./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound20.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_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/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_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/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_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/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 a32548a2dc110e6882a396485f8651f4c4262f9c106b055559dda4621561bdb6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:11,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:11,463 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:39:11,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:11,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:11,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:11,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:11,512 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:11,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:11,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:11,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:11,520 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:11,520 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:11,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:11,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:39:11,523 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:11,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:11,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:11,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:11,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:39:11,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:11,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:39:11,526 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:39:11,527 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:39:11,527 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:11,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:39:11,528 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:11,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:11,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:11,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:11,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:11,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:11,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:11,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:39:11,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:39:11,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:39:11,533 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:11,533 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:39:11,533 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:11,533 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:11,534 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:11,534 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_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a32548a2dc110e6882a396485f8651f4c4262f9c106b055559dda4621561bdb6 [2023-11-19 07:39:11,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:11,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:11,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:11,869 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:11,869 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:11,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound20.c [2023-11-19 07:39:14,907 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:15,090 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:15,091 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound20.c [2023-11-19 07:39:15,101 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/data/95e61436f/1e8e22995c0944759954d9ad5baac88c/FLAG3ae18b4f7 [2023-11-19 07:39:15,123 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/data/95e61436f/1e8e22995c0944759954d9ad5baac88c [2023-11-19 07:39:15,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:15,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:15,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:15,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:15,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:15,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30491c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15, skipping insertion in model container [2023-11-19 07:39:15,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,166 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:15,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:15,371 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:15,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:15,405 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:15,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15 WrapperNode [2023-11-19 07:39:15,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:15,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:15,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:15,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:15,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,437 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,460 INFO L138 Inliner]: procedures = 14, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-11-19 07:39:15,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:15,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:15,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:15,462 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:15,471 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,481 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:15,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:15,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:15,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:15,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15" (1/1) ... [2023-11-19 07:39:15,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:15,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:15,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:15,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:39:15,584 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:39:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:39:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:15,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:39:15,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:39:15,644 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:15,646 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:15,864 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:15,873 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:15,874 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:39:15,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:15 BoogieIcfgContainer [2023-11-19 07:39:15,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:15,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:15,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:15,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:15,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:15" (1/3) ... [2023-11-19 07:39:15,886 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742ee0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:15, skipping insertion in model container [2023-11-19 07:39:15,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:15" (2/3) ... [2023-11-19 07:39:15,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742ee0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:15, skipping insertion in model container [2023-11-19 07:39:15,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:15" (3/3) ... [2023-11-19 07:39:15,889 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound20.c [2023-11-19 07:39:15,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:15,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 07:39:15,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:15,975 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;@4033201a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:15,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 07:39:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 35 states have internal predecessors, (46), 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 07:39:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:39:15,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:15,992 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:15,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:15,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2022069469, now seen corresponding path program 1 times [2023-11-19 07:39:16,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:16,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42939856] [2023-11-19 07:39:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:16,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:39:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:39:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:39:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:39:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:16,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:16,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42939856] [2023-11-19 07:39:16,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42939856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:16,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:16,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:16,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642902118] [2023-11-19 07:39:16,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:16,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:39:16,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:16,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:39:16,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:39:16,324 INFO L87 Difference]: Start difference. First operand has 47 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 35 states have internal predecessors, (46), 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:39:16,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:16,354 INFO L93 Difference]: Finished difference Result 90 states and 132 transitions. [2023-11-19 07:39:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:39:16,357 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-11-19 07:39:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:16,365 INFO L225 Difference]: With dead ends: 90 [2023-11-19 07:39:16,366 INFO L226 Difference]: Without dead ends: 39 [2023-11-19 07:39:16,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 07:39:16,375 INFO L413 NwaCegarLoop]: 58 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, 58 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 07:39:16,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:39:16,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-19 07:39:16,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-19 07:39:16,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 29 states have internal predecessors, (34), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:39:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2023-11-19 07:39:16,436 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 25 [2023-11-19 07:39:16,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:16,437 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2023-11-19 07:39:16,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 07:39:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2023-11-19 07:39:16,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 07:39:16,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:16,442 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:16,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:39:16,444 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:16,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:16,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2112941475, now seen corresponding path program 1 times [2023-11-19 07:39:16,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:16,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688338648] [2023-11-19 07:39:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:16,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 07:39:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:39:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-19 07:39:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:39:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:16,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:16,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688338648] [2023-11-19 07:39:16,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688338648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:16,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:16,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:16,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133783873] [2023-11-19 07:39:16,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:16,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:16,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:16,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:16,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:16,760 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:39:16,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:16,854 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-11-19 07:39:16,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:39:16,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2023-11-19 07:39:16,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:16,857 INFO L225 Difference]: With dead ends: 45 [2023-11-19 07:39:16,857 INFO L226 Difference]: Without dead ends: 43 [2023-11-19 07:39:16,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 07:39:16,860 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:16,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 112 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:39:16,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-19 07:39:16,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-11-19 07:39:16,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 32 states have internal predecessors, (37), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:39:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-11-19 07:39:16,874 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 25 [2023-11-19 07:39:16,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:16,881 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-11-19 07:39:16,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:39:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-11-19 07:39:16,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 07:39:16,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:16,884 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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 07:39:16,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:39:16,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:16,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:16,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1804441474, now seen corresponding path program 1 times [2023-11-19 07:39:16,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:16,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956032415] [2023-11-19 07:39:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:16,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:16,925 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:16,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161932091] [2023-11-19 07:39:16,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:16,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:16,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:16,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:16,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:39:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:17,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:39:17,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:17,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:17,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:17,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956032415] [2023-11-19 07:39:17,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:17,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161932091] [2023-11-19 07:39:17,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161932091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:17,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:17,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:39:17,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052971718] [2023-11-19 07:39:17,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:17,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:39:17,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:17,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:39:17,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:17,160 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:39:17,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:17,237 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2023-11-19 07:39:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:39:17,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2023-11-19 07:39:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:17,240 INFO L225 Difference]: With dead ends: 51 [2023-11-19 07:39:17,240 INFO L226 Difference]: Without dead ends: 50 [2023-11-19 07:39:17,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:39:17,242 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:17,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 116 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:39:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-19 07:39:17,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2023-11-19 07:39:17,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:39:17,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2023-11-19 07:39:17,259 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 35 [2023-11-19 07:39:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:17,261 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2023-11-19 07:39:17,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:39:17,262 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2023-11-19 07:39:17,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 07:39:17,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:17,265 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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 07:39:17,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:17,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:17,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:17,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:17,482 INFO L85 PathProgramCache]: Analyzing trace with hash -103110780, now seen corresponding path program 1 times [2023-11-19 07:39:17,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:17,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353072295] [2023-11-19 07:39:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:17,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:17,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:17,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468257641] [2023-11-19 07:39:17,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:17,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:17,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:17,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:17,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:39:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:17,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:39:17,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:17,683 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:17,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:17,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353072295] [2023-11-19 07:39:17,689 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:17,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468257641] [2023-11-19 07:39:17,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468257641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:17,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:17,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:39:17,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040795018] [2023-11-19 07:39:17,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:17,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:39:17,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:17,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:39:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:17,699 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:39:17,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:17,833 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2023-11-19 07:39:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:39:17,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2023-11-19 07:39:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:17,838 INFO L225 Difference]: With dead ends: 54 [2023-11-19 07:39:17,838 INFO L226 Difference]: Without dead ends: 53 [2023-11-19 07:39:17,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:39:17,843 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 22 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:17,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 110 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:39:17,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-19 07:39:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2023-11-19 07:39:17,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 36 states have (on average 1.25) internal successors, (45), 40 states have internal predecessors, (45), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 07:39:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2023-11-19 07:39:17,875 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 36 [2023-11-19 07:39:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:17,876 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2023-11-19 07:39:17,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:39:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2023-11-19 07:39:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:39:17,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:17,880 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 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 07:39:17,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:18,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-19 07:39:18,095 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:18,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:18,096 INFO L85 PathProgramCache]: Analyzing trace with hash -871561341, now seen corresponding path program 1 times [2023-11-19 07:39:18,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:18,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761878161] [2023-11-19 07:39:18,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:18,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:18,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:18,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413216001] [2023-11-19 07:39:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:18,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:18,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:18,113 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:18,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:39:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:18,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:39:18,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:18,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:18,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:18,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761878161] [2023-11-19 07:39:18,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:18,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413216001] [2023-11-19 07:39:18,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413216001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:18,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:18,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:39:18,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502330058] [2023-11-19 07:39:18,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:18,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:39:18,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:39:18,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:39:18,299 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:39:18,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:18,377 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2023-11-19 07:39:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:39:18,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2023-11-19 07:39:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:18,384 INFO L225 Difference]: With dead ends: 101 [2023-11-19 07:39:18,388 INFO L226 Difference]: Without dead ends: 63 [2023-11-19 07:39:18,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:39:18,390 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:18,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 159 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:39:18,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-19 07:39:18,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-19 07:39:18,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.2) internal successors, (54), 49 states have internal predecessors, (54), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:39:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2023-11-19 07:39:18,405 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 39 [2023-11-19 07:39:18,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:18,405 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2023-11-19 07:39:18,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 07:39:18,406 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2023-11-19 07:39:18,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:39:18,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:18,408 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-19 07:39:18,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:18,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:18,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:18,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:18,628 INFO L85 PathProgramCache]: Analyzing trace with hash -948546387, now seen corresponding path program 1 times [2023-11-19 07:39:18,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:18,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370627366] [2023-11-19 07:39:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:18,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:18,665 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:18,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644877942] [2023-11-19 07:39:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:18,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:18,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:18,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:18,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:39:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:18,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:39:18,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:18,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:18,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:18,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370627366] [2023-11-19 07:39:18,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:18,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644877942] [2023-11-19 07:39:18,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644877942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:18,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:18,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:39:18,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417301412] [2023-11-19 07:39:18,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:18,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:39:18,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:18,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:39:18,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:39:18,878 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:39:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:19,014 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2023-11-19 07:39:19,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:39:19,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 45 [2023-11-19 07:39:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:19,016 INFO L225 Difference]: With dead ends: 63 [2023-11-19 07:39:19,016 INFO L226 Difference]: Without dead ends: 61 [2023-11-19 07:39:19,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:39:19,017 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 57 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:19,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 125 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:39:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-19 07:39:19,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-19 07:39:19,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 47 states have internal predecessors, (52), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 07:39:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2023-11-19 07:39:19,029 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 45 [2023-11-19 07:39:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:19,029 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2023-11-19 07:39:19,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:39:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2023-11-19 07:39:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 07:39:19,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:19,031 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-19 07:39:19,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:19,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:19,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:19,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:19,253 INFO L85 PathProgramCache]: Analyzing trace with hash 659833163, now seen corresponding path program 1 times [2023-11-19 07:39:19,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:19,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497098435] [2023-11-19 07:39:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:19,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:19,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:19,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132997804] [2023-11-19 07:39:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:19,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:19,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:19,278 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:19,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:39:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:19,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:39:19,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:19,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:39:19,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:19,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497098435] [2023-11-19 07:39:19,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:19,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132997804] [2023-11-19 07:39:19,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132997804] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:39:19,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:39:19,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-19 07:39:19,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497010218] [2023-11-19 07:39:19,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:19,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:39:19,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:19,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:39:19,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:39:19,502 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:39:19,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:19,617 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2023-11-19 07:39:19,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:39:19,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 46 [2023-11-19 07:39:19,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:19,619 INFO L225 Difference]: With dead ends: 76 [2023-11-19 07:39:19,619 INFO L226 Difference]: Without dead ends: 75 [2023-11-19 07:39:19,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:39:19,621 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 60 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:19,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 124 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:39:19,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-19 07:39:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2023-11-19 07:39:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 53 states have (on average 1.169811320754717) internal successors, (62), 55 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 07:39:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2023-11-19 07:39:19,632 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 46 [2023-11-19 07:39:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:19,633 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2023-11-19 07:39:19,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:39:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2023-11-19 07:39:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 07:39:19,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:19,635 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-19 07:39:19,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:19,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:19,852 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:19,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:19,853 INFO L85 PathProgramCache]: Analyzing trace with hash 659870899, now seen corresponding path program 1 times [2023-11-19 07:39:19,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:19,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318892721] [2023-11-19 07:39:19,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:19,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:19,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:19,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367368226] [2023-11-19 07:39:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:19,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:19,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:19,867 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:19,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:39:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:19,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:39:19,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:19,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:20,090 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:39:20,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:20,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318892721] [2023-11-19 07:39:20,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:20,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367368226] [2023-11-19 07:39:20,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367368226] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:20,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:20,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-19 07:39:20,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672871489] [2023-11-19 07:39:20,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:20,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:39:20,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:20,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:39:20,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:39:20,094 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-19 07:39:20,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:20,312 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2023-11-19 07:39:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:39:20,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 46 [2023-11-19 07:39:20,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:20,315 INFO L225 Difference]: With dead ends: 103 [2023-11-19 07:39:20,315 INFO L226 Difference]: Without dead ends: 102 [2023-11-19 07:39:20,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:39:20,318 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 89 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:20,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 174 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:39:20,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-19 07:39:20,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2023-11-19 07:39:20,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.1805555555555556) internal successors, (85), 74 states have internal predecessors, (85), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:39:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2023-11-19 07:39:20,349 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 46 [2023-11-19 07:39:20,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:20,349 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2023-11-19 07:39:20,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 5 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-19 07:39:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2023-11-19 07:39:20,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:39:20,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:20,353 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-19 07:39:20,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:20,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:20,568 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:20,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:20,568 INFO L85 PathProgramCache]: Analyzing trace with hash -174676804, now seen corresponding path program 1 times [2023-11-19 07:39:20,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:20,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372972609] [2023-11-19 07:39:20,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:20,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:20,580 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:20,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8932797] [2023-11-19 07:39:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:20,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:20,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:20,582 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:20,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:39:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:20,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:39:20,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:20,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:39:20,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:20,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372972609] [2023-11-19 07:39:20,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:20,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8932797] [2023-11-19 07:39:20,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8932797] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:39:20,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:39:20,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2023-11-19 07:39:20,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113446649] [2023-11-19 07:39:20,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:20,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:39:20,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:20,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:39:20,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:39:20,875 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:39:21,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:21,012 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2023-11-19 07:39:21,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:39:21,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 50 [2023-11-19 07:39:21,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:21,014 INFO L225 Difference]: With dead ends: 176 [2023-11-19 07:39:21,014 INFO L226 Difference]: Without dead ends: 107 [2023-11-19 07:39:21,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:39:21,016 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 31 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:21,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 172 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:39:21,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-19 07:39:21,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2023-11-19 07:39:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 80 states have (on average 1.175) internal successors, (94), 82 states have internal predecessors, (94), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:39:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 118 transitions. [2023-11-19 07:39:21,029 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 118 transitions. Word has length 50 [2023-11-19 07:39:21,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:21,030 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 118 transitions. [2023-11-19 07:39:21,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-19 07:39:21,030 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 118 transitions. [2023-11-19 07:39:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:39:21,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:21,031 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-19 07:39:21,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 07:39:21,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:21,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:21,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:21,253 INFO L85 PathProgramCache]: Analyzing trace with hash 314959588, now seen corresponding path program 1 times [2023-11-19 07:39:21,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:21,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175032113] [2023-11-19 07:39:21,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:21,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:21,264 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:21,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199004764] [2023-11-19 07:39:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:21,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:21,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:21,266 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:21,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:39:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:21,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:39:21,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:21,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 07:39:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175032113] [2023-11-19 07:39:21,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:21,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199004764] [2023-11-19 07:39:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199004764] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:21,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:21,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-19 07:39:21,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106795345] [2023-11-19 07:39:21,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:21,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:39:21,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:21,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:39:21,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:39:21,532 INFO L87 Difference]: Start difference. First operand 104 states and 118 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-19 07:39:21,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:21,743 INFO L93 Difference]: Finished difference Result 205 states and 234 transitions. [2023-11-19 07:39:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:39:21,743 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 50 [2023-11-19 07:39:21,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:21,745 INFO L225 Difference]: With dead ends: 205 [2023-11-19 07:39:21,746 INFO L226 Difference]: Without dead ends: 136 [2023-11-19 07:39:21,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:39:21,748 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 49 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:21,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 218 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:39:21,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-19 07:39:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128. [2023-11-19 07:39:21,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 100 states have (on average 1.16) internal successors, (116), 102 states have internal predecessors, (116), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:39:21,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 144 transitions. [2023-11-19 07:39:21,767 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 144 transitions. Word has length 50 [2023-11-19 07:39:21,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:21,768 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 144 transitions. [2023-11-19 07:39:21,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-19 07:39:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 144 transitions. [2023-11-19 07:39:21,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 07:39:21,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:21,770 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-19 07:39:21,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:21,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:21,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:21,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:21,989 INFO L85 PathProgramCache]: Analyzing trace with hash 623358272, now seen corresponding path program 1 times [2023-11-19 07:39:21,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:21,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127577484] [2023-11-19 07:39:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:21,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:22,006 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:22,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518637149] [2023-11-19 07:39:22,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:22,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:22,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:22,008 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:22,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:39:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:22,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:39:22,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:39:22,154 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:22,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127577484] [2023-11-19 07:39:22,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:22,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518637149] [2023-11-19 07:39:22,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518637149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:22,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:22,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:39:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054128618] [2023-11-19 07:39:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:22,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:22,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:22,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:22,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:22,157 INFO L87 Difference]: Start difference. First operand 128 states and 144 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 07:39:22,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:22,205 INFO L93 Difference]: Finished difference Result 226 states and 263 transitions. [2023-11-19 07:39:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:39:22,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 56 [2023-11-19 07:39:22,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:22,207 INFO L225 Difference]: With dead ends: 226 [2023-11-19 07:39:22,208 INFO L226 Difference]: Without dead ends: 157 [2023-11-19 07:39:22,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 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 07:39:22,209 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 24 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:22,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 121 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:39:22,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-19 07:39:22,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 146. [2023-11-19 07:39:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 115 states have (on average 1.1652173913043478) internal successors, (134), 117 states have internal predecessors, (134), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 07:39:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 168 transitions. [2023-11-19 07:39:22,227 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 168 transitions. Word has length 56 [2023-11-19 07:39:22,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:22,228 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 168 transitions. [2023-11-19 07:39:22,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 07:39:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 168 transitions. [2023-11-19 07:39:22,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 07:39:22,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:22,229 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-19 07:39:22,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:22,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:39:22,450 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:22,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:22,450 INFO L85 PathProgramCache]: Analyzing trace with hash 623459560, now seen corresponding path program 1 times [2023-11-19 07:39:22,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:22,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021795010] [2023-11-19 07:39:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:22,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:22,462 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:22,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352564690] [2023-11-19 07:39:22,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:22,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:22,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:22,464 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:22,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:39:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:22,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:39:22,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:22,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:39:22,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:22,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021795010] [2023-11-19 07:39:22,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:22,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352564690] [2023-11-19 07:39:22,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352564690] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:22,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:22,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-19 07:39:22,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324002009] [2023-11-19 07:39:22,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:22,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:39:22,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:22,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:39:22,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:39:22,758 INFO L87 Difference]: Start difference. First operand 146 states and 168 transitions. Second operand has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 7 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-19 07:39:23,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:23,135 INFO L93 Difference]: Finished difference Result 192 states and 223 transitions. [2023-11-19 07:39:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-19 07:39:23,136 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 7 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 56 [2023-11-19 07:39:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:23,138 INFO L225 Difference]: With dead ends: 192 [2023-11-19 07:39:23,138 INFO L226 Difference]: Without dead ends: 191 [2023-11-19 07:39:23,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2023-11-19 07:39:23,140 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 135 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:23,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 217 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:39:23,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-19 07:39:23,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 176. [2023-11-19 07:39:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 141 states have internal predecessors, (164), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 07:39:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 204 transitions. [2023-11-19 07:39:23,160 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 204 transitions. Word has length 56 [2023-11-19 07:39:23,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:23,161 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 204 transitions. [2023-11-19 07:39:23,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 7 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-19 07:39:23,161 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 204 transitions. [2023-11-19 07:39:23,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 07:39:23,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:23,163 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-19 07:39:23,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:23,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:39:23,378 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:23,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:23,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1021670951, now seen corresponding path program 1 times [2023-11-19 07:39:23,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:23,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519488925] [2023-11-19 07:39:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:23,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:23,401 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:23,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379894015] [2023-11-19 07:39:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:23,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:23,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:23,403 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:23,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:39:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:23,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:39:23,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:23,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:23,763 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:39:23,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:23,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519488925] [2023-11-19 07:39:23,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:23,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379894015] [2023-11-19 07:39:23,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379894015] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:23,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:23,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-19 07:39:23,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854458157] [2023-11-19 07:39:23,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:23,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:39:23,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:23,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:39:23,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:39:23,771 INFO L87 Difference]: Start difference. First operand 176 states and 204 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-19 07:39:24,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:24,100 INFO L93 Difference]: Finished difference Result 367 states and 427 transitions. [2023-11-19 07:39:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-19 07:39:24,101 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 60 [2023-11-19 07:39:24,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:24,103 INFO L225 Difference]: With dead ends: 367 [2023-11-19 07:39:24,103 INFO L226 Difference]: Without dead ends: 250 [2023-11-19 07:39:24,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2023-11-19 07:39:24,105 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 92 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:24,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 302 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:39:24,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-19 07:39:24,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 240. [2023-11-19 07:39:24,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 191 states have (on average 1.1465968586387434) internal successors, (219), 193 states have internal predecessors, (219), 26 states have call successors, (26), 20 states have call predecessors, (26), 20 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 07:39:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 271 transitions. [2023-11-19 07:39:24,132 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 271 transitions. Word has length 60 [2023-11-19 07:39:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:24,132 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 271 transitions. [2023-11-19 07:39:24,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 8 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-19 07:39:24,133 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 271 transitions. [2023-11-19 07:39:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 07:39:24,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:24,134 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2023-11-19 07:39:24,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:24,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:39:24,355 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:24,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:24,355 INFO L85 PathProgramCache]: Analyzing trace with hash 81686767, now seen corresponding path program 1 times [2023-11-19 07:39:24,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:24,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982239744] [2023-11-19 07:39:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:24,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:24,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:24,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252622676] [2023-11-19 07:39:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:24,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:24,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:24,368 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:24,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:39:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:24,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:39:24,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:24,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 07:39:24,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:24,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982239744] [2023-11-19 07:39:24,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:24,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252622676] [2023-11-19 07:39:24,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252622676] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:24,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:24,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-11-19 07:39:24,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718013612] [2023-11-19 07:39:24,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:24,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 07:39:24,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:24,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:39:24,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:39:24,719 INFO L87 Difference]: Start difference. First operand 240 states and 271 transitions. Second operand has 20 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 20 states have internal predecessors, (65), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 07:39:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:25,206 INFO L93 Difference]: Finished difference Result 304 states and 344 transitions. [2023-11-19 07:39:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-19 07:39:25,206 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 20 states have internal predecessors, (65), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 66 [2023-11-19 07:39:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:25,209 INFO L225 Difference]: With dead ends: 304 [2023-11-19 07:39:25,209 INFO L226 Difference]: Without dead ends: 302 [2023-11-19 07:39:25,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1236, Unknown=0, NotChecked=0, Total=1560 [2023-11-19 07:39:25,211 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 166 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:25,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 241 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:39:25,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-19 07:39:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 284. [2023-11-19 07:39:25,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 227 states have (on average 1.1497797356828194) internal successors, (261), 229 states have internal predecessors, (261), 30 states have call successors, (30), 24 states have call predecessors, (30), 24 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 07:39:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 321 transitions. [2023-11-19 07:39:25,241 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 321 transitions. Word has length 66 [2023-11-19 07:39:25,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:25,242 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 321 transitions. [2023-11-19 07:39:25,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 20 states have internal predecessors, (65), 9 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-19 07:39:25,242 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 321 transitions. [2023-11-19 07:39:25,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:39:25,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:25,244 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 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 07:39:25,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:25,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:39:25,465 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:25,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:25,465 INFO L85 PathProgramCache]: Analyzing trace with hash -203909190, now seen corresponding path program 1 times [2023-11-19 07:39:25,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:25,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519294418] [2023-11-19 07:39:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:25,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:25,481 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:25,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8244232] [2023-11-19 07:39:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:25,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:25,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:25,483 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:25,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:39:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:25,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:39:25,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 3 proven. 58 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:25,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 07:39:25,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:25,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519294418] [2023-11-19 07:39:25,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:25,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8244232] [2023-11-19 07:39:25,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8244232] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:25,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:25,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-19 07:39:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732430812] [2023-11-19 07:39:25,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:25,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 07:39:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:25,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:39:25,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:39:25,956 INFO L87 Difference]: Start difference. First operand 284 states and 321 transitions. Second operand has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-19 07:39:26,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:26,582 INFO L93 Difference]: Finished difference Result 352 states and 401 transitions. [2023-11-19 07:39:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-19 07:39:26,583 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) Word has length 76 [2023-11-19 07:39:26,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:26,587 INFO L225 Difference]: With dead ends: 352 [2023-11-19 07:39:26,587 INFO L226 Difference]: Without dead ends: 350 [2023-11-19 07:39:26,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=519, Invalid=1931, Unknown=0, NotChecked=0, Total=2450 [2023-11-19 07:39:26,591 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 169 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:26,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 315 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:39:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-19 07:39:26,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 291. [2023-11-19 07:39:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 232 states have (on average 1.1551724137931034) internal successors, (268), 234 states have internal predecessors, (268), 31 states have call successors, (31), 25 states have call predecessors, (31), 25 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-19 07:39:26,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 330 transitions. [2023-11-19 07:39:26,622 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 330 transitions. Word has length 76 [2023-11-19 07:39:26,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:26,623 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 330 transitions. [2023-11-19 07:39:26,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-19 07:39:26,623 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 330 transitions. [2023-11-19 07:39:26,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:39:26,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:26,624 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 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 07:39:26,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:26,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:39:26,844 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:26,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1563808378, now seen corresponding path program 1 times [2023-11-19 07:39:26,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:26,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869827807] [2023-11-19 07:39:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:26,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:26,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:26,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209603900] [2023-11-19 07:39:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:26,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:26,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:26,863 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:26,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:39:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:26,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:39:26,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:27,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 07:39:27,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:27,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869827807] [2023-11-19 07:39:27,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:27,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209603900] [2023-11-19 07:39:27,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209603900] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:27,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:27,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-19 07:39:27,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842348931] [2023-11-19 07:39:27,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:27,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 07:39:27,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:27,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:39:27,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:39:27,350 INFO L87 Difference]: Start difference. First operand 291 states and 330 transitions. Second operand has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-19 07:39:28,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:28,008 INFO L93 Difference]: Finished difference Result 406 states and 466 transitions. [2023-11-19 07:39:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-19 07:39:28,008 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) Word has length 76 [2023-11-19 07:39:28,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:28,012 INFO L225 Difference]: With dead ends: 406 [2023-11-19 07:39:28,012 INFO L226 Difference]: Without dead ends: 404 [2023-11-19 07:39:28,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=562, Invalid=2090, Unknown=0, NotChecked=0, Total=2652 [2023-11-19 07:39:28,015 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 166 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:28,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 327 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:39:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-19 07:39:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 374. [2023-11-19 07:39:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 299 states have (on average 1.173913043478261) internal successors, (351), 301 states have internal predecessors, (351), 39 states have call successors, (39), 33 states have call predecessors, (39), 33 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-19 07:39:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 429 transitions. [2023-11-19 07:39:28,060 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 429 transitions. Word has length 76 [2023-11-19 07:39:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:28,060 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 429 transitions. [2023-11-19 07:39:28,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.391304347826087) internal successors, (78), 24 states have internal predecessors, (78), 11 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-19 07:39:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 429 transitions. [2023-11-19 07:39:28,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:39:28,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:28,062 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 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] [2023-11-19 07:39:28,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-19 07:39:28,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:39:28,277 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:28,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:28,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1351222409, now seen corresponding path program 1 times [2023-11-19 07:39:28,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:28,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110146502] [2023-11-19 07:39:28,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:28,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:28,295 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:28,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727893969] [2023-11-19 07:39:28,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:28,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:28,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:28,297 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:28,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:39:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:28,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:39:28,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 3 proven. 62 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:28,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-19 07:39:28,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:28,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110146502] [2023-11-19 07:39:28,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:28,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727893969] [2023-11-19 07:39:28,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727893969] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:28,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:28,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-11-19 07:39:28,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752664743] [2023-11-19 07:39:28,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:28,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 07:39:28,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:28,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 07:39:28,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2023-11-19 07:39:28,815 INFO L87 Difference]: Start difference. First operand 374 states and 429 transitions. Second operand has 26 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-19 07:39:29,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:29,569 INFO L93 Difference]: Finished difference Result 798 states and 928 transitions. [2023-11-19 07:39:29,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-19 07:39:29,570 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) Word has length 80 [2023-11-19 07:39:29,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:29,573 INFO L225 Difference]: With dead ends: 798 [2023-11-19 07:39:29,574 INFO L226 Difference]: Without dead ends: 561 [2023-11-19 07:39:29,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=627, Invalid=2453, Unknown=0, NotChecked=0, Total=3080 [2023-11-19 07:39:29,577 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 151 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:29,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 380 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:39:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-11-19 07:39:29,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 498. [2023-11-19 07:39:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 399 states have (on average 1.1604010025062657) internal successors, (463), 401 states have internal predecessors, (463), 51 states have call successors, (51), 45 states have call predecessors, (51), 45 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-19 07:39:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 565 transitions. [2023-11-19 07:39:29,652 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 565 transitions. Word has length 80 [2023-11-19 07:39:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:29,653 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 565 transitions. [2023-11-19 07:39:29,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5) internal successors, (91), 26 states have internal predecessors, (91), 12 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2023-11-19 07:39:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 565 transitions. [2023-11-19 07:39:29,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-19 07:39:29,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:29,655 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-19 07:39:29,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:29,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:39:29,873 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:29,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:29,873 INFO L85 PathProgramCache]: Analyzing trace with hash 193365510, now seen corresponding path program 1 times [2023-11-19 07:39:29,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:29,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223289611] [2023-11-19 07:39:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:29,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:29,890 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:29,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803701393] [2023-11-19 07:39:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:29,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:29,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:29,893 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:29,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:39:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:29,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:39:29,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 3 proven. 126 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:30,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-19 07:39:30,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:30,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223289611] [2023-11-19 07:39:30,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:30,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803701393] [2023-11-19 07:39:30,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803701393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:30,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:30,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-11-19 07:39:30,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226368254] [2023-11-19 07:39:30,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:30,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-19 07:39:30,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:30,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-19 07:39:30,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2023-11-19 07:39:30,640 INFO L87 Difference]: Start difference. First operand 498 states and 565 transitions. Second operand has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 32 states have internal predecessors, (104), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-19 07:39:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:31,667 INFO L93 Difference]: Finished difference Result 653 states and 743 transitions. [2023-11-19 07:39:31,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-19 07:39:31,668 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 32 states have internal predecessors, (104), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) Word has length 96 [2023-11-19 07:39:31,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:31,673 INFO L225 Difference]: With dead ends: 653 [2023-11-19 07:39:31,674 INFO L226 Difference]: Without dead ends: 651 [2023-11-19 07:39:31,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1133 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=969, Invalid=3861, Unknown=0, NotChecked=0, Total=4830 [2023-11-19 07:39:31,678 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 241 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:31,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 341 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:39:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-11-19 07:39:31,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 467. [2023-11-19 07:39:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 374 states have (on average 1.1550802139037433) internal successors, (432), 377 states have internal predecessors, (432), 48 states have call successors, (48), 42 states have call predecessors, (48), 42 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-19 07:39:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 528 transitions. [2023-11-19 07:39:31,741 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 528 transitions. Word has length 96 [2023-11-19 07:39:31,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:31,742 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 528 transitions. [2023-11-19 07:39:31,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 32 states have internal predecessors, (104), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-19 07:39:31,743 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 528 transitions. [2023-11-19 07:39:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-19 07:39:31,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:31,746 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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 07:39:31,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:31,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:39:31,968 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:31,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:31,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1022957436, now seen corresponding path program 2 times [2023-11-19 07:39:31,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:31,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685166439] [2023-11-19 07:39:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:31,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:31,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:31,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689214333] [2023-11-19 07:39:31,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:39:31,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:31,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:31,982 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:31,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:39:32,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:39:32,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:39:32,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:39:32,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 3 proven. 144 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:32,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-19 07:39:32,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:32,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685166439] [2023-11-19 07:39:32,683 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:32,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689214333] [2023-11-19 07:39:32,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689214333] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:32,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:32,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2023-11-19 07:39:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549636226] [2023-11-19 07:39:32,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:32,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-19 07:39:32,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:32,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-19 07:39:32,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2023-11-19 07:39:32,691 INFO L87 Difference]: Start difference. First operand 467 states and 528 transitions. Second operand has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 32 states have internal predecessors, (104), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-19 07:39:33,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:33,691 INFO L93 Difference]: Finished difference Result 610 states and 695 transitions. [2023-11-19 07:39:33,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-19 07:39:33,692 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 32 states have internal predecessors, (104), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) Word has length 96 [2023-11-19 07:39:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:33,698 INFO L225 Difference]: With dead ends: 610 [2023-11-19 07:39:33,698 INFO L226 Difference]: Without dead ends: 607 [2023-11-19 07:39:33,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1011, Invalid=3819, Unknown=0, NotChecked=0, Total=4830 [2023-11-19 07:39:33,702 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 243 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:33,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 374 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:39:33,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2023-11-19 07:39:33,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 507. [2023-11-19 07:39:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 406 states have (on average 1.1625615763546797) internal successors, (472), 409 states have internal predecessors, (472), 52 states have call successors, (52), 46 states have call predecessors, (52), 46 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-19 07:39:33,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 576 transitions. [2023-11-19 07:39:33,751 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 576 transitions. Word has length 96 [2023-11-19 07:39:33,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:33,752 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 576 transitions. [2023-11-19 07:39:33,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 32 states have internal predecessors, (104), 15 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-19 07:39:33,752 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 576 transitions. [2023-11-19 07:39:33,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 07:39:33,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:33,755 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:33,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:33,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:33,969 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:33,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash 517027421, now seen corresponding path program 2 times [2023-11-19 07:39:33,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:33,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349675837] [2023-11-19 07:39:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:33,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:33,988 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:33,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468179290] [2023-11-19 07:39:33,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:39:33,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:33,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:33,990 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:34,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 07:39:34,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:39:34,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:39:34,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 07:39:34,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:34,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-19 07:39:34,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349675837] [2023-11-19 07:39:34,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468179290] [2023-11-19 07:39:34,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468179290] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:34,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:34,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 37 [2023-11-19 07:39:34,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359165179] [2023-11-19 07:39:34,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:34,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-19 07:39:34,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:34,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-19 07:39:34,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2023-11-19 07:39:34,814 INFO L87 Difference]: Start difference. First operand 507 states and 576 transitions. Second operand has 38 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 38 states have internal predecessors, (125), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-19 07:39:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:36,015 INFO L93 Difference]: Finished difference Result 1078 states and 1249 transitions. [2023-11-19 07:39:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-19 07:39:36,016 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 38 states have internal predecessors, (125), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) Word has length 106 [2023-11-19 07:39:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:36,021 INFO L225 Difference]: With dead ends: 1078 [2023-11-19 07:39:36,021 INFO L226 Difference]: Without dead ends: 822 [2023-11-19 07:39:36,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1679 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1395, Invalid=5411, Unknown=0, NotChecked=0, Total=6806 [2023-11-19 07:39:36,026 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 324 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:36,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 477 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:39:36,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-11-19 07:39:36,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 699. [2023-11-19 07:39:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 558 states have (on average 1.1756272401433692) internal successors, (656), 561 states have internal predecessors, (656), 72 states have call successors, (72), 66 states have call predecessors, (72), 66 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-19 07:39:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 800 transitions. [2023-11-19 07:39:36,095 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 800 transitions. Word has length 106 [2023-11-19 07:39:36,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:36,095 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 800 transitions. [2023-11-19 07:39:36,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 38 states have internal predecessors, (125), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-19 07:39:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 800 transitions. [2023-11-19 07:39:36,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:39:36,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:36,099 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2023-11-19 07:39:36,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:36,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:36,321 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:36,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:36,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1283472370, now seen corresponding path program 2 times [2023-11-19 07:39:36,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:36,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089629178] [2023-11-19 07:39:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:36,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:36,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:36,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [426155329] [2023-11-19 07:39:36,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:39:36,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:36,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:36,336 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:36,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 07:39:36,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:39:36,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:39:36,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-19 07:39:36,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 3 proven. 186 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:36,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 3 proven. 74 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-19 07:39:37,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:37,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089629178] [2023-11-19 07:39:37,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:37,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426155329] [2023-11-19 07:39:37,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426155329] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:37,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:37,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 38 [2023-11-19 07:39:37,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386051096] [2023-11-19 07:39:37,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:37,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-19 07:39:37,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:37,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-19 07:39:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2023-11-19 07:39:37,268 INFO L87 Difference]: Start difference. First operand 699 states and 800 transitions. Second operand has 38 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 38 states have internal predecessors, (130), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-19 07:39:38,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:38,553 INFO L93 Difference]: Finished difference Result 1372 states and 1591 transitions. [2023-11-19 07:39:38,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-11-19 07:39:38,554 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 38 states have internal predecessors, (130), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) Word has length 110 [2023-11-19 07:39:38,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:38,561 INFO L225 Difference]: With dead ends: 1372 [2023-11-19 07:39:38,561 INFO L226 Difference]: Without dead ends: 1086 [2023-11-19 07:39:38,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1445, Invalid=5695, Unknown=0, NotChecked=0, Total=7140 [2023-11-19 07:39:38,566 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 276 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:38,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 352 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:39:38,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2023-11-19 07:39:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 947. [2023-11-19 07:39:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 758 states have (on average 1.1569920844327177) internal successors, (877), 761 states have internal predecessors, (877), 96 states have call successors, (96), 90 states have call predecessors, (96), 90 states have return successors, (96), 95 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-19 07:39:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1069 transitions. [2023-11-19 07:39:38,660 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1069 transitions. Word has length 110 [2023-11-19 07:39:38,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:38,661 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 1069 transitions. [2023-11-19 07:39:38,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.4210526315789473) internal successors, (130), 38 states have internal predecessors, (130), 18 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (24), 18 states have call predecessors, (24), 18 states have call successors, (24) [2023-11-19 07:39:38,661 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1069 transitions. [2023-11-19 07:39:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-19 07:39:38,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:38,665 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 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] [2023-11-19 07:39:38,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:38,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:38,888 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:38,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash -26825272, now seen corresponding path program 2 times [2023-11-19 07:39:38,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:38,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601851012] [2023-11-19 07:39:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:38,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:38,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:38,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117188519] [2023-11-19 07:39:38,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:39:38,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:38,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:38,902 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:38,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 07:39:38,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:39:38,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:39:38,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 07:39:38,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:39,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-19 07:39:39,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:39,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601851012] [2023-11-19 07:39:39,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:39,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117188519] [2023-11-19 07:39:39,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117188519] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:39,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:39,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 41 [2023-11-19 07:39:39,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294664568] [2023-11-19 07:39:39,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:39,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-19 07:39:39,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:39,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-19 07:39:39,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1373, Unknown=0, NotChecked=0, Total=1722 [2023-11-19 07:39:39,898 INFO L87 Difference]: Start difference. First operand 947 states and 1069 transitions. Second operand has 42 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 42 states have internal predecessors, (138), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2023-11-19 07:39:41,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:41,261 INFO L93 Difference]: Finished difference Result 1451 states and 1636 transitions. [2023-11-19 07:39:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-19 07:39:41,264 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 42 states have internal predecessors, (138), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) Word has length 116 [2023-11-19 07:39:41,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:41,278 INFO L225 Difference]: With dead ends: 1451 [2023-11-19 07:39:41,278 INFO L226 Difference]: Without dead ends: 1448 [2023-11-19 07:39:41,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2150 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1706, Invalid=6850, Unknown=0, NotChecked=0, Total=8556 [2023-11-19 07:39:41,283 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 289 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:41,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 482 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:39:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2023-11-19 07:39:41,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1093. [2023-11-19 07:39:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 874 states have (on average 1.1590389016018308) internal successors, (1013), 877 states have internal predecessors, (1013), 111 states have call successors, (111), 105 states have call predecessors, (111), 105 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2023-11-19 07:39:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1235 transitions. [2023-11-19 07:39:41,403 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1235 transitions. Word has length 116 [2023-11-19 07:39:41,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:41,403 INFO L495 AbstractCegarLoop]: Abstraction has 1093 states and 1235 transitions. [2023-11-19 07:39:41,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 3.3658536585365852) internal successors, (138), 42 states have internal predecessors, (138), 20 states have call successors, (26), 11 states have call predecessors, (26), 11 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2023-11-19 07:39:41,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1235 transitions. [2023-11-19 07:39:41,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-19 07:39:41,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:41,408 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 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] [2023-11-19 07:39:41,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:41,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:41,625 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:41,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:41,625 INFO L85 PathProgramCache]: Analyzing trace with hash 481445039, now seen corresponding path program 3 times [2023-11-19 07:39:41,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:41,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618790193] [2023-11-19 07:39:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:41,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:41,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:41,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190267853] [2023-11-19 07:39:41,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:39:41,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:41,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:41,638 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:41,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 07:39:41,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 07:39:41,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:39:41,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:39:41,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-19 07:39:41,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:39:41,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:41,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618790193] [2023-11-19 07:39:41,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:41,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190267853] [2023-11-19 07:39:41,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190267853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:41,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:41,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:39:41,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131500567] [2023-11-19 07:39:41,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:41,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:39:41,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:41,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:39:41,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:39:41,739 INFO L87 Difference]: Start difference. First operand 1093 states and 1235 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (8), 2 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 07:39:41,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:41,885 INFO L93 Difference]: Finished difference Result 1117 states and 1259 transitions. [2023-11-19 07:39:41,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:39:41,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (8), 2 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 126 [2023-11-19 07:39:41,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:41,892 INFO L225 Difference]: With dead ends: 1117 [2023-11-19 07:39:41,893 INFO L226 Difference]: Without dead ends: 1116 [2023-11-19 07:39:41,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:39:41,894 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 23 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:41,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 116 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:39:41,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2023-11-19 07:39:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1055. [2023-11-19 07:39:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 846 states have (on average 1.1583924349881796) internal successors, (980), 849 states have internal predecessors, (980), 106 states have call successors, (106), 100 states have call predecessors, (106), 100 states have return successors, (106), 105 states have call predecessors, (106), 106 states have call successors, (106) [2023-11-19 07:39:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1192 transitions. [2023-11-19 07:39:42,023 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1192 transitions. Word has length 126 [2023-11-19 07:39:42,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:42,024 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1192 transitions. [2023-11-19 07:39:42,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (8), 2 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 07:39:42,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1192 transitions. [2023-11-19 07:39:42,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-19 07:39:42,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:42,029 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 8, 8, 8, 8, 4, 4, 4, 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 07:39:42,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:42,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-19 07:39:42,250 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:42,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash -853588316, now seen corresponding path program 2 times [2023-11-19 07:39:42,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:42,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138625947] [2023-11-19 07:39:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:42,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:42,263 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:42,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715483274] [2023-11-19 07:39:42,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:39:42,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:42,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:42,265 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:42,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 07:39:42,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:39:42,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:39:42,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 07:39:42,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 3 proven. 380 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:42,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 3 proven. 200 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-11-19 07:39:43,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:43,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138625947] [2023-11-19 07:39:43,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:43,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715483274] [2023-11-19 07:39:43,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715483274] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:43,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:43,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 44 [2023-11-19 07:39:43,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840369930] [2023-11-19 07:39:43,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:43,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-19 07:39:43,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:43,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-19 07:39:43,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=1462, Unknown=0, NotChecked=0, Total=1892 [2023-11-19 07:39:43,345 INFO L87 Difference]: Start difference. First operand 1055 states and 1192 transitions. Second operand has 44 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 20 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 20 states have call predecessors, (28), 20 states have call successors, (28) [2023-11-19 07:39:44,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:44,786 INFO L93 Difference]: Finished difference Result 1720 states and 1963 transitions. [2023-11-19 07:39:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-11-19 07:39:44,787 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 20 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 20 states have call predecessors, (28), 20 states have call successors, (28) Word has length 130 [2023-11-19 07:39:44,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:44,796 INFO L225 Difference]: With dead ends: 1720 [2023-11-19 07:39:44,798 INFO L226 Difference]: Without dead ends: 1470 [2023-11-19 07:39:44,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2058 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2056, Invalid=6500, Unknown=0, NotChecked=0, Total=8556 [2023-11-19 07:39:44,812 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 340 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:44,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 393 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:39:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-11-19 07:39:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1295. [2023-11-19 07:39:44,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1038 states have (on average 1.1454720616570329) internal successors, (1189), 1041 states have internal predecessors, (1189), 130 states have call successors, (130), 124 states have call predecessors, (130), 124 states have return successors, (130), 129 states have call predecessors, (130), 130 states have call successors, (130) [2023-11-19 07:39:44,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1449 transitions. [2023-11-19 07:39:44,971 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1449 transitions. Word has length 130 [2023-11-19 07:39:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:44,972 INFO L495 AbstractCegarLoop]: Abstraction has 1295 states and 1449 transitions. [2023-11-19 07:39:44,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 20 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 20 states have call predecessors, (28), 20 states have call successors, (28) [2023-11-19 07:39:44,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1449 transitions. [2023-11-19 07:39:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-19 07:39:44,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:44,977 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 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] [2023-11-19 07:39:45,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:45,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:45,193 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:45,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:45,194 INFO L85 PathProgramCache]: Analyzing trace with hash 54513096, now seen corresponding path program 3 times [2023-11-19 07:39:45,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:45,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596680438] [2023-11-19 07:39:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:45,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:45,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:45,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075654221] [2023-11-19 07:39:45,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:39:45,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:45,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:45,219 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:45,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 07:39:45,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 07:39:45,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:39:45,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:39:45,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:45,328 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 77 proven. 1 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-19 07:39:45,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-19 07:39:45,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:45,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596680438] [2023-11-19 07:39:45,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:45,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075654221] [2023-11-19 07:39:45,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075654221] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:45,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:45,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-19 07:39:45,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436794651] [2023-11-19 07:39:45,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:45,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:39:45,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:45,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:39:45,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:39:45,425 INFO L87 Difference]: Start difference. First operand 1295 states and 1449 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 3 states have call successors, (9), 2 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 07:39:45,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:45,655 INFO L93 Difference]: Finished difference Result 1340 states and 1499 transitions. [2023-11-19 07:39:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:39:45,658 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 3 states have call successors, (9), 2 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 130 [2023-11-19 07:39:45,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:45,666 INFO L225 Difference]: With dead ends: 1340 [2023-11-19 07:39:45,666 INFO L226 Difference]: Without dead ends: 1338 [2023-11-19 07:39:45,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:39:45,668 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 56 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:45,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 210 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:39:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2023-11-19 07:39:45,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 744. [2023-11-19 07:39:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 593 states have (on average 1.1332209106239461) internal successors, (672), 598 states have internal predecessors, (672), 77 states have call successors, (77), 71 states have call predecessors, (77), 71 states have return successors, (77), 74 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-19 07:39:45,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 826 transitions. [2023-11-19 07:39:45,790 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 826 transitions. Word has length 130 [2023-11-19 07:39:45,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:45,791 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 826 transitions. [2023-11-19 07:39:45,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 3 states have call successors, (9), 2 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 07:39:45,792 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 826 transitions. [2023-11-19 07:39:45,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-19 07:39:45,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:45,795 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:45,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-19 07:39:46,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:46,009 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:46,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1747613752, now seen corresponding path program 2 times [2023-11-19 07:39:46,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:46,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270070992] [2023-11-19 07:39:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:46,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:46,027 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:46,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209266256] [2023-11-19 07:39:46,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:39:46,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:46,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:46,029 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:46,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-19 07:39:46,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:39:46,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:39:46,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 07:39:46,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 744 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:46,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-11-19 07:39:47,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:47,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270070992] [2023-11-19 07:39:47,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:47,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209266256] [2023-11-19 07:39:47,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209266256] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:47,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:47,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29] total 57 [2023-11-19 07:39:47,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577125905] [2023-11-19 07:39:47,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:47,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-11-19 07:39:47,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:47,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-11-19 07:39:47,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=817, Invalid=2489, Unknown=0, NotChecked=0, Total=3306 [2023-11-19 07:39:47,657 INFO L87 Difference]: Start difference. First operand 744 states and 826 transitions. Second operand has 58 states, 57 states have (on average 3.3333333333333335) internal successors, (190), 58 states have internal predecessors, (190), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-19 07:39:49,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:49,831 INFO L93 Difference]: Finished difference Result 1153 states and 1311 transitions. [2023-11-19 07:39:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-11-19 07:39:49,831 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.3333333333333335) internal successors, (190), 58 states have internal predecessors, (190), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) Word has length 156 [2023-11-19 07:39:49,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:49,838 INFO L225 Difference]: With dead ends: 1153 [2023-11-19 07:39:49,839 INFO L226 Difference]: Without dead ends: 973 [2023-11-19 07:39:49,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2587 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3662, Invalid=8548, Unknown=0, NotChecked=0, Total=12210 [2023-11-19 07:39:49,842 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 575 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:49,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 434 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:39:49,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2023-11-19 07:39:49,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 897. [2023-11-19 07:39:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 716 states have (on average 1.1480446927374302) internal successors, (822), 721 states have internal predecessors, (822), 92 states have call successors, (92), 86 states have call predecessors, (92), 86 states have return successors, (92), 89 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-19 07:39:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1006 transitions. [2023-11-19 07:39:49,935 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1006 transitions. Word has length 156 [2023-11-19 07:39:49,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:49,935 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1006 transitions. [2023-11-19 07:39:49,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.3333333333333335) internal successors, (190), 58 states have internal predecessors, (190), 28 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 28 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-19 07:39:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1006 transitions. [2023-11-19 07:39:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-19 07:39:49,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:49,939 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 4, 4, 4, 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 07:39:49,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:50,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 07:39:50,153 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:50,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:50,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1058160385, now seen corresponding path program 1 times [2023-11-19 07:39:50,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:50,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238664421] [2023-11-19 07:39:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:50,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:50,165 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:50,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451352704] [2023-11-19 07:39:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:50,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:50,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:50,166 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:50,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-19 07:39:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:50,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 07:39:50,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:50,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 0 proven. 468 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-11-19 07:39:51,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:51,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238664421] [2023-11-19 07:39:51,696 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:51,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451352704] [2023-11-19 07:39:51,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451352704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:51,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:51,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2023-11-19 07:39:51,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287041151] [2023-11-19 07:39:51,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:51,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-11-19 07:39:51,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-11-19 07:39:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=837, Invalid=2703, Unknown=0, NotChecked=0, Total=3540 [2023-11-19 07:39:51,700 INFO L87 Difference]: Start difference. First operand 897 states and 1006 transitions. Second operand has 60 states, 59 states have (on average 3.305084745762712) internal successors, (195), 60 states have internal predecessors, (195), 29 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2023-11-19 07:39:54,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:54,622 INFO L93 Difference]: Finished difference Result 1217 states and 1392 transitions. [2023-11-19 07:39:54,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-11-19 07:39:54,623 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 3.305084745762712) internal successors, (195), 60 states have internal predecessors, (195), 29 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) Word has length 166 [2023-11-19 07:39:54,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:54,629 INFO L225 Difference]: With dead ends: 1217 [2023-11-19 07:39:54,630 INFO L226 Difference]: Without dead ends: 1215 [2023-11-19 07:39:54,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4685, Invalid=15337, Unknown=0, NotChecked=0, Total=20022 [2023-11-19 07:39:54,634 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 669 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:54,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 440 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:39:54,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-11-19 07:39:54,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 931. [2023-11-19 07:39:54,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 744 states have (on average 1.1518817204301075) internal successors, (857), 749 states have internal predecessors, (857), 95 states have call successors, (95), 89 states have call predecessors, (95), 89 states have return successors, (95), 92 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-19 07:39:54,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1047 transitions. [2023-11-19 07:39:54,768 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1047 transitions. Word has length 166 [2023-11-19 07:39:54,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:54,769 INFO L495 AbstractCegarLoop]: Abstraction has 931 states and 1047 transitions. [2023-11-19 07:39:54,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 3.305084745762712) internal successors, (195), 60 states have internal predecessors, (195), 29 states have call successors, (32), 15 states have call predecessors, (32), 15 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2023-11-19 07:39:54,769 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1047 transitions. [2023-11-19 07:39:54,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-19 07:39:54,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:54,773 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 12, 4, 4, 4, 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 07:39:54,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:54,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-19 07:39:54,988 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:54,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:54,989 INFO L85 PathProgramCache]: Analyzing trace with hash 574696048, now seen corresponding path program 1 times [2023-11-19 07:39:54,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:54,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73560092] [2023-11-19 07:39:54,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:54,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:55,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:55,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494337199] [2023-11-19 07:39:55,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:55,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:55,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:55,006 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:55,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-19 07:39:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:55,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-19 07:39:55,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 3 proven. 832 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:55,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:39:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 3 proven. 468 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-11-19 07:39:56,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:56,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73560092] [2023-11-19 07:39:56,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:39:56,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494337199] [2023-11-19 07:39:56,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494337199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:39:56,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:39:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32] total 44 [2023-11-19 07:39:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098050804] [2023-11-19 07:39:56,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:39:56,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-19 07:39:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:56,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-19 07:39:56,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=1462, Unknown=0, NotChecked=0, Total=1892 [2023-11-19 07:39:56,426 INFO L87 Difference]: Start difference. First operand 931 states and 1047 transitions. Second operand has 44 states, 44 states have (on average 3.840909090909091) internal successors, (169), 44 states have internal predecessors, (169), 20 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (36), 20 states have call predecessors, (36), 20 states have call successors, (36) [2023-11-19 07:39:58,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:39:58,001 INFO L93 Difference]: Finished difference Result 1419 states and 1617 transitions. [2023-11-19 07:39:58,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-11-19 07:39:58,009 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.840909090909091) internal successors, (169), 44 states have internal predecessors, (169), 20 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (36), 20 states have call predecessors, (36), 20 states have call successors, (36) Word has length 170 [2023-11-19 07:39:58,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:39:58,015 INFO L225 Difference]: With dead ends: 1419 [2023-11-19 07:39:58,015 INFO L226 Difference]: Without dead ends: 1076 [2023-11-19 07:39:58,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 278 SyntacticMatches, 18 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2676 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2300, Invalid=7800, Unknown=0, NotChecked=0, Total=10100 [2023-11-19 07:39:58,018 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 334 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:39:58,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 422 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:39:58,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2023-11-19 07:39:58,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 987. [2023-11-19 07:39:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 788 states have (on average 1.151015228426396) internal successors, (907), 793 states have internal predecessors, (907), 101 states have call successors, (101), 95 states have call predecessors, (101), 95 states have return successors, (101), 98 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-19 07:39:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1109 transitions. [2023-11-19 07:39:58,151 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1109 transitions. Word has length 170 [2023-11-19 07:39:58,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:39:58,153 INFO L495 AbstractCegarLoop]: Abstraction has 987 states and 1109 transitions. [2023-11-19 07:39:58,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.840909090909091) internal successors, (169), 44 states have internal predecessors, (169), 20 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (36), 20 states have call predecessors, (36), 20 states have call successors, (36) [2023-11-19 07:39:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1109 transitions. [2023-11-19 07:39:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-19 07:39:58,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:39:58,158 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 12, 12, 12, 11, 11, 11, 10, 4, 4, 4, 3, 3, 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] [2023-11-19 07:39:58,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:39:58,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-19 07:39:58,379 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:39:58,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:58,380 INFO L85 PathProgramCache]: Analyzing trace with hash -516556824, now seen corresponding path program 1 times [2023-11-19 07:39:58,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:58,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902897838] [2023-11-19 07:39:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:58,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:58,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:39:58,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962471090] [2023-11-19 07:39:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:58,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:39:58,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:58,397 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:39:58,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-19 07:39:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:58,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-19 07:39:58,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:39:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 14 proven. 806 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:39:59,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 14 proven. 386 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2023-11-19 07:40:00,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:00,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902897838] [2023-11-19 07:40:00,048 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:00,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962471090] [2023-11-19 07:40:00,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962471090] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:00,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:40:00,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34] total 45 [2023-11-19 07:40:00,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588046630] [2023-11-19 07:40:00,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:00,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-19 07:40:00,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:00,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-19 07:40:00,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=1574, Unknown=0, NotChecked=0, Total=1980 [2023-11-19 07:40:00,053 INFO L87 Difference]: Start difference. First operand 987 states and 1109 transitions. Second operand has 45 states, 45 states have (on average 4.088888888888889) internal successors, (184), 45 states have internal predecessors, (184), 20 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 20 states have call predecessors, (38), 20 states have call successors, (38) [2023-11-19 07:40:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:01,572 INFO L93 Difference]: Finished difference Result 1807 states and 2046 transitions. [2023-11-19 07:40:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-19 07:40:01,572 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.088888888888889) internal successors, (184), 45 states have internal predecessors, (184), 20 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 20 states have call predecessors, (38), 20 states have call successors, (38) Word has length 184 [2023-11-19 07:40:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:01,578 INFO L225 Difference]: With dead ends: 1807 [2023-11-19 07:40:01,578 INFO L226 Difference]: Without dead ends: 1464 [2023-11-19 07:40:01,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 302 SyntacticMatches, 21 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2380 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1898, Invalid=6658, Unknown=0, NotChecked=0, Total=8556 [2023-11-19 07:40:01,581 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 336 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:01,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 417 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:40:01,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2023-11-19 07:40:01,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1365. [2023-11-19 07:40:01,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1092 states have (on average 1.1382783882783882) internal successors, (1243), 1097 states have internal predecessors, (1243), 138 states have call successors, (138), 132 states have call predecessors, (138), 132 states have return successors, (138), 135 states have call predecessors, (138), 138 states have call successors, (138) [2023-11-19 07:40:01,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1519 transitions. [2023-11-19 07:40:01,728 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1519 transitions. Word has length 184 [2023-11-19 07:40:01,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:01,729 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1519 transitions. [2023-11-19 07:40:01,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.088888888888889) internal successors, (184), 45 states have internal predecessors, (184), 20 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 20 states have call predecessors, (38), 20 states have call successors, (38) [2023-11-19 07:40:01,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1519 transitions. [2023-11-19 07:40:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-19 07:40:01,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:01,734 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 12, 12, 12, 12, 12, 12, 10, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:01,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:01,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-19 07:40:01,957 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:40:01,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:01,958 INFO L85 PathProgramCache]: Analyzing trace with hash -711484546, now seen corresponding path program 1 times [2023-11-19 07:40:01,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:01,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605248882] [2023-11-19 07:40:01,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:01,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:01,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:01,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258558545] [2023-11-19 07:40:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:01,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:01,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:01,977 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:01,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-19 07:40:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:02,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-19 07:40:02,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 6 proven. 896 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:40:02,669 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 6 proven. 416 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-11-19 07:40:03,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:03,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605248882] [2023-11-19 07:40:03,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:03,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258558545] [2023-11-19 07:40:03,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258558545] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:03,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:40:03,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 36] total 48 [2023-11-19 07:40:03,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873368235] [2023-11-19 07:40:03,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:03,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-19 07:40:03,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:03,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-19 07:40:03,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1832, Unknown=0, NotChecked=0, Total=2256 [2023-11-19 07:40:03,521 INFO L87 Difference]: Start difference. First operand 1365 states and 1519 transitions. Second operand has 48 states, 48 states have (on average 4.0625) internal successors, (195), 48 states have internal predecessors, (195), 20 states have call successors, (40), 18 states have call predecessors, (40), 18 states have return successors, (40), 20 states have call predecessors, (40), 20 states have call successors, (40) [2023-11-19 07:40:05,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:05,423 INFO L93 Difference]: Finished difference Result 1979 states and 2216 transitions. [2023-11-19 07:40:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-11-19 07:40:05,424 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.0625) internal successors, (195), 48 states have internal predecessors, (195), 20 states have call successors, (40), 18 states have call predecessors, (40), 18 states have return successors, (40), 20 states have call predecessors, (40), 20 states have call successors, (40) Word has length 190 [2023-11-19 07:40:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:05,430 INFO L225 Difference]: With dead ends: 1979 [2023-11-19 07:40:05,430 INFO L226 Difference]: Without dead ends: 1636 [2023-11-19 07:40:05,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 310 SyntacticMatches, 22 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3520 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2307, Invalid=9683, Unknown=0, NotChecked=0, Total=11990 [2023-11-19 07:40:05,434 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 261 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:05,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 435 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:40:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-11-19 07:40:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1465. [2023-11-19 07:40:05,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1172 states have (on average 1.1373720136518772) internal successors, (1333), 1177 states have internal predecessors, (1333), 148 states have call successors, (148), 142 states have call predecessors, (148), 142 states have return successors, (148), 145 states have call predecessors, (148), 148 states have call successors, (148) [2023-11-19 07:40:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 1629 transitions. [2023-11-19 07:40:05,595 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 1629 transitions. Word has length 190 [2023-11-19 07:40:05,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:05,596 INFO L495 AbstractCegarLoop]: Abstraction has 1465 states and 1629 transitions. [2023-11-19 07:40:05,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.0625) internal successors, (195), 48 states have internal predecessors, (195), 20 states have call successors, (40), 18 states have call predecessors, (40), 18 states have return successors, (40), 20 states have call predecessors, (40), 20 states have call successors, (40) [2023-11-19 07:40:05,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 1629 transitions. [2023-11-19 07:40:05,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-19 07:40:05,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:05,601 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 13, 13, 13, 12, 4, 4, 4, 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] [2023-11-19 07:40:05,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:05,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:05,817 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 07:40:05,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:05,817 INFO L85 PathProgramCache]: Analyzing trace with hash 329539561, now seen corresponding path program 1 times [2023-11-19 07:40:05,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:05,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625376104] [2023-11-19 07:40:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:05,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:05,846 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:40:05,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328712728] [2023-11-19 07:40:05,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:05,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:05,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:05,848 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:05,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-19 07:40:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:05,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:40:05,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 460 proven. 0 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-11-19 07:40:06,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:06,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:06,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625376104] [2023-11-19 07:40:06,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:40:06,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328712728] [2023-11-19 07:40:06,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328712728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:06,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:06,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:06,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121294286] [2023-11-19 07:40:06,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:06,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:06,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:06,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:06,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:06,072 INFO L87 Difference]: Start difference. First operand 1465 states and 1629 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 07:40:06,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:06,267 INFO L93 Difference]: Finished difference Result 2175 states and 2457 transitions. [2023-11-19 07:40:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:06,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 194 [2023-11-19 07:40:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:06,277 INFO L225 Difference]: With dead ends: 2175 [2023-11-19 07:40:06,278 INFO L226 Difference]: Without dead ends: 1574 [2023-11-19 07:40:06,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 192 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 07:40:06,282 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 4 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:06,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 100 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2023-11-19 07:40:06,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1517. [2023-11-19 07:40:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1219 states have (on average 1.1369975389663658) internal successors, (1386), 1228 states have internal predecessors, (1386), 157 states have call successors, (157), 138 states have call predecessors, (157), 138 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-11-19 07:40:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 1700 transitions. [2023-11-19 07:40:06,507 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 1700 transitions. Word has length 194 [2023-11-19 07:40:06,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:06,508 INFO L495 AbstractCegarLoop]: Abstraction has 1517 states and 1700 transitions. [2023-11-19 07:40:06,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-19 07:40:06,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 1700 transitions. [2023-11-19 07:40:06,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-11-19 07:40:06,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:06,513 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 13, 13, 13, 12, 12, 12, 11, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2023-11-19 07:40:06,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff1b3719-7493-4079-8dcc-e7aa6c55c25b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0