./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c --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_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d97e16340b134520fbcd52e88b56205e8eec0d97e940a97449195072afa1eb85 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:41,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:41,940 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:46:41,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:41,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:41,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:41,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:41,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:41,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:41,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:41,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:41,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:41,975 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:41,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:41,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:46:41,976 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:41,977 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:41,977 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:41,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:41,978 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:46:41,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:41,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:46:41,983 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:46:41,984 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:46:41,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:41,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:46:41,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:41,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:41,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:41,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:41,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:41,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:41,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:41,992 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:46:41,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:46:41,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:46:41,993 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:41,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:46:41,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:41,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:41,995 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:41,996 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d97e16340b134520fbcd52e88b56205e8eec0d97e940a97449195072afa1eb85 [2023-11-19 07:46:42,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:42,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:42,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:42,298 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:42,298 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:42,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c [2023-11-19 07:46:45,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:45,725 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:45,726 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c [2023-11-19 07:46:45,739 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/data/f34275312/4b8f610102ed4ec98a41005b5901f9c3/FLAG2de784e52 [2023-11-19 07:46:45,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/data/f34275312/4b8f610102ed4ec98a41005b5901f9c3 [2023-11-19 07:46:45,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:45,767 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:45,773 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:45,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:45,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:45,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:45" (1/1) ... [2023-11-19 07:46:45,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb2ff11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:45, skipping insertion in model container [2023-11-19 07:46:45,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:45" (1/1) ... [2023-11-19 07:46:45,814 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:46,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:46,042 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:46,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:46,084 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:46,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46 WrapperNode [2023-11-19 07:46:46,084 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:46,085 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:46,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:46,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:46,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,123 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-11-19 07:46:46,123 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:46,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:46,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:46,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:46,134 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,150 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:46,152 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:46,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:46,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:46,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:46,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:46,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:46,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:46:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:46:46,235 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:46:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:46:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:46,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:46:46,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:46:46,297 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:46,298 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:46,581 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:46,592 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:46,592 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:46:46,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:46 BoogieIcfgContainer [2023-11-19 07:46:46,597 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:46,601 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:46:46,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:46:46,605 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:46:46,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:45" (1/3) ... [2023-11-19 07:46:46,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42888b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:46, skipping insertion in model container [2023-11-19 07:46:46,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (2/3) ... [2023-11-19 07:46:46,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42888b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:46, skipping insertion in model container [2023-11-19 07:46:46,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:46" (3/3) ... [2023-11-19 07:46:46,609 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound50.c [2023-11-19 07:46:46,625 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:46:46,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 07:46:46,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:46,685 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=PETRI_NET, 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;@4f91a70d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:46,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-11-19 07:46:46,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 79 states have internal predecessors, (87), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 07:46:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:46:46,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:46,700 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:46,701 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:46,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:46,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1983182931, now seen corresponding path program 1 times [2023-11-19 07:46:46,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:46,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208627847] [2023-11-19 07:46:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:46,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:46,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:46,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208627847] [2023-11-19 07:46:46,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:46:46,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335850148] [2023-11-19 07:46:46,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:46,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:46,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:46,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:46,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:46:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:47,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:46:47,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:46:47,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:47,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335850148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:47,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:47,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:47,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714167263] [2023-11-19 07:46:47,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:47,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:46:47,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:47,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:46:47,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:46:47,244 INFO L87 Difference]: Start difference. First operand has 92 states, 49 states have (on average 1.7755102040816326) internal successors, (87), 79 states have internal predecessors, (87), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:46:47,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:47,279 INFO L93 Difference]: Finished difference Result 180 states and 219 transitions. [2023-11-19 07:46:47,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:46:47,282 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2023-11-19 07:46:47,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:47,292 INFO L225 Difference]: With dead ends: 180 [2023-11-19 07:46:47,292 INFO L226 Difference]: Without dead ends: 85 [2023-11-19 07:46:47,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 07:46:47,301 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:47,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:46:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-19 07:46:47,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-19 07:46:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 73 states have internal predecessors, (75), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:46:47,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2023-11-19 07:46:47,357 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 21 [2023-11-19 07:46:47,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:47,357 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2023-11-19 07:46:47,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:46:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2023-11-19 07:46:47,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:46:47,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:47,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:47,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:46:47,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:47,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:47,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:47,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1153157909, now seen corresponding path program 1 times [2023-11-19 07:46:47,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:47,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885856456] [2023-11-19 07:46:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:47,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:47,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:47,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747919545] [2023-11-19 07:46:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:47,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:47,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:47,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:47,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:46:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:47,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:46:47,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:46:47,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:47,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:47,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885856456] [2023-11-19 07:46:47,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:47,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747919545] [2023-11-19 07:46:47,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747919545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:47,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:47,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:47,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390058163] [2023-11-19 07:46:47,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:47,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:47,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:47,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:47,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:47,758 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:46:47,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:47,838 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2023-11-19 07:46:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:47,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2023-11-19 07:46:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:47,842 INFO L225 Difference]: With dead ends: 109 [2023-11-19 07:46:47,844 INFO L226 Difference]: Without dead ends: 107 [2023-11-19 07:46:47,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 07:46:47,846 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 18 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:47,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 161 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:46:47,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-19 07:46:47,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 88. [2023-11-19 07:46:47,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 47 states have (on average 1.6595744680851063) internal successors, (78), 76 states have internal predecessors, (78), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:46:47,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2023-11-19 07:46:47,865 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 21 [2023-11-19 07:46:47,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:47,866 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2023-11-19 07:46:47,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:46:47,866 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2023-11-19 07:46:47,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:46:47,868 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:47,868 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:47,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:48,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:48,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:48,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:48,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1796725672, now seen corresponding path program 1 times [2023-11-19 07:46:48,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:48,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157730038] [2023-11-19 07:46:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:48,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:48,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:48,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037735421] [2023-11-19 07:46:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:48,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:48,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:48,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:48,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:46:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:48,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:46:48,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:46:48,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:48,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:48,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157730038] [2023-11-19 07:46:48,256 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:48,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037735421] [2023-11-19 07:46:48,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037735421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:48,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:48,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:48,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677570538] [2023-11-19 07:46:48,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:48,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:48,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:48,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:48,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:48,260 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:46:48,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:48,370 INFO L93 Difference]: Finished difference Result 153 states and 168 transitions. [2023-11-19 07:46:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:48,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-11-19 07:46:48,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:48,374 INFO L225 Difference]: With dead ends: 153 [2023-11-19 07:46:48,374 INFO L226 Difference]: Without dead ends: 147 [2023-11-19 07:46:48,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 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 07:46:48,376 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 53 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:48,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 136 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:46:48,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-19 07:46:48,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2023-11-19 07:46:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 101 states have internal predecessors, (121), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:46:48,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 151 transitions. [2023-11-19 07:46:48,396 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 151 transitions. Word has length 28 [2023-11-19 07:46:48,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:48,397 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 151 transitions. [2023-11-19 07:46:48,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:46:48,397 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 151 transitions. [2023-11-19 07:46:48,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:46:48,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:48,398 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:48,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:48,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:48,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:48,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:48,613 INFO L85 PathProgramCache]: Analyzing trace with hash -76516038, now seen corresponding path program 1 times [2023-11-19 07:46:48,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:48,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766691732] [2023-11-19 07:46:48,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:48,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:48,631 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:48,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2056197986] [2023-11-19 07:46:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:48,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:48,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:48,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:48,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:46:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:48,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:46:48,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:46:48,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:48,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:48,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766691732] [2023-11-19 07:46:48,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:48,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056197986] [2023-11-19 07:46:48,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056197986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:48,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:48,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:48,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015900123] [2023-11-19 07:46:48,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:48,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:48,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:48,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:48,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:48,857 INFO L87 Difference]: Start difference. First operand 119 states and 151 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:46:49,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:49,011 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2023-11-19 07:46:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:49,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-11-19 07:46:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:49,014 INFO L225 Difference]: With dead ends: 143 [2023-11-19 07:46:49,015 INFO L226 Difference]: Without dead ends: 140 [2023-11-19 07:46:49,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 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 07:46:49,016 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 160 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:49,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 142 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:46:49,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-19 07:46:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 120. [2023-11-19 07:46:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 73 states have (on average 1.643835616438356) internal successors, (120), 102 states have internal predecessors, (120), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:46:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 150 transitions. [2023-11-19 07:46:49,036 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 150 transitions. Word has length 30 [2023-11-19 07:46:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:49,036 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 150 transitions. [2023-11-19 07:46:49,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:46:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 150 transitions. [2023-11-19 07:46:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:46:49,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:49,038 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:49,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:49,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:49,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:49,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:49,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1922970177, now seen corresponding path program 1 times [2023-11-19 07:46:49,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:49,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967157505] [2023-11-19 07:46:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:49,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:49,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:49,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180961985] [2023-11-19 07:46:49,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:49,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:49,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:49,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:49,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:46:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:49,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:46:49,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:46:49,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:49,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:49,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967157505] [2023-11-19 07:46:49,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:49,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180961985] [2023-11-19 07:46:49,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180961985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:49,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:49,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:49,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214987170] [2023-11-19 07:46:49,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:49,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:49,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:49,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:49,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:49,449 INFO L87 Difference]: Start difference. First operand 120 states and 150 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:46:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:49,580 INFO L93 Difference]: Finished difference Result 140 states and 155 transitions. [2023-11-19 07:46:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:49,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2023-11-19 07:46:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:49,582 INFO L225 Difference]: With dead ends: 140 [2023-11-19 07:46:49,583 INFO L226 Difference]: Without dead ends: 133 [2023-11-19 07:46:49,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 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 07:46:49,584 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 153 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:49,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 145 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:46:49,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-19 07:46:49,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 117. [2023-11-19 07:46:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 70 states have (on average 1.6285714285714286) internal successors, (114), 99 states have internal predecessors, (114), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:46:49,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 144 transitions. [2023-11-19 07:46:49,603 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 144 transitions. Word has length 31 [2023-11-19 07:46:49,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:49,604 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 144 transitions. [2023-11-19 07:46:49,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:46:49,604 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 144 transitions. [2023-11-19 07:46:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:46:49,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:49,606 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:49,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:49,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:49,827 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:49,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:49,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1457275482, now seen corresponding path program 1 times [2023-11-19 07:46:49,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:49,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934003398] [2023-11-19 07:46:49,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:49,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:49,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:49,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726355290] [2023-11-19 07:46:49,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:49,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:49,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:49,860 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:49,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:46:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:49,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:46:49,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:46:49,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:49,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:49,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934003398] [2023-11-19 07:46:49,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:49,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726355290] [2023-11-19 07:46:49,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726355290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:49,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:49,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:49,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628374847] [2023-11-19 07:46:49,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:49,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:49,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:49,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:49,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:49,989 INFO L87 Difference]: Start difference. First operand 117 states and 144 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:46:50,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:50,421 INFO L93 Difference]: Finished difference Result 203 states and 252 transitions. [2023-11-19 07:46:50,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:50,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2023-11-19 07:46:50,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:50,424 INFO L225 Difference]: With dead ends: 203 [2023-11-19 07:46:50,424 INFO L226 Difference]: Without dead ends: 198 [2023-11-19 07:46:50,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:50,426 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 157 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:50,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 86 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:46:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-19 07:46:50,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2023-11-19 07:46:50,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 108 states have (on average 1.6111111111111112) internal successors, (174), 137 states have internal predecessors, (174), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:46:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 220 transitions. [2023-11-19 07:46:50,451 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 220 transitions. Word has length 39 [2023-11-19 07:46:50,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:50,452 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 220 transitions. [2023-11-19 07:46:50,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:46:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 220 transitions. [2023-11-19 07:46:50,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 07:46:50,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:50,454 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:50,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:50,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:50,668 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:50,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:50,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2069100392, now seen corresponding path program 1 times [2023-11-19 07:46:50,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:50,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064385369] [2023-11-19 07:46:50,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:50,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:50,685 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:50,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964785748] [2023-11-19 07:46:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:50,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:50,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:50,697 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:50,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:46:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:50,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:46:50,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:46:50,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:50,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:50,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064385369] [2023-11-19 07:46:50,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:50,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964785748] [2023-11-19 07:46:50,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964785748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:50,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:50,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:50,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747145292] [2023-11-19 07:46:50,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:50,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:50,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:50,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:50,846 INFO L87 Difference]: Start difference. First operand 163 states and 220 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:46:51,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:51,033 INFO L93 Difference]: Finished difference Result 198 states and 243 transitions. [2023-11-19 07:46:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:51,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2023-11-19 07:46:51,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:51,036 INFO L225 Difference]: With dead ends: 198 [2023-11-19 07:46:51,036 INFO L226 Difference]: Without dead ends: 195 [2023-11-19 07:46:51,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:51,037 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 107 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:51,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 105 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:46:51,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-19 07:46:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 164. [2023-11-19 07:46:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 109 states have (on average 1.5688073394495412) internal successors, (171), 138 states have internal predecessors, (171), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:46:51,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2023-11-19 07:46:51,060 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 40 [2023-11-19 07:46:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:51,060 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2023-11-19 07:46:51,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:46:51,061 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2023-11-19 07:46:51,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 07:46:51,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:51,063 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:51,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:51,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:51,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:51,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1433210023, now seen corresponding path program 1 times [2023-11-19 07:46:51,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:51,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948964113] [2023-11-19 07:46:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:51,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:51,302 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:51,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535690144] [2023-11-19 07:46:51,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:51,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:51,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:51,303 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:51,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:46:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:51,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:51,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:46:51,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:51,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:51,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948964113] [2023-11-19 07:46:51,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:51,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535690144] [2023-11-19 07:46:51,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535690144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:51,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:51,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:51,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61928590] [2023-11-19 07:46:51,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:51,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:51,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:51,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:51,472 INFO L87 Difference]: Start difference. First operand 164 states and 217 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:46:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:52,085 INFO L93 Difference]: Finished difference Result 199 states and 246 transitions. [2023-11-19 07:46:52,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:52,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2023-11-19 07:46:52,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:52,088 INFO L225 Difference]: With dead ends: 199 [2023-11-19 07:46:52,088 INFO L226 Difference]: Without dead ends: 197 [2023-11-19 07:46:52,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 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 07:46:52,090 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 152 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:52,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 93 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:46:52,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-19 07:46:52,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 166. [2023-11-19 07:46:52,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 111 states have (on average 1.5405405405405406) internal successors, (171), 140 states have internal predecessors, (171), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:46:52,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 217 transitions. [2023-11-19 07:46:52,114 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 217 transitions. Word has length 60 [2023-11-19 07:46:52,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:52,115 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 217 transitions. [2023-11-19 07:46:52,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:46:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 217 transitions. [2023-11-19 07:46:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 07:46:52,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:52,117 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:52,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:52,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:52,328 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:52,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1479837660, now seen corresponding path program 1 times [2023-11-19 07:46:52,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:52,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516554782] [2023-11-19 07:46:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:52,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:52,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:52,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94750155] [2023-11-19 07:46:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:52,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:52,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:52,347 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:52,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:46:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:52,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:52,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:46:52,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:52,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:52,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516554782] [2023-11-19 07:46:52,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:52,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94750155] [2023-11-19 07:46:52,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94750155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:52,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:52,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:52,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376052727] [2023-11-19 07:46:52,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:52,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:52,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:52,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:52,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:52,507 INFO L87 Difference]: Start difference. First operand 166 states and 217 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:46:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:52,702 INFO L93 Difference]: Finished difference Result 199 states and 242 transitions. [2023-11-19 07:46:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:52,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2023-11-19 07:46:52,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:52,705 INFO L225 Difference]: With dead ends: 199 [2023-11-19 07:46:52,705 INFO L226 Difference]: Without dead ends: 197 [2023-11-19 07:46:52,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 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 07:46:52,708 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 147 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:52,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 95 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:46:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-19 07:46:52,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 168. [2023-11-19 07:46:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 113 states have (on average 1.5132743362831858) internal successors, (171), 142 states have internal predecessors, (171), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:46:52,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 217 transitions. [2023-11-19 07:46:52,736 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 217 transitions. Word has length 61 [2023-11-19 07:46:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:52,737 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 217 transitions. [2023-11-19 07:46:52,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:46:52,737 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 217 transitions. [2023-11-19 07:46:52,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 07:46:52,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:52,745 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:52,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:52,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:52,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:52,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:52,965 INFO L85 PathProgramCache]: Analyzing trace with hash -489813188, now seen corresponding path program 1 times [2023-11-19 07:46:52,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:52,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102679966] [2023-11-19 07:46:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:52,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:52,979 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:52,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270982067] [2023-11-19 07:46:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:52,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:52,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:52,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:52,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:46:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:53,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:46:53,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:46:53,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:53,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:53,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102679966] [2023-11-19 07:46:53,107 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:53,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270982067] [2023-11-19 07:46:53,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270982067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:53,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:53,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:53,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079048745] [2023-11-19 07:46:53,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:53,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:53,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:53,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:53,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:53,110 INFO L87 Difference]: Start difference. First operand 168 states and 217 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:46:53,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:53,179 INFO L93 Difference]: Finished difference Result 175 states and 217 transitions. [2023-11-19 07:46:53,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:53,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2023-11-19 07:46:53,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:53,182 INFO L225 Difference]: With dead ends: 175 [2023-11-19 07:46:53,182 INFO L226 Difference]: Without dead ends: 174 [2023-11-19 07:46:53,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 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 07:46:53,183 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 16 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:53,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 144 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:46:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-19 07:46:53,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 168. [2023-11-19 07:46:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 113 states have (on average 1.5044247787610618) internal successors, (170), 142 states have internal predecessors, (170), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:46:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 216 transitions. [2023-11-19 07:46:53,203 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 216 transitions. Word has length 63 [2023-11-19 07:46:53,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:53,204 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 216 transitions. [2023-11-19 07:46:53,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:46:53,204 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 216 transitions. [2023-11-19 07:46:53,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 07:46:53,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:53,205 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:53,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:53,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:46:53,426 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:53,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:53,427 INFO L85 PathProgramCache]: Analyzing trace with hash -489813146, now seen corresponding path program 1 times [2023-11-19 07:46:53,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:53,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693009101] [2023-11-19 07:46:53,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:53,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:53,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:53,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851824172] [2023-11-19 07:46:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:53,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:53,442 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:53,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:46:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:53,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:46:53,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-19 07:46:53,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:53,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:53,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693009101] [2023-11-19 07:46:53,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:53,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851824172] [2023-11-19 07:46:53,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851824172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:53,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:53,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:53,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228443862] [2023-11-19 07:46:53,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:53,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:53,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:53,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:53,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:53,582 INFO L87 Difference]: Start difference. First operand 168 states and 216 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:46:53,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:53,706 INFO L93 Difference]: Finished difference Result 168 states and 216 transitions. [2023-11-19 07:46:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:53,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2023-11-19 07:46:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:53,708 INFO L225 Difference]: With dead ends: 168 [2023-11-19 07:46:53,709 INFO L226 Difference]: Without dead ends: 167 [2023-11-19 07:46:53,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:53,710 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 48 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:53,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 149 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:46:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-19 07:46:53,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2023-11-19 07:46:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 113 states have (on average 1.4690265486725664) internal successors, (166), 141 states have internal predecessors, (166), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:46:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 212 transitions. [2023-11-19 07:46:53,729 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 212 transitions. Word has length 63 [2023-11-19 07:46:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:53,729 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 212 transitions. [2023-11-19 07:46:53,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:46:53,730 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 212 transitions. [2023-11-19 07:46:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 07:46:53,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:53,731 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:53,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:53,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:46:53,956 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:53,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:53,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1995660478, now seen corresponding path program 1 times [2023-11-19 07:46:53,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:53,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947631023] [2023-11-19 07:46:53,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:53,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:54,010 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:54,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543276834] [2023-11-19 07:46:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:54,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:54,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:54,032 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:54,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:46:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:54,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:54,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:46:54,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:54,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:54,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947631023] [2023-11-19 07:46:54,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:54,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543276834] [2023-11-19 07:46:54,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543276834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:54,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:54,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:46:54,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273622431] [2023-11-19 07:46:54,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:54,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:54,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:54,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:54,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:54,241 INFO L87 Difference]: Start difference. First operand 167 states and 212 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:46:54,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:54,337 INFO L93 Difference]: Finished difference Result 167 states and 212 transitions. [2023-11-19 07:46:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:54,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2023-11-19 07:46:54,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:54,340 INFO L225 Difference]: With dead ends: 167 [2023-11-19 07:46:54,340 INFO L226 Difference]: Without dead ends: 166 [2023-11-19 07:46:54,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:46:54,341 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 105 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:54,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 165 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:46:54,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-19 07:46:54,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-11-19 07:46:54,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 113 states have (on average 1.4513274336283186) internal successors, (164), 140 states have internal predecessors, (164), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:46:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 210 transitions. [2023-11-19 07:46:54,362 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 210 transitions. Word has length 64 [2023-11-19 07:46:54,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:54,363 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 210 transitions. [2023-11-19 07:46:54,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 07:46:54,363 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 210 transitions. [2023-11-19 07:46:54,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 07:46:54,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:54,365 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:54,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:54,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:46:54,587 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:54,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1995661760, now seen corresponding path program 1 times [2023-11-19 07:46:54,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:54,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611748039] [2023-11-19 07:46:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:54,606 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:54,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237085655] [2023-11-19 07:46:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:54,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:54,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:54,609 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:54,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:46:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:54,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:46:54,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:46:54,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:54,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611748039] [2023-11-19 07:46:54,771 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237085655] [2023-11-19 07:46:54,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237085655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:54,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:54,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:46:54,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917106209] [2023-11-19 07:46:54,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:54,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:46:54,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:54,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:46:54,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:54,773 INFO L87 Difference]: Start difference. First operand 166 states and 210 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:46:55,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:55,037 INFO L93 Difference]: Finished difference Result 229 states and 269 transitions. [2023-11-19 07:46:55,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:46:55,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 64 [2023-11-19 07:46:55,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:55,040 INFO L225 Difference]: With dead ends: 229 [2023-11-19 07:46:55,040 INFO L226 Difference]: Without dead ends: 228 [2023-11-19 07:46:55,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:46:55,041 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 282 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:55,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 221 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:46:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-19 07:46:55,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 195. [2023-11-19 07:46:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 137 states have (on average 1.437956204379562) internal successors, (197), 164 states have internal predecessors, (197), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 07:46:55,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 253 transitions. [2023-11-19 07:46:55,064 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 253 transitions. Word has length 64 [2023-11-19 07:46:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:55,065 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 253 transitions. [2023-11-19 07:46:55,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:46:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 253 transitions. [2023-11-19 07:46:55,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:46:55,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:55,066 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:55,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:55,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:46:55,297 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:55,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:55,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1735932798, now seen corresponding path program 1 times [2023-11-19 07:46:55,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:55,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177611042] [2023-11-19 07:46:55,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:55,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:55,311 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:55,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349582943] [2023-11-19 07:46:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:55,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:55,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:55,313 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:55,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:46:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:55,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:46:55,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:46:55,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:55,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:55,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177611042] [2023-11-19 07:46:55,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:55,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349582943] [2023-11-19 07:46:55,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349582943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:55,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:55,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:55,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785357106] [2023-11-19 07:46:55,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:55,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:55,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:55,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:55,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:55,479 INFO L87 Difference]: Start difference. First operand 195 states and 253 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:46:55,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:55,748 INFO L93 Difference]: Finished difference Result 195 states and 253 transitions. [2023-11-19 07:46:55,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:55,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 65 [2023-11-19 07:46:55,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:55,751 INFO L225 Difference]: With dead ends: 195 [2023-11-19 07:46:55,751 INFO L226 Difference]: Without dead ends: 193 [2023-11-19 07:46:55,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:55,753 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 46 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:55,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 101 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:46:55,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-19 07:46:55,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-11-19 07:46:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 137 states have (on average 1.4014598540145986) internal successors, (192), 162 states have internal predecessors, (192), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 07:46:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 248 transitions. [2023-11-19 07:46:55,776 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 248 transitions. Word has length 65 [2023-11-19 07:46:55,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:55,776 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 248 transitions. [2023-11-19 07:46:55,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:46:55,777 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 248 transitions. [2023-11-19 07:46:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 07:46:55,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:55,778 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:55,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:55,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:46:55,993 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:55,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:55,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2020657984, now seen corresponding path program 1 times [2023-11-19 07:46:55,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:55,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873326757] [2023-11-19 07:46:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:55,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:56,013 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:56,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943294458] [2023-11-19 07:46:56,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:56,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:56,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:56,016 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:56,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:46:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:56,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:46:56,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 07:46:56,166 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:56,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:56,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873326757] [2023-11-19 07:46:56,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:56,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943294458] [2023-11-19 07:46:56,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943294458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:56,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:56,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:46:56,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989056111] [2023-11-19 07:46:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:56,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:56,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:56,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:56,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:56,169 INFO L87 Difference]: Start difference. First operand 193 states and 248 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:46:56,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:56,302 INFO L93 Difference]: Finished difference Result 213 states and 259 transitions. [2023-11-19 07:46:56,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:56,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2023-11-19 07:46:56,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:56,304 INFO L225 Difference]: With dead ends: 213 [2023-11-19 07:46:56,305 INFO L226 Difference]: Without dead ends: 212 [2023-11-19 07:46:56,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:46:56,306 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 47 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:56,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 172 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:46:56,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-19 07:46:56,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 197. [2023-11-19 07:46:56,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 141 states have (on average 1.3900709219858156) internal successors, (196), 166 states have internal predecessors, (196), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 07:46:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 252 transitions. [2023-11-19 07:46:56,333 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 252 transitions. Word has length 66 [2023-11-19 07:46:56,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:56,334 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 252 transitions. [2023-11-19 07:46:56,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 07:46:56,334 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 252 transitions. [2023-11-19 07:46:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 07:46:56,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:56,335 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:56,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:56,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:46:56,549 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:56,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:56,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1205477451, now seen corresponding path program 1 times [2023-11-19 07:46:56,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:56,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371409288] [2023-11-19 07:46:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:56,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:56,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:56,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508341708] [2023-11-19 07:46:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:56,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:56,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:56,565 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:56,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:46:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:56,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:46:56,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 07:46:56,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:57,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:57,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371409288] [2023-11-19 07:46:57,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:57,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508341708] [2023-11-19 07:46:57,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508341708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:57,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:46:57,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:46:57,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152603613] [2023-11-19 07:46:57,345 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:57,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:46:57,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:57,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:46:57,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:46:57,347 INFO L87 Difference]: Start difference. First operand 197 states and 252 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-19 07:46:58,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:58,040 INFO L93 Difference]: Finished difference Result 303 states and 366 transitions. [2023-11-19 07:46:58,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:46:58,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 75 [2023-11-19 07:46:58,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:58,043 INFO L225 Difference]: With dead ends: 303 [2023-11-19 07:46:58,044 INFO L226 Difference]: Without dead ends: 296 [2023-11-19 07:46:58,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:46:58,045 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 329 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:58,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 311 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:46:58,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-11-19 07:46:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 233. [2023-11-19 07:46:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 173 states have (on average 1.3815028901734103) internal successors, (239), 197 states have internal predecessors, (239), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-19 07:46:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 305 transitions. [2023-11-19 07:46:58,077 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 305 transitions. Word has length 75 [2023-11-19 07:46:58,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:58,077 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 305 transitions. [2023-11-19 07:46:58,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-19 07:46:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 305 transitions. [2023-11-19 07:46:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:46:58,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:58,079 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:58,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:58,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:46:58,295 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:46:58,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1284904628, now seen corresponding path program 1 times [2023-11-19 07:46:58,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:58,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80959512] [2023-11-19 07:46:58,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:58,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:58,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:46:58,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46580497] [2023-11-19 07:46:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:58,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:58,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:58,329 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:58,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:46:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:58,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:46:58,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 07:46:58,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:59,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:59,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80959512] [2023-11-19 07:46:59,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:46:59,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46580497] [2023-11-19 07:46:59,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46580497] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:59,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:46:59,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:46:59,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213064520] [2023-11-19 07:46:59,025 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:59,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:46:59,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:59,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:46:59,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:46:59,027 INFO L87 Difference]: Start difference. First operand 233 states and 305 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-19 07:46:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:46:59,804 INFO L93 Difference]: Finished difference Result 329 states and 408 transitions. [2023-11-19 07:46:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:46:59,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 76 [2023-11-19 07:46:59,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:46:59,807 INFO L225 Difference]: With dead ends: 329 [2023-11-19 07:46:59,807 INFO L226 Difference]: Without dead ends: 326 [2023-11-19 07:46:59,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:46:59,809 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 262 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:46:59,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 351 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:46:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-19 07:46:59,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 289. [2023-11-19 07:46:59,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 219 states have (on average 1.3744292237442923) internal successors, (301), 243 states have internal predecessors, (301), 43 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-19 07:46:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 387 transitions. [2023-11-19 07:46:59,845 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 387 transitions. Word has length 76 [2023-11-19 07:46:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:46:59,845 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 387 transitions. [2023-11-19 07:46:59,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-19 07:46:59,846 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 387 transitions. [2023-11-19 07:46:59,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:46:59,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:46:59,847 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:59,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:00,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:47:00,067 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:00,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:00,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1177337747, now seen corresponding path program 1 times [2023-11-19 07:47:00,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:00,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429209047] [2023-11-19 07:47:00,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:00,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:00,092 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:00,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30893890] [2023-11-19 07:47:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:00,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:00,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:00,094 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:00,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 07:47:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:00,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:47:00,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-19 07:47:00,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:00,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:00,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429209047] [2023-11-19 07:47:00,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:00,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30893890] [2023-11-19 07:47:00,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30893890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:00,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:00,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:00,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619474618] [2023-11-19 07:47:00,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:00,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:00,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:00,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:00,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:00,263 INFO L87 Difference]: Start difference. First operand 289 states and 387 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:47:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:00,588 INFO L93 Difference]: Finished difference Result 438 states and 576 transitions. [2023-11-19 07:47:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:00,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2023-11-19 07:47:00,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:00,592 INFO L225 Difference]: With dead ends: 438 [2023-11-19 07:47:00,592 INFO L226 Difference]: Without dead ends: 433 [2023-11-19 07:47:00,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:00,593 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 83 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:00,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 222 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:00,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-19 07:47:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 394. [2023-11-19 07:47:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 304 states have (on average 1.3782894736842106) internal successors, (419), 328 states have internal predecessors, (419), 63 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-19 07:47:00,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 545 transitions. [2023-11-19 07:47:00,657 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 545 transitions. Word has length 77 [2023-11-19 07:47:00,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:00,658 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 545 transitions. [2023-11-19 07:47:00,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:47:00,658 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 545 transitions. [2023-11-19 07:47:00,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:47:00,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:00,660 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:00,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:00,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:47:00,880 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:00,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:00,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1121698510, now seen corresponding path program 1 times [2023-11-19 07:47:00,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:00,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032505442] [2023-11-19 07:47:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:00,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:00,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:00,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960206799] [2023-11-19 07:47:00,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:00,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:00,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:00,903 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:00,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 07:47:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:00,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:47:00,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 07:47:01,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:01,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:01,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032505442] [2023-11-19 07:47:01,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:01,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960206799] [2023-11-19 07:47:01,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960206799] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:01,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:01,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-19 07:47:01,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991461825] [2023-11-19 07:47:01,243 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:01,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:01,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:01,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:01,245 INFO L87 Difference]: Start difference. First operand 394 states and 545 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:47:01,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:01,545 INFO L93 Difference]: Finished difference Result 405 states and 546 transitions. [2023-11-19 07:47:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:01,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2023-11-19 07:47:01,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:01,549 INFO L225 Difference]: With dead ends: 405 [2023-11-19 07:47:01,549 INFO L226 Difference]: Without dead ends: 402 [2023-11-19 07:47:01,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:01,551 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 96 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:01,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 237 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-19 07:47:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 391. [2023-11-19 07:47:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 304 states have (on average 1.355263157894737) internal successors, (412), 325 states have internal predecessors, (412), 63 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-19 07:47:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 538 transitions. [2023-11-19 07:47:01,604 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 538 transitions. Word has length 77 [2023-11-19 07:47:01,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:01,604 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 538 transitions. [2023-11-19 07:47:01,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:47:01,605 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 538 transitions. [2023-11-19 07:47:01,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:47:01,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:01,608 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:01,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:01,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:01,809 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:01,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:01,810 INFO L85 PathProgramCache]: Analyzing trace with hash -2137731730, now seen corresponding path program 1 times [2023-11-19 07:47:01,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:01,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429311959] [2023-11-19 07:47:01,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:01,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:01,831 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:01,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69513055] [2023-11-19 07:47:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:01,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:01,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:01,834 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:01,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 07:47:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:01,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:47:01,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 07:47:02,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 07:47:02,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429311959] [2023-11-19 07:47:02,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69513055] [2023-11-19 07:47:02,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69513055] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:02,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:02,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-19 07:47:02,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474128843] [2023-11-19 07:47:02,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:02,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:47:02,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:02,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:47:02,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:47:02,946 INFO L87 Difference]: Start difference. First operand 391 states and 538 transitions. Second operand has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2023-11-19 07:47:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:07,432 INFO L93 Difference]: Finished difference Result 424 states and 551 transitions. [2023-11-19 07:47:07,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:47:07,433 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) Word has length 78 [2023-11-19 07:47:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:07,436 INFO L225 Difference]: With dead ends: 424 [2023-11-19 07:47:07,436 INFO L226 Difference]: Without dead ends: 415 [2023-11-19 07:47:07,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2023-11-19 07:47:07,438 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 919 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:07,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 379 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-19 07:47:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-19 07:47:07,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 385. [2023-11-19 07:47:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 300 states have (on average 1.3066666666666666) internal successors, (392), 319 states have internal predecessors, (392), 63 states have call successors, (63), 2 states have call predecessors, (63), 2 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-19 07:47:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 518 transitions. [2023-11-19 07:47:07,506 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 518 transitions. Word has length 78 [2023-11-19 07:47:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:07,507 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 518 transitions. [2023-11-19 07:47:07,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 17 states have internal predecessors, (75), 9 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (18), 10 states have call predecessors, (18), 9 states have call successors, (18) [2023-11-19 07:47:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 518 transitions. [2023-11-19 07:47:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:47:07,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:07,509 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:07,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:07,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:07,728 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:07,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:07,729 INFO L85 PathProgramCache]: Analyzing trace with hash -412915364, now seen corresponding path program 1 times [2023-11-19 07:47:07,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:07,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64505782] [2023-11-19 07:47:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:07,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:07,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:07,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172588275] [2023-11-19 07:47:07,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:07,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:07,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:07,743 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:07,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 07:47:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:07,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:47:07,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 07:47:07,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:08,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:08,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64505782] [2023-11-19 07:47:08,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:08,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172588275] [2023-11-19 07:47:08,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172588275] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:08,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:08,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-19 07:47:08,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972460856] [2023-11-19 07:47:08,058 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:08,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:08,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:08,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:08,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:47:08,060 INFO L87 Difference]: Start difference. First operand 385 states and 518 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:47:08,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:08,368 INFO L93 Difference]: Finished difference Result 562 states and 758 transitions. [2023-11-19 07:47:08,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:08,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-11-19 07:47:08,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:08,373 INFO L225 Difference]: With dead ends: 562 [2023-11-19 07:47:08,373 INFO L226 Difference]: Without dead ends: 558 [2023-11-19 07:47:08,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:08,374 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 112 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:08,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 185 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:08,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-19 07:47:08,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 519. [2023-11-19 07:47:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 410 states have (on average 1.2951219512195122) internal successors, (531), 429 states have internal predecessors, (531), 87 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:47:08,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 705 transitions. [2023-11-19 07:47:08,453 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 705 transitions. Word has length 78 [2023-11-19 07:47:08,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:08,453 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 705 transitions. [2023-11-19 07:47:08,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-19 07:47:08,454 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 705 transitions. [2023-11-19 07:47:08,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 07:47:08,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:08,455 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:08,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:08,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:08,668 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:08,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:08,669 INFO L85 PathProgramCache]: Analyzing trace with hash -11934899, now seen corresponding path program 1 times [2023-11-19 07:47:08,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:08,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770244209] [2023-11-19 07:47:08,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:08,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:08,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:08,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857204153] [2023-11-19 07:47:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:08,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:08,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:08,681 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:08,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 07:47:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:08,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:08,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:47:08,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:47:08,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:08,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770244209] [2023-11-19 07:47:08,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:08,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857204153] [2023-11-19 07:47:08,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857204153] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:08,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:08,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 07:47:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467804891] [2023-11-19 07:47:08,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:08,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:08,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:08,995 INFO L87 Difference]: Start difference. First operand 519 states and 705 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 07:47:09,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:09,682 INFO L93 Difference]: Finished difference Result 819 states and 1129 transitions. [2023-11-19 07:47:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:09,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 98 [2023-11-19 07:47:09,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:09,697 INFO L225 Difference]: With dead ends: 819 [2023-11-19 07:47:09,697 INFO L226 Difference]: Without dead ends: 817 [2023-11-19 07:47:09,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:09,699 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 260 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:09,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 282 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:47:09,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2023-11-19 07:47:09,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 728. [2023-11-19 07:47:09,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 578 states have (on average 1.2958477508650519) internal successors, (749), 596 states have internal predecessors, (749), 129 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2023-11-19 07:47:09,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1007 transitions. [2023-11-19 07:47:09,823 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1007 transitions. Word has length 98 [2023-11-19 07:47:09,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:09,824 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1007 transitions. [2023-11-19 07:47:09,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 07:47:09,825 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1007 transitions. [2023-11-19 07:47:09,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-19 07:47:09,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:09,826 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:09,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:10,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:10,040 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:10,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:10,041 INFO L85 PathProgramCache]: Analyzing trace with hash -369981776, now seen corresponding path program 1 times [2023-11-19 07:47:10,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:10,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101046592] [2023-11-19 07:47:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:10,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:10,052 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:10,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495468527] [2023-11-19 07:47:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:10,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:10,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:10,055 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:10,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 07:47:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:10,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:10,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:47:10,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:47:10,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:10,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101046592] [2023-11-19 07:47:10,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:10,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495468527] [2023-11-19 07:47:10,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495468527] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:10,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:10,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 07:47:10,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442557485] [2023-11-19 07:47:10,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:10,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:10,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:10,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:10,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:10,344 INFO L87 Difference]: Start difference. First operand 728 states and 1007 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 07:47:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:10,785 INFO L93 Difference]: Finished difference Result 824 states and 1105 transitions. [2023-11-19 07:47:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:47:10,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 99 [2023-11-19 07:47:10,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:10,791 INFO L225 Difference]: With dead ends: 824 [2023-11-19 07:47:10,792 INFO L226 Difference]: Without dead ends: 822 [2023-11-19 07:47:10,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:10,793 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 179 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:10,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 335 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-11-19 07:47:10,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 733. [2023-11-19 07:47:10,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 584 states have (on average 1.2414383561643836) internal successors, (725), 601 states have internal predecessors, (725), 129 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2023-11-19 07:47:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 983 transitions. [2023-11-19 07:47:10,909 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 983 transitions. Word has length 99 [2023-11-19 07:47:10,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:10,909 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 983 transitions. [2023-11-19 07:47:10,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 7 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 07:47:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 983 transitions. [2023-11-19 07:47:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 07:47:10,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:10,912 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:10,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:11,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:11,134 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:11,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash 929801928, now seen corresponding path program 1 times [2023-11-19 07:47:11,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:11,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761602836] [2023-11-19 07:47:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:11,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:11,145 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:11,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346800650] [2023-11-19 07:47:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:11,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:11,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:11,147 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:11,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-19 07:47:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:11,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:47:11,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:47:11,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:11,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:11,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761602836] [2023-11-19 07:47:11,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:11,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346800650] [2023-11-19 07:47:11,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346800650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:11,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:11,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:11,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73920231] [2023-11-19 07:47:11,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:11,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:11,304 INFO L87 Difference]: Start difference. First operand 733 states and 983 transitions. Second operand has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-19 07:47:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:11,540 INFO L93 Difference]: Finished difference Result 736 states and 983 transitions. [2023-11-19 07:47:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:47:11,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2023-11-19 07:47:11,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:11,546 INFO L225 Difference]: With dead ends: 736 [2023-11-19 07:47:11,547 INFO L226 Difference]: Without dead ends: 735 [2023-11-19 07:47:11,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 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 07:47:11,549 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 19 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:11,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 212 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:11,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2023-11-19 07:47:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 732. [2023-11-19 07:47:11,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 584 states have (on average 1.2345890410958904) internal successors, (721), 600 states have internal predecessors, (721), 129 states have call successors, (129), 2 states have call predecessors, (129), 2 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2023-11-19 07:47:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 979 transitions. [2023-11-19 07:47:11,684 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 979 transitions. Word has length 101 [2023-11-19 07:47:11,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:11,688 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 979 transitions. [2023-11-19 07:47:11,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-19 07:47:11,689 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 979 transitions. [2023-11-19 07:47:11,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 07:47:11,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:11,690 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:11,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-19 07:47:11,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:11,904 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:11,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:11,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1485266356, now seen corresponding path program 1 times [2023-11-19 07:47:11,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:11,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480061601] [2023-11-19 07:47:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:11,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:11,920 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:11,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343569280] [2023-11-19 07:47:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:11,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:11,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:11,922 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:11,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-19 07:47:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:12,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:12,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:47:12,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-19 07:47:12,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:12,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480061601] [2023-11-19 07:47:12,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:12,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343569280] [2023-11-19 07:47:12,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343569280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:12,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:12,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-19 07:47:12,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747974824] [2023-11-19 07:47:12,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:12,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:12,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:12,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:12,322 INFO L87 Difference]: Start difference. First operand 732 states and 979 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2023-11-19 07:47:12,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:12,825 INFO L93 Difference]: Finished difference Result 958 states and 1247 transitions. [2023-11-19 07:47:12,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:47:12,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 104 [2023-11-19 07:47:12,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:12,833 INFO L225 Difference]: With dead ends: 958 [2023-11-19 07:47:12,834 INFO L226 Difference]: Without dead ends: 957 [2023-11-19 07:47:12,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:47:12,836 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 276 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:12,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 256 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2023-11-19 07:47:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 808. [2023-11-19 07:47:12,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 651 states have (on average 1.2319508448540706) internal successors, (802), 667 states have internal predecessors, (802), 138 states have call successors, (138), 2 states have call predecessors, (138), 2 states have return successors, (138), 138 states have call predecessors, (138), 138 states have call successors, (138) [2023-11-19 07:47:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1078 transitions. [2023-11-19 07:47:12,988 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1078 transitions. Word has length 104 [2023-11-19 07:47:12,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:12,988 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1078 transitions. [2023-11-19 07:47:12,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 8 states have internal predecessors, (91), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2023-11-19 07:47:12,989 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1078 transitions. [2023-11-19 07:47:12,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-19 07:47:12,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:12,991 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:13,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:13,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 07:47:13,200 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:13,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:13,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1569638871, now seen corresponding path program 1 times [2023-11-19 07:47:13,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:13,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916037797] [2023-11-19 07:47:13,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:13,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:13,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:13,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107369155] [2023-11-19 07:47:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:13,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:13,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:13,217 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:13,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-19 07:47:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:13,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:47:13,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-19 07:47:14,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:14,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:14,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916037797] [2023-11-19 07:47:14,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:14,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107369155] [2023-11-19 07:47:14,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107369155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:14,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:14,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:47:14,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899002760] [2023-11-19 07:47:14,216 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:14,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:47:14,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:14,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:47:14,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:47:14,217 INFO L87 Difference]: Start difference. First operand 808 states and 1078 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-19 07:47:15,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:15,236 INFO L93 Difference]: Finished difference Result 951 states and 1257 transitions. [2023-11-19 07:47:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:47:15,237 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 113 [2023-11-19 07:47:15,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:15,244 INFO L225 Difference]: With dead ends: 951 [2023-11-19 07:47:15,244 INFO L226 Difference]: Without dead ends: 948 [2023-11-19 07:47:15,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-11-19 07:47:15,246 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 218 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:15,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 465 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:47:15,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-11-19 07:47:15,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 915. [2023-11-19 07:47:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 737 states have (on average 1.2415196743554953) internal successors, (915), 753 states have internal predecessors, (915), 159 states have call successors, (159), 2 states have call predecessors, (159), 2 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2023-11-19 07:47:15,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1233 transitions. [2023-11-19 07:47:15,404 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1233 transitions. Word has length 113 [2023-11-19 07:47:15,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:15,405 INFO L495 AbstractCegarLoop]: Abstraction has 915 states and 1233 transitions. [2023-11-19 07:47:15,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-19 07:47:15,405 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1233 transitions. [2023-11-19 07:47:15,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-19 07:47:15,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:15,407 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:15,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:15,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:15,627 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:15,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:15,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1414164800, now seen corresponding path program 1 times [2023-11-19 07:47:15,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:15,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645366870] [2023-11-19 07:47:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:15,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:15,638 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:15,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648225155] [2023-11-19 07:47:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:15,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:15,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:15,640 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:15,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-19 07:47:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:15,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:47:15,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-19 07:47:16,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:16,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:16,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645366870] [2023-11-19 07:47:16,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:16,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648225155] [2023-11-19 07:47:16,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648225155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:16,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:16,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:47:16,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996233504] [2023-11-19 07:47:16,530 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:16,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:47:16,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:47:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:47:16,532 INFO L87 Difference]: Start difference. First operand 915 states and 1233 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-19 07:47:17,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:17,482 INFO L93 Difference]: Finished difference Result 952 states and 1255 transitions. [2023-11-19 07:47:17,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:47:17,483 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 114 [2023-11-19 07:47:17,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:17,488 INFO L225 Difference]: With dead ends: 952 [2023-11-19 07:47:17,489 INFO L226 Difference]: Without dead ends: 949 [2023-11-19 07:47:17,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2023-11-19 07:47:17,491 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 248 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:17,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 380 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:47:17,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-11-19 07:47:17,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 917. [2023-11-19 07:47:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 739 states have (on average 1.232746955345061) internal successors, (911), 755 states have internal predecessors, (911), 159 states have call successors, (159), 2 states have call predecessors, (159), 2 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2023-11-19 07:47:17,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1229 transitions. [2023-11-19 07:47:17,694 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1229 transitions. Word has length 114 [2023-11-19 07:47:17,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:17,695 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1229 transitions. [2023-11-19 07:47:17,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 7 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-19 07:47:17,695 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1229 transitions. [2023-11-19 07:47:17,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-19 07:47:17,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:17,697 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:17,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:17,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-19 07:47:17,917 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:17,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:17,918 INFO L85 PathProgramCache]: Analyzing trace with hash 889435897, now seen corresponding path program 1 times [2023-11-19 07:47:17,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:17,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193165186] [2023-11-19 07:47:17,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:17,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:17,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:17,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846391753] [2023-11-19 07:47:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:17,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:17,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:17,933 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:17,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-19 07:47:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:18,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:47:18,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-19 07:47:18,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:18,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:18,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193165186] [2023-11-19 07:47:18,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:18,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846391753] [2023-11-19 07:47:18,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846391753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:18,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:18,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:47:18,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345426725] [2023-11-19 07:47:18,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:18,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:47:18,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:18,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:47:18,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:18,148 INFO L87 Difference]: Start difference. First operand 917 states and 1229 transitions. Second operand has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-19 07:47:18,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:18,557 INFO L93 Difference]: Finished difference Result 950 states and 1253 transitions. [2023-11-19 07:47:18,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:47:18,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 115 [2023-11-19 07:47:18,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:18,565 INFO L225 Difference]: With dead ends: 950 [2023-11-19 07:47:18,565 INFO L226 Difference]: Without dead ends: 942 [2023-11-19 07:47:18,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:18,566 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 91 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:18,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 340 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:18,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-11-19 07:47:18,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 702. [2023-11-19 07:47:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 569 states have (on average 1.181019332161687) internal successors, (672), 580 states have internal predecessors, (672), 119 states have call successors, (119), 2 states have call predecessors, (119), 2 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-11-19 07:47:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 910 transitions. [2023-11-19 07:47:18,696 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 910 transitions. Word has length 115 [2023-11-19 07:47:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:18,696 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 910 transitions. [2023-11-19 07:47:18,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-19 07:47:18,697 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 910 transitions. [2023-11-19 07:47:18,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-19 07:47:18,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:18,699 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:18,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-19 07:47:18,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:18,912 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:18,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:18,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1802709090, now seen corresponding path program 1 times [2023-11-19 07:47:18,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:18,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657625884] [2023-11-19 07:47:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:18,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:18,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:18,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477797544] [2023-11-19 07:47:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:18,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:18,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:18,936 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:18,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-19 07:47:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:19,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:47:19,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-19 07:47:19,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-19 07:47:20,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:20,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657625884] [2023-11-19 07:47:20,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:20,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477797544] [2023-11-19 07:47:20,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477797544] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:20,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:47:20,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-11-19 07:47:20,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525092226] [2023-11-19 07:47:20,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:20,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-19 07:47:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:20,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-19 07:47:20,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:47:20,539 INFO L87 Difference]: Start difference. First operand 702 states and 910 transitions. Second operand has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 11 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (26), 12 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-19 07:47:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:28,928 INFO L93 Difference]: Finished difference Result 736 states and 933 transitions. [2023-11-19 07:47:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-19 07:47:28,929 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 11 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (26), 12 states have call predecessors, (26), 11 states have call successors, (26) Word has length 116 [2023-11-19 07:47:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:28,934 INFO L225 Difference]: With dead ends: 736 [2023-11-19 07:47:28,934 INFO L226 Difference]: Without dead ends: 735 [2023-11-19 07:47:28,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=870, Invalid=3036, Unknown=0, NotChecked=0, Total=3906 [2023-11-19 07:47:28,937 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 615 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:28,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 430 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 07:47:28,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2023-11-19 07:47:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 680. [2023-11-19 07:47:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 547 states have (on average 1.1809872029250457) internal successors, (646), 558 states have internal predecessors, (646), 119 states have call successors, (119), 2 states have call predecessors, (119), 2 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2023-11-19 07:47:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 884 transitions. [2023-11-19 07:47:29,069 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 884 transitions. Word has length 116 [2023-11-19 07:47:29,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:29,070 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 884 transitions. [2023-11-19 07:47:29,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 11 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (26), 12 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-19 07:47:29,070 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 884 transitions. [2023-11-19 07:47:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-19 07:47:29,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:29,072 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:29,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:29,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-19 07:47:29,288 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:29,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:29,289 INFO L85 PathProgramCache]: Analyzing trace with hash -767441840, now seen corresponding path program 2 times [2023-11-19 07:47:29,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:29,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595857223] [2023-11-19 07:47:29,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:29,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:29,298 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:29,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168353134] [2023-11-19 07:47:29,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:29,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:29,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:29,300 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:29,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-19 07:47:29,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:29,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:29,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 07:47:29,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-19 07:47:29,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:29,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:29,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595857223] [2023-11-19 07:47:29,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:29,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168353134] [2023-11-19 07:47:29,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168353134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:29,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:29,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:47:29,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052562462] [2023-11-19 07:47:29,955 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:29,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:47:29,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:29,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:47:29,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:47:29,957 INFO L87 Difference]: Start difference. First operand 680 states and 884 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 6 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-19 07:47:30,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:30,883 INFO L93 Difference]: Finished difference Result 1160 states and 1485 transitions. [2023-11-19 07:47:30,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:47:30,884 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 6 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 116 [2023-11-19 07:47:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:30,890 INFO L225 Difference]: With dead ends: 1160 [2023-11-19 07:47:30,890 INFO L226 Difference]: Without dead ends: 1156 [2023-11-19 07:47:30,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:47:30,892 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 411 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:30,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 472 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:47:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2023-11-19 07:47:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 854. [2023-11-19 07:47:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 693 states have (on average 1.1587301587301588) internal successors, (803), 704 states have internal predecessors, (803), 147 states have call successors, (147), 2 states have call predecessors, (147), 2 states have return successors, (147), 147 states have call predecessors, (147), 147 states have call successors, (147) [2023-11-19 07:47:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1097 transitions. [2023-11-19 07:47:31,144 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1097 transitions. Word has length 116 [2023-11-19 07:47:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:31,145 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1097 transitions. [2023-11-19 07:47:31,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 6 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-19 07:47:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1097 transitions. [2023-11-19 07:47:31,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-19 07:47:31,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:31,147 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:31,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-19 07:47:31,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:31,360 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:31,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:31,361 INFO L85 PathProgramCache]: Analyzing trace with hash -638119105, now seen corresponding path program 2 times [2023-11-19 07:47:31,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:31,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291478146] [2023-11-19 07:47:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:31,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:31,380 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:31,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707891110] [2023-11-19 07:47:31,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:31,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:31,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:31,382 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:31,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-19 07:47:31,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:31,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:31,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:31,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-19 07:47:31,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:31,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:31,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291478146] [2023-11-19 07:47:31,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:31,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707891110] [2023-11-19 07:47:31,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707891110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:31,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:31,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:47:31,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207627317] [2023-11-19 07:47:31,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:31,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:31,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:31,529 INFO L87 Difference]: Start difference. First operand 854 states and 1097 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-19 07:47:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:31,759 INFO L93 Difference]: Finished difference Result 1126 states and 1437 transitions. [2023-11-19 07:47:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:47:31,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2023-11-19 07:47:31,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:31,780 INFO L225 Difference]: With dead ends: 1126 [2023-11-19 07:47:31,780 INFO L226 Difference]: Without dead ends: 568 [2023-11-19 07:47:31,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:31,784 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 30 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:31,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 133 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:47:31,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-19 07:47:31,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 543. [2023-11-19 07:47:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 437 states have (on average 1.1533180778032037) internal successors, (504), 448 states have internal predecessors, (504), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-19 07:47:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 688 transitions. [2023-11-19 07:47:31,911 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 688 transitions. Word has length 123 [2023-11-19 07:47:31,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:31,911 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 688 transitions. [2023-11-19 07:47:31,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-19 07:47:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 688 transitions. [2023-11-19 07:47:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-19 07:47:31,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:31,914 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:31,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:32,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-19 07:47:32,128 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:32,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:32,129 INFO L85 PathProgramCache]: Analyzing trace with hash 470018659, now seen corresponding path program 2 times [2023-11-19 07:47:32,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:32,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703802042] [2023-11-19 07:47:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:32,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:32,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:32,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131304518] [2023-11-19 07:47:32,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:32,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:32,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:32,142 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:32,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-19 07:47:32,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:32,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:32,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:47:32,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-11-19 07:47:32,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:33,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:33,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703802042] [2023-11-19 07:47:33,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131304518] [2023-11-19 07:47:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131304518] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:33,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:33,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 07:47:33,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932861611] [2023-11-19 07:47:33,148 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:33,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:47:33,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:33,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:47:33,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:47:33,150 INFO L87 Difference]: Start difference. First operand 543 states and 688 transitions. Second operand has 13 states, 12 states have (on average 6.25) internal successors, (75), 13 states have internal predecessors, (75), 7 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-19 07:47:34,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:34,253 INFO L93 Difference]: Finished difference Result 633 states and 790 transitions. [2023-11-19 07:47:34,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:47:34,253 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.25) internal successors, (75), 13 states have internal predecessors, (75), 7 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) Word has length 151 [2023-11-19 07:47:34,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:34,258 INFO L225 Difference]: With dead ends: 633 [2023-11-19 07:47:34,258 INFO L226 Difference]: Without dead ends: 632 [2023-11-19 07:47:34,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2023-11-19 07:47:34,260 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 216 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:34,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 558 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:47:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-11-19 07:47:34,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 543. [2023-11-19 07:47:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 437 states have (on average 1.1510297482837528) internal successors, (503), 448 states have internal predecessors, (503), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-19 07:47:34,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 687 transitions. [2023-11-19 07:47:34,376 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 687 transitions. Word has length 151 [2023-11-19 07:47:34,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:34,377 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 687 transitions. [2023-11-19 07:47:34,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.25) internal successors, (75), 13 states have internal predecessors, (75), 7 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-19 07:47:34,383 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 687 transitions. [2023-11-19 07:47:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-19 07:47:34,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:34,385 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:34,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:34,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-19 07:47:34,599 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:34,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1685676596, now seen corresponding path program 2 times [2023-11-19 07:47:34,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:34,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449139298] [2023-11-19 07:47:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:34,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:34,612 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:34,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223236847] [2023-11-19 07:47:34,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:34,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:34,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:34,613 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:34,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-19 07:47:34,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:34,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:34,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 07:47:34,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-11-19 07:47:35,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:35,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:35,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449139298] [2023-11-19 07:47:35,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:35,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223236847] [2023-11-19 07:47:35,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223236847] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:35,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:35,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-19 07:47:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290160546] [2023-11-19 07:47:35,677 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:35,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:47:35,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:35,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:47:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:47:35,678 INFO L87 Difference]: Start difference. First operand 543 states and 687 transitions. Second operand has 14 states, 13 states have (on average 5.846153846153846) internal successors, (76), 14 states have internal predecessors, (76), 8 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-19 07:47:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:36,603 INFO L93 Difference]: Finished difference Result 632 states and 790 transitions. [2023-11-19 07:47:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:47:36,604 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.846153846153846) internal successors, (76), 14 states have internal predecessors, (76), 8 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) Word has length 152 [2023-11-19 07:47:36,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:36,608 INFO L225 Difference]: With dead ends: 632 [2023-11-19 07:47:36,608 INFO L226 Difference]: Without dead ends: 627 [2023-11-19 07:47:36,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2023-11-19 07:47:36,609 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 259 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:36,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 397 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:47:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2023-11-19 07:47:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 572. [2023-11-19 07:47:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 461 states have (on average 1.143167028199566) internal successors, (527), 472 states have internal predecessors, (527), 97 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-19 07:47:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 721 transitions. [2023-11-19 07:47:36,734 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 721 transitions. Word has length 152 [2023-11-19 07:47:36,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:36,734 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 721 transitions. [2023-11-19 07:47:36,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.846153846153846) internal successors, (76), 14 states have internal predecessors, (76), 8 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-19 07:47:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 721 transitions. [2023-11-19 07:47:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-19 07:47:36,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:36,737 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:36,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:36,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-19 07:47:36,957 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-11-19 07:47:36,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:36,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1837610940, now seen corresponding path program 3 times [2023-11-19 07:47:36,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:36,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805366872] [2023-11-19 07:47:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:36,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:36,971 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:36,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455219066] [2023-11-19 07:47:36,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:47:36,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:36,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:36,973 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:36,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9326c188-76a9-4ed3-b1cc-b6cee1bbfe52/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-19 07:47:37,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 07:47:37,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:37,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:47:37,037 INFO L285 TraceCheckSpWp]: Computing forward predicates...