead ends: 20 [2023-11-19 05:23:43,778 INFO L226 Difference]: Without dead ends: 19 [2023-11-19 05:23:43,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:23:43,780 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:43,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:23:43,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-19 05:23:43,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-19 05:23:43,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:23:43,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2023-11-19 05:23:43,785 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 8 [2023-11-19 05:23:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:43,786 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2023-11-19 05:23:43,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2023-11-19 05:23:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2023-11-19 05:23:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:23:43,787 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:43,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:43,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 05:23:43,787 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:43,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash 45190213, now seen corresponding path program 1 times [2023-11-19 05:23:43,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:43,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546676552] [2023-11-19 05:23:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:43,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:43,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546676552] [2023-11-19 05:23:43,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546676552] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:43,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685754915] [2023-11-19 05:23:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:43,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:43,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:43,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:43,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:23:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:43,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:23:43,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:44,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:44,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:44,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685754915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:44,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [258426345] [2023-11-19 05:23:44,185 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:23:44,185 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:23:44,189 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:23:44,196 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:23:44,196 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:23:44,835 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:23:45,052 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '422#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 2147483644 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:23:45,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:23:45,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:45,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-19 05:23:45,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731906624] [2023-11-19 05:23:45,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:45,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:23:45,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:45,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:23:45,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:23:45,056 INFO L87 Difference]: Start difference. First operand 19 states and 19 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) [2023-11-19 05:23:45,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:45,098 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2023-11-19 05:23:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:23:45,099 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 [2023-11-19 05:23:45,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:45,103 INFO L225 Difference]: With dead ends: 47 [2023-11-19 05:23:45,104 INFO L226 Difference]: Without dead ends: 46 [2023-11-19 05:23:45,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:23:45,113 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:45,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 41 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:23:45,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-19 05:23:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2023-11-19 05:23:45,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.25) internal successors, (40), 34 states have internal predecessors, (40), 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) [2023-11-19 05:23:45,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2023-11-19 05:23:45,122 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2023-11-19 05:23:45,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:45,122 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2023-11-19 05:23:45,123 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) [2023-11-19 05:23:45,123 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2023-11-19 05:23:45,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:23:45,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:45,123 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:23:45,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:45,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:45,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:45,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:45,325 INFO L85 PathProgramCache]: Analyzing trace with hash 45188643, now seen corresponding path program 1 times [2023-11-19 05:23:45,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:45,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82529684] [2023-11-19 05:23:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:45,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:45,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:45,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82529684] [2023-11-19 05:23:45,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82529684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:45,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581042166] [2023-11-19 05:23:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:45,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:45,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:45,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:45,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:23:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:45,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:23:45,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:45,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:45,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581042166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:45,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1680464070] [2023-11-19 05:23:45,496 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:23:45,496 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:23:45,496 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:23:45,497 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:23:45,497 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:23:45,851 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:23:46,151 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '593#(and (<= 536870912 |ULTIMATE.start_main_~y~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_24| Int)) (= (mod |v_ULTIMATE.start_main_#t~nondet3#1_24| 256) 0)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:23:46,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:23:46,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:46,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 05:23:46,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784161740] [2023-11-19 05:23:46,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:46,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:23:46,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:46,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:23:46,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-19 05:23:46,158 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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) [2023-11-19 05:23:46,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:46,230 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2023-11-19 05:23:46,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:23:46,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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 [2023-11-19 05:23:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:46,234 INFO L225 Difference]: With dead ends: 42 [2023-11-19 05:23:46,234 INFO L226 Difference]: Without dead ends: 36 [2023-11-19 05:23:46,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:23:46,239 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:46,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 39 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:23:46,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-19 05:23:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2023-11-19 05:23:46,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 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) [2023-11-19 05:23:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-11-19 05:23:46,257 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 12 [2023-11-19 05:23:46,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:46,258 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-11-19 05:23:46,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 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) [2023-11-19 05:23:46,260 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-11-19 05:23:46,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-19 05:23:46,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:46,261 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1] [2023-11-19 05:23:46,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:46,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:46,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:46,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:46,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1313170288, now seen corresponding path program 1 times [2023-11-19 05:23:46,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:46,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124459759] [2023-11-19 05:23:46,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:46,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:46,635 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:46,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:46,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124459759] [2023-11-19 05:23:46,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124459759] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:46,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496990270] [2023-11-19 05:23:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:46,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:46,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:46,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:46,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:23:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:46,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:23:46,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:46,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:46,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496990270] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:46,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [656893431] [2023-11-19 05:23:46,815 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:23:46,815 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:23:46,815 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:23:46,815 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:23:46,816 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:23:47,049 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:23:47,317 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '817#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:23:47,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:23:47,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:47,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-19 05:23:47,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152892685] [2023-11-19 05:23:47,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:47,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 05:23:47,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:47,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 05:23:47,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-19 05:23:47,320 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 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) [2023-11-19 05:23:47,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:47,468 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2023-11-19 05:23:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:23:47,469 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 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 20 [2023-11-19 05:23:47,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:47,469 INFO L225 Difference]: With dead ends: 61 [2023-11-19 05:23:47,470 INFO L226 Difference]: Without dead ends: 60 [2023-11-19 05:23:47,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2023-11-19 05:23:47,471 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 34 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:47,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 45 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:47,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-19 05:23:47,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2023-11-19 05:23:47,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 46 states have (on average 1.173913043478261) internal successors, (54), 48 states have internal predecessors, (54), 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) [2023-11-19 05:23:47,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2023-11-19 05:23:47,478 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 20 [2023-11-19 05:23:47,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:47,478 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2023-11-19 05:23:47,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 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) [2023-11-19 05:23:47,479 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2023-11-19 05:23:47,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:23:47,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:47,480 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 05:23:47,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:47,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 05:23:47,702 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:47,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:47,702 INFO L85 PathProgramCache]: Analyzing trace with hash 488239989, now seen corresponding path program 2 times [2023-11-19 05:23:47,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:47,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942547755] [2023-11-19 05:23:47,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:47,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:47,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:47,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942547755] [2023-11-19 05:23:47,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942547755] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944698671] [2023-11-19 05:23:47,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:23:47,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:47,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:47,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:47,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:23:47,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-19 05:23:47,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:23:47,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:23:47,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:47,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:48,002 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:48,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944698671] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:48,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [804722012] [2023-11-19 05:23:48,005 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:23:48,005 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:23:48,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:23:48,006 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:23:48,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:23:48,201 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:23:48,530 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1112#(and (<= 536870912 |ULTIMATE.start_main_~y~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_40| Int)) (= (mod |v_ULTIMATE.start_main_#t~nondet3#1_40| 256) 0)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:23:48,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:23:48,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:48,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-19 05:23:48,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889530788] [2023-11-19 05:23:48,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:48,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 05:23:48,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:48,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 05:23:48,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2023-11-19 05:23:48,532 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 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) [2023-11-19 05:23:48,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:48,675 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2023-11-19 05:23:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:23:48,676 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 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) Word has length 24 [2023-11-19 05:23:48,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:48,677 INFO L225 Difference]: With dead ends: 68 [2023-11-19 05:23:48,677 INFO L226 Difference]: Without dead ends: 59 [2023-11-19 05:23:48,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-11-19 05:23:48,678 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 45 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:48,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 59 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-19 05:23:48,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2023-11-19 05:23:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 50 states have internal predecessors, (53), 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) [2023-11-19 05:23:48,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2023-11-19 05:23:48,685 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 24 [2023-11-19 05:23:48,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:48,685 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2023-11-19 05:23:48,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 16 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) [2023-11-19 05:23:48,685 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2023-11-19 05:23:48,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 05:23:48,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:48,686 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2023-11-19 05:23:48,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:48,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 05:23:48,900 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)] === [2023-11-19 05:23:48,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:48,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1487675360, now seen corresponding path program 2 times [2023-11-19 05:23:48,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:48,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658868233] [2023-11-19 05:23:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:48,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:49,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:49,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658868233] [2023-11-19 05:23:49,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658868233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:49,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639940115] [2023-11-19 05:23:49,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:23:49,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:49,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:49,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:49,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 05:23:49,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 05:23:49,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:23:49,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:23:49,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:49,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:49,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639940115] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:49,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1394723833] [2023-11-19 05:23:49,246 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:23:49,246 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:23:49,247 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:23:49,247 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:23:49,247 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:23:49,420 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:23:49,675 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1450#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 2147483644 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:23:49,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:23:49,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:49,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-19 05:23:49,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403150765] [2023-11-19 05:23:49,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:49,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:23:49,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:49,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:23:49,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:23:49,678 INFO L87 Difference]: Start difference. First operand 51 states and 53 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) [2023-11-19 05:23:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:49,750 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2023-11-19 05:23:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 05:23:49,751 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 [2023-11-19 05:23:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:49,753 INFO L225 Difference]: With dead ends: 84 [2023-11-19 05:23:49,753 INFO L226 Difference]: Without dead ends: 83 [2023-11-19 05:23:49,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-19 05:23:49,754 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:49,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 78 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-19 05:23:49,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2023-11-19 05:23:49,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 70 states have internal predecessors, (77), 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) [2023-11-19 05:23:49,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2023-11-19 05:23:49,772 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 30 [2023-11-19 05:23:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:49,775 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2023-11-19 05:23:49,775 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) [2023-11-19 05:23:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2023-11-19 05:23:49,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 05:23:49,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:49,779 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 1, 1, 1] [2023-11-19 05:23:49,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:49,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 05:23:49,994 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:49,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:49,994 INFO L85 PathProgramCache]: Analyzing trace with hash 566947604, now seen corresponding path program 2 times [2023-11-19 05:23:49,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:49,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487295250] [2023-11-19 05:23:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:49,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:50,248 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:50,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487295250] [2023-11-19 05:23:50,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487295250] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:50,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079045064] [2023-11-19 05:23:50,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:23:50,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:50,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:50,250 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:50,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 05:23:50,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-19 05:23:50,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:23:50,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 05:23:50,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:50,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:50,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079045064] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:50,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [901927980] [2023-11-19 05:23:50,695 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:23:50,695 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:23:50,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:23:50,695 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:23:50,695 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:23:50,863 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:23:51,222 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1920#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:23:51,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:23:51,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:51,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2023-11-19 05:23:51,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086800075] [2023-11-19 05:23:51,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:51,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-19 05:23:51,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:51,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-19 05:23:51,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=937, Unknown=0, NotChecked=0, Total=1190 [2023-11-19 05:23:51,225 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 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) [2023-11-19 05:23:51,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:51,575 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2023-11-19 05:23:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-19 05:23:51,575 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 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 44 [2023-11-19 05:23:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:51,576 INFO L225 Difference]: With dead ends: 123 [2023-11-19 05:23:51,576 INFO L226 Difference]: Without dead ends: 122 [2023-11-19 05:23:51,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 105 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=582, Invalid=1770, Unknown=0, NotChecked=0, Total=2352 [2023-11-19 05:23:51,578 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 129 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:51,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 81 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:51,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-19 05:23:51,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2023-11-19 05:23:51,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 94 states have (on average 1.148936170212766) internal successors, (108), 96 states have internal predecessors, (108), 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) [2023-11-19 05:23:51,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2023-11-19 05:23:51,586 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 44 [2023-11-19 05:23:51,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:51,587 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2023-11-19 05:23:51,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.0) internal successors, (87), 30 states have internal predecessors, (87), 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) [2023-11-19 05:23:51,587 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2023-11-19 05:23:51,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 05:23:51,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:51,588 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2023-11-19 05:23:51,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:51,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:51,816 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:51,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:51,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1441336601, now seen corresponding path program 3 times [2023-11-19 05:23:51,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:51,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615175387] [2023-11-19 05:23:51,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:51,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:52,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:52,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615175387] [2023-11-19 05:23:52,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615175387] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:52,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072192427] [2023-11-19 05:23:52,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:23:52,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:52,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:52,090 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:52,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:23:52,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:23:52,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:23:52,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 05:23:52,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:52,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:52,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072192427] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:52,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [300423422] [2023-11-19 05:23:52,580 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:23:52,580 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:23:52,581 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:23:52,581 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:23:52,581 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:23:52,765 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:23:53,213 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2517#(and (<= 536870912 |ULTIMATE.start_main_~y~0#1|) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_73| Int)) (= (mod |v_ULTIMATE.start_main_#t~nondet3#1_73| 256) 0)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:23:53,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:23:53,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:53,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2023-11-19 05:23:53,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798212392] [2023-11-19 05:23:53,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:53,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-19 05:23:53,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:53,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-19 05:23:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1046, Unknown=0, NotChecked=0, Total=1332 [2023-11-19 05:23:53,216 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 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) [2023-11-19 05:23:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:53,583 INFO L93 Difference]: Finished difference Result 126 states and 133 transitions. [2023-11-19 05:23:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-19 05:23:53,584 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 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 48 [2023-11-19 05:23:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:53,585 INFO L225 Difference]: With dead ends: 126 [2023-11-19 05:23:53,585 INFO L226 Difference]: Without dead ends: 109 [2023-11-19 05:23:53,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 114 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=637, Invalid=1913, Unknown=0, NotChecked=0, Total=2550 [2023-11-19 05:23:53,588 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 109 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:53,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 101 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:53,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-19 05:23:53,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2023-11-19 05:23:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 98 states have internal predecessors, (103), 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) [2023-11-19 05:23:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2023-11-19 05:23:53,596 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 48 [2023-11-19 05:23:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:53,597 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2023-11-19 05:23:53,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 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) [2023-11-19 05:23:53,597 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2023-11-19 05:23:53,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:23:53,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:53,599 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1] [2023-11-19 05:23:53,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:53,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 05:23:53,816 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)] === [2023-11-19 05:23:53,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:53,816 INFO L85 PathProgramCache]: Analyzing trace with hash 196072854, now seen corresponding path program 3 times [2023-11-19 05:23:53,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:53,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252724701] [2023-11-19 05:23:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:53,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:54,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:54,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252724701] [2023-11-19 05:23:54,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252724701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:54,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183211846] [2023-11-19 05:23:54,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:23:54,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:54,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:54,055 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:54,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 05:23:54,123 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:23:54,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:23:54,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:23:54,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:54,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:54,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183211846] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:54,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [405391961] [2023-11-19 05:23:54,510 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:23:54,510 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:23:54,511 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:23:54,511 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:23:54,511 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:23:54,702 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:23:55,089 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3221#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 2147483644 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:23:55,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:23:55,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:55,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-11-19 05:23:55,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666775109] [2023-11-19 05:23:55,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:55,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 05:23:55,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:55,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 05:23:55,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2023-11-19 05:23:55,092 INFO L87 Difference]: Start difference. First operand 99 states and 103 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) [2023-11-19 05:23:55,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:55,199 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2023-11-19 05:23:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 05:23:55,199 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 [2023-11-19 05:23:55,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:55,204 INFO L225 Difference]: With dead ends: 172 [2023-11-19 05:23:55,205 INFO L226 Difference]: Without dead ends: 171 [2023-11-19 05:23:55,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 171 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2023-11-19 05:23:55,209 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 82 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:55,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 146 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:23:55,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-19 05:23:55,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 143. [2023-11-19 05:23:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 140 states have (on average 1.1214285714285714) internal successors, (157), 142 states have internal predecessors, (157), 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) [2023-11-19 05:23:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 157 transitions. [2023-11-19 05:23:55,230 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 157 transitions. Word has length 66 [2023-11-19 05:23:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:55,233 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 157 transitions. [2023-11-19 05:23:55,233 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) [2023-11-19 05:23:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 157 transitions. [2023-11-19 05:23:55,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 05:23:55,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:55,241 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 1, 1, 1] [2023-11-19 05:23:55,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:55,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:55,443 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:55,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:55,443 INFO L85 PathProgramCache]: Analyzing trace with hash 526058076, now seen corresponding path program 3 times [2023-11-19 05:23:55,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:55,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223675898] [2023-11-19 05:23:55,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:55,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:23:56,307 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:56,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:23:56,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223675898] [2023-11-19 05:23:56,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223675898] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:23:56,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913627028] [2023-11-19 05:23:56,308 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 05:23:56,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:23:56,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:23:56,310 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:23:56,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:23:56,385 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 05:23:56,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:23:56,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 05:23:56,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:23:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:56,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:23:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:23:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913627028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:23:57,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2124965633] [2023-11-19 05:23:57,795 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:23:57,796 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:23:57,796 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:23:57,796 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:23:57,796 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:23:57,953 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:23:58,667 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4195#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:23:58,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:23:58,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:23:58,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2023-11-19 05:23:58,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471620237] [2023-11-19 05:23:58,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:23:58,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-19 05:23:58,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:23:58,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-19 05:23:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1005, Invalid=3417, Unknown=0, NotChecked=0, Total=4422 [2023-11-19 05:23:58,673 INFO L87 Difference]: Start difference. First operand 143 states and 157 transitions. Second operand has 62 states, 61 states have (on average 3.0) internal successors, (183), 62 states have internal predecessors, (183), 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) [2023-11-19 05:23:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:23:59,707 INFO L93 Difference]: Finished difference Result 247 states and 262 transitions. [2023-11-19 05:23:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-19 05:23:59,708 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 3.0) internal successors, (183), 62 states have internal predecessors, (183), 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 92 [2023-11-19 05:23:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:23:59,710 INFO L225 Difference]: With dead ends: 247 [2023-11-19 05:23:59,710 INFO L226 Difference]: Without dead ends: 246 [2023-11-19 05:23:59,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 225 SyntacticMatches, 15 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3420 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2430, Invalid=6882, Unknown=0, NotChecked=0, Total=9312 [2023-11-19 05:23:59,714 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 307 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:23:59,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 156 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:23:59,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-19 05:23:59,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 193. [2023-11-19 05:23:59,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 190 states have (on average 1.1368421052631579) internal successors, (216), 192 states have internal predecessors, (216), 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) [2023-11-19 05:23:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 216 transitions. [2023-11-19 05:23:59,726 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 216 transitions. Word has length 92 [2023-11-19 05:23:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:23:59,727 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 216 transitions. [2023-11-19 05:23:59,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 3.0) internal successors, (183), 62 states have internal predecessors, (183), 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) [2023-11-19 05:23:59,727 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 216 transitions. [2023-11-19 05:23:59,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-19 05:23:59,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:23:59,729 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2023-11-19 05:23:59,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:23:59,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 05:23:59,944 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:23:59,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:23:59,945 INFO L85 PathProgramCache]: Analyzing trace with hash 456014945, now seen corresponding path program 4 times [2023-11-19 05:23:59,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:23:59,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618595853] [2023-11-19 05:23:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:23:59,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:23:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:00,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618595853] [2023-11-19 05:24:00,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618595853] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:24:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790741665] [2023-11-19 05:24:00,747 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 05:24:00,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:00,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:00,749 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:24:00,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:24:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:00,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 05:24:00,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:00,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:24:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:02,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790741665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:24:02,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1853432758] [2023-11-19 05:24:02,182 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:24:02,182 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:24:02,183 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:24:02,183 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:24:02,183 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:24:02,378 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:24:03,205 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5396#(and (<= 536870912 |ULTIMATE.start_main_~y~0#1|) (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_128| Int)) (= (mod |v_ULTIMATE.start_main_#t~nondet3#1_128| 256) 0)) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:24:03,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:24:03,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:24:03,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2023-11-19 05:24:03,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701874775] [2023-11-19 05:24:03,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:24:03,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-19 05:24:03,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:03,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-19 05:24:03,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1070, Invalid=3622, Unknown=0, NotChecked=0, Total=4692 [2023-11-19 05:24:03,211 INFO L87 Difference]: Start difference. First operand 193 states and 216 transitions. Second operand has 64 states, 63 states have (on average 3.0317460317460316) internal successors, (191), 64 states have internal predecessors, (191), 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) [2023-11-19 05:24:04,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:04,347 INFO L93 Difference]: Finished difference Result 242 states and 257 transitions. [2023-11-19 05:24:04,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-19 05:24:04,347 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.0317460317460316) internal successors, (191), 64 states have internal predecessors, (191), 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 96 [2023-11-19 05:24:04,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:04,349 INFO L225 Difference]: With dead ends: 242 [2023-11-19 05:24:04,349 INFO L226 Difference]: Without dead ends: 209 [2023-11-19 05:24:04,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 234 SyntacticMatches, 17 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3748 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2541, Invalid=7161, Unknown=0, NotChecked=0, Total=9702 [2023-11-19 05:24:04,354 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 330 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:04,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 161 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:24:04,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-19 05:24:04,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 195. [2023-11-19 05:24:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 192 states have (on average 1.0572916666666667) internal successors, (203), 194 states have internal predecessors, (203), 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) [2023-11-19 05:24:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 203 transitions. [2023-11-19 05:24:04,364 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 203 transitions. Word has length 96 [2023-11-19 05:24:04,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:04,365 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 203 transitions. [2023-11-19 05:24:04,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.0317460317460316) internal successors, (191), 64 states have internal predecessors, (191), 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) [2023-11-19 05:24:04,365 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 203 transitions. [2023-11-19 05:24:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 05:24:04,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:04,367 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 1, 1, 1] [2023-11-19 05:24:04,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:24:04,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:04,572 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:24:04,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:04,573 INFO L85 PathProgramCache]: Analyzing trace with hash -264489086, now seen corresponding path program 4 times [2023-11-19 05:24:04,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:04,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517819280] [2023-11-19 05:24:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:04,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:05,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:05,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517819280] [2023-11-19 05:24:05,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517819280] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:24:05,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708052793] [2023-11-19 05:24:05,391 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 05:24:05,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:05,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:05,393 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:24:05,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 05:24:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:05,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 05:24:05,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:05,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:05,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:24:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1474 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:06,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708052793] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:24:06,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [890406943] [2023-11-19 05:24:06,717 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:24:06,717 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:24:06,717 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:24:06,717 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:24:06,718 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:24:06,851 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:24:07,558 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6832#(and (<= 1 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 2147483644 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:24:07,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:24:07,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:24:07,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-11-19 05:24:07,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371513203] [2023-11-19 05:24:07,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:24:07,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-19 05:24:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-19 05:24:07,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2023-11-19 05:24:07,563 INFO L87 Difference]: Start difference. First operand 195 states and 203 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) [2023-11-19 05:24:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:07,787 INFO L93 Difference]: Finished difference Result 348 states and 371 transitions. [2023-11-19 05:24:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-19 05:24:07,788 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 [2023-11-19 05:24:07,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:07,791 INFO L225 Difference]: With dead ends: 348 [2023-11-19 05:24:07,791 INFO L226 Difference]: Without dead ends: 347 [2023-11-19 05:24:07,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 363 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2023-11-19 05:24:07,793 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 138 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:07,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 278 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:24:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-19 05:24:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 287. [2023-11-19 05:24:07,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 284 states have (on average 1.1161971830985915) internal successors, (317), 286 states have internal predecessors, (317), 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) [2023-11-19 05:24:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 317 transitions. [2023-11-19 05:24:07,808 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 317 transitions. Word has length 138 [2023-11-19 05:24:07,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:07,808 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 317 transitions. [2023-11-19 05:24:07,809 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) [2023-11-19 05:24:07,809 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 317 transitions. [2023-11-19 05:24:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-19 05:24:07,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:07,811 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 30, 1, 1, 1] [2023-11-19 05:24:07,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:24:08,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 05:24:08,020 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:24:08,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:08,021 INFO L85 PathProgramCache]: Analyzing trace with hash 335485164, now seen corresponding path program 4 times [2023-11-19 05:24:08,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:08,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511447686] [2023-11-19 05:24:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:08,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 0 proven. 2790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:10,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:10,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511447686] [2023-11-19 05:24:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511447686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:24:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345334539] [2023-11-19 05:24:10,723 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 05:24:10,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:10,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:10,724 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:24:10,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 05:24:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:10,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-19 05:24:10,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 0 proven. 2790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:11,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:24:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 0 proven. 2790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:14,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345334539] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:24:14,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2113591831] [2023-11-19 05:24:14,800 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2023-11-19 05:24:14,800 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:24:14,800 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:24:14,800 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:24:14,800 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:24:14,910 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:24:16,720 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8814#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 2147483647 |ULTIMATE.start_main_#t~post4#1|) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:24:16,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:24:16,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:24:16,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 125 [2023-11-19 05:24:16,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337787410] [2023-11-19 05:24:16,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:24:16,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2023-11-19 05:24:16,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:16,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2023-11-19 05:24:16,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4045, Invalid=12985, Unknown=0, NotChecked=0, Total=17030 [2023-11-19 05:24:16,731 INFO L87 Difference]: Start difference. First operand 287 states and 317 transitions. Second operand has 126 states, 125 states have (on average 3.0) internal successors, (375), 126 states have internal predecessors, (375), 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) [2023-11-19 05:24:20,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:20,288 INFO L93 Difference]: Finished difference Result 495 states and 526 transitions. [2023-11-19 05:24:20,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-11-19 05:24:20,289 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 3.0) internal successors, (375), 126 states have internal predecessors, (375), 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 188 [2023-11-19 05:24:20,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:20,292 INFO L225 Difference]: With dead ends: 495 [2023-11-19 05:24:20,292 INFO L226 Difference]: Without dead ends: 494 [2023-11-19 05:24:20,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 465 SyntacticMatches, 31 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14028 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=9966, Invalid=27090, Unknown=0, NotChecked=0, Total=37056 [2023-11-19 05:24:20,296 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 788 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:20,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 269 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:24:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-11-19 05:24:20,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 385. [2023-11-19 05:24:20,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 382 states have (on average 1.130890052356021) internal successors, (432), 384 states have internal predecessors, (432), 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) [2023-11-19 05:24:20,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 432 transitions. [2023-11-19 05:24:20,314 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 432 transitions. Word has length 188 [2023-11-19 05:24:20,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:20,315 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 432 transitions. [2023-11-19 05:24:20,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 3.0) internal successors, (375), 126 states have internal predecessors, (375), 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) [2023-11-19 05:24:20,316 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 432 transitions. [2023-11-19 05:24:20,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-19 05:24:20,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:20,318 INFO L195 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2023-11-19 05:24:20,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:24:20,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:20,519 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 05:24:20,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:20,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1539607281, now seen corresponding path program 5 times [2023-11-19 05:24:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:24:20,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116049880] [2023-11-19 05:24:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:20,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:24:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 0 proven. 2852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:23,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:24:23,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116049880] [2023-11-19 05:24:23,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116049880] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:24:23,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692403723] [2023-11-19 05:24:23,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:24:23,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:24:23,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:23,505 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:24:23,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a48e5558-c48b-4b66-906a-1b1648d94b39/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 05:24:23,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2023-11-19 05:24:23,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:24:23,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-19 05:24:23,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 0 proven. 2852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:23,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:24:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2852 backedges. 0 proven. 2852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:24:27,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692403723] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:24:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [288436439] [2023-11-19 05:24:27,624 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-11-19 05:24:27,624 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:24:27,624 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:24:27,625 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:24:27,625 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:24:27,824 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:24:29,812 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11223#(and (<= 536870912 |ULTIMATE.start_main_~y~0#1|) (<= 1 |#StackHeapBarrier|) (exists ((|v_ULTIMATE.start_main_#t~nondet3#1_227| Int)) (= (mod |v_ULTIMATE.start_main_#t~nondet3#1_227| 256) 0)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (<= 4 |ULTIMATE.start_main_~x~0#1|))' at error location [2023-11-19 05:24:29,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:24:29,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:24:29,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2023-11-19 05:24:29,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046301909] [2023-11-19 05:24:29,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:24:29,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2023-11-19 05:24:29,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:24:29,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2023-11-19 05:24:29,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4174, Invalid=13382, Unknown=0, NotChecked=0, Total=17556 [2023-11-19 05:24:29,820 INFO L87 Difference]: Start difference. First operand 385 states and 432 transitions. Second operand has 128 states, 127 states have (on average 3.015748031496063) internal successors, (383), 128 states have internal predecessors, (383), 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)